diff --git a/ChangeLog b/ChangeLog
index bad297632c..1f0eb7c99a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
-Version 2.1.0 [unreleased]
+Version 2.1.0
 * stable release, optional update
+* Security improvements
+* Upgraded to new storage format
+* Ripple, Stellar, Cardano and NEM fixes
+* New coins: ATS, AXE, FLO, GIN, KMD, NIX,
+  PIVX, REOSC, XPM, XSN, ZCL
+* New ETH tokens
 
 Version 2.0.10
 * stable release, optional update
diff --git a/SConscript.bootloader b/SConscript.bootloader
index 1d79537653..ec0ba8462c 100644
--- a/SConscript.bootloader
+++ b/SConscript.bootloader
@@ -83,6 +83,7 @@ SOURCE_TREZORHAL = [
     'embed/trezorhal/image.c',
     'embed/trezorhal/flash.c',
     'embed/trezorhal/mini_printf.c',
+    'embed/trezorhal/mpu.c',
     'embed/trezorhal/rng.c',
     'embed/trezorhal/stm32.c',
     'embed/trezorhal/touch.c',
diff --git a/SConscript.firmware b/SConscript.firmware
index 7b66b6fa68..fcc9dee2f9 100644
--- a/SConscript.firmware
+++ b/SConscript.firmware
@@ -29,7 +29,6 @@ CPPDEFINES_MOD += [
     'AES_128',
     'AES_192',
     'RAND_PLATFORM_INDEPENDENT',
-    ('USE_BIP39_CACHE', '0'),
     ('USE_KECCAK', '1'),
     ('USE_ETHEREUM', '1'),
     ('USE_MONERO', '1'),
diff --git a/SConscript.unix b/SConscript.unix
index a6b23ea024..3ba197eaa6 100644
--- a/SConscript.unix
+++ b/SConscript.unix
@@ -27,7 +27,6 @@ CPPPATH_MOD += [
 CPPDEFINES_MOD += [
     'AES_128',
     'AES_192',
-    ('USE_BIP39_CACHE', '0'),
     ('USE_KECCAK', '1'),
     ('USE_ETHEREUM', '1'),
     ('USE_MONERO', '1'),
diff --git a/embed/boardloader/main.c b/embed/boardloader/main.c
index d5ff4a4993..34db7c35b1 100644
--- a/embed/boardloader/main.c
+++ b/embed/boardloader/main.c
@@ -105,9 +105,9 @@ static secbool copy_sdcard(void)
 
     // erase all flash (except boardloader)
     static const uint8_t sectors[] = {
-        3,
         FLASH_SECTOR_STORAGE_1,
         FLASH_SECTOR_STORAGE_2,
+        3,
         FLASH_SECTOR_BOOTLOADER,
         FLASH_SECTOR_FIRMWARE_START,
         7,
@@ -168,12 +168,8 @@ int main(void)
     periph_init();
 
     if (sectrue != flash_configure_option_bytes()) {
-        static const uint8_t sectors[] = {
-            FLASH_SECTOR_STORAGE_1,
-            FLASH_SECTOR_STORAGE_2,
-        };
         // display is not initialized so don't call ensure
-        secbool r = flash_erase_sectors(sectors, sizeof(sectors), NULL);
+        secbool r = flash_erase_sectors(STORAGE_SECTORS, STORAGE_SECTORS_COUNT, NULL);
         (void)r;
         return 2;
     }
diff --git a/embed/bootloader/main.c b/embed/bootloader/main.c
index 61fa8df1ca..26e3285a77 100644
--- a/embed/bootloader/main.c
+++ b/embed/bootloader/main.c
@@ -21,6 +21,7 @@
 #include <sys/types.h>
 
 #include "common.h"
+#include "mpu.h"
 #include "image.h"
 #include "flash.h"
 #include "display.h"
@@ -224,15 +225,18 @@ static void check_bootloader_version(void)
 
 int main(void)
 {
-main_start:
-    display_clear();
+    touch_init();
+    touch_power_on();
+
+    mpu_config_bootloader();
 
 #if PRODUCTION
     check_bootloader_version();
 #endif
 
-    touch_init();
-    touch_power_on();
+main_start:
+
+    display_clear();
 
     // delay to detect touch
     uint32_t touched = 0;
@@ -258,7 +262,7 @@ main_start:
         firmware_present = load_image_header((const uint8_t *)(FIRMWARE_START + vhdr.hdrlen), FIRMWARE_IMAGE_MAGIC, FIRMWARE_IMAGE_MAXSIZE, vhdr.vsig_m, vhdr.vsig_n, vhdr.vpub, &hdr);
     }
     if (sectrue == firmware_present) {
-        firmware_present = check_image_contents(&hdr, IMAGE_HEADER_SIZE + vhdr.hdrlen, firmware_sectors, FIRMWARE_SECTORS_COUNT);
+        firmware_present = check_image_contents(&hdr, IMAGE_HEADER_SIZE + vhdr.hdrlen, FIRMWARE_SECTORS, FIRMWARE_SECTORS_COUNT);
     }
 
     // start the bootloader if no or broken firmware found ...
@@ -282,11 +286,7 @@ main_start:
         ui_fadein();
 
         // erase storage
-        static const uint8_t sectors_storage[] = {
-            FLASH_SECTOR_STORAGE_1,
-            FLASH_SECTOR_STORAGE_2,
-        };
-        ensure(flash_erase_sectors(sectors_storage, sizeof(sectors_storage), NULL), NULL);
+        ensure(flash_erase_sectors(STORAGE_SECTORS, STORAGE_SECTORS_COUNT, NULL), NULL);
 
         // and start the usb loop
         if (bootloader_usb_loop(NULL, NULL) != sectrue) {
@@ -349,7 +349,7 @@ main_start:
         "invalid firmware header");
 
     ensure(
-        check_image_contents(&hdr, IMAGE_HEADER_SIZE + vhdr.hdrlen, firmware_sectors, FIRMWARE_SECTORS_COUNT),
+        check_image_contents(&hdr, IMAGE_HEADER_SIZE + vhdr.hdrlen, FIRMWARE_SECTORS, FIRMWARE_SECTORS_COUNT),
         "invalid firmware hash");
 
     // if all VTRUST flags are unset = ultimate trust => skip the procedure
@@ -379,9 +379,10 @@ main_start:
         ui_fadeout();
     }
 
-    // mpu_config();
+    // mpu_config_firmware();
     // jump_to_unprivileged(FIRMWARE_START + vhdr.hdrlen + IMAGE_HEADER_SIZE);
 
+    mpu_config_off();
     jump_to(FIRMWARE_START + vhdr.hdrlen + IMAGE_HEADER_SIZE);
 
     return 0;
diff --git a/embed/bootloader/messages.c b/embed/bootloader/messages.c
index 70cf066a19..faa0902811 100644
--- a/embed/bootloader/messages.c
+++ b/embed/bootloader/messages.c
@@ -39,22 +39,6 @@
 #define MSG_HEADER1_LEN 9
 #define MSG_HEADER2_LEN 1
 
-const uint8_t firmware_sectors[FIRMWARE_SECTORS_COUNT] = {
-    FLASH_SECTOR_FIRMWARE_START,
-    7,
-    8,
-    9,
-    10,
-    FLASH_SECTOR_FIRMWARE_END,
-    FLASH_SECTOR_FIRMWARE_EXTRA_START,
-    18,
-    19,
-    20,
-    21,
-    22,
-    FLASH_SECTOR_FIRMWARE_EXTRA_END,
-};
-
 secbool msg_parse_header(const uint8_t *buf, uint16_t *msg_id, uint32_t *msg_size)
 {
     if (buf[0] != '?' || buf[1] != '#' || buf[2] != '#') {
@@ -479,13 +463,9 @@ int process_msg_FirmwareUpload(uint8_t iface_num, uint32_t msg_size, uint8_t *bu
 
         // if firmware is not upgrade, erase storage
         if (sectrue != is_upgrade) {
-            static const uint8_t sectors_storage[] = {
-                FLASH_SECTOR_STORAGE_1,
-                FLASH_SECTOR_STORAGE_2,
-            };
-            ensure(flash_erase_sectors(sectors_storage, sizeof(sectors_storage), NULL), NULL);
+            ensure(flash_erase_sectors(STORAGE_SECTORS, STORAGE_SECTORS_COUNT, NULL), NULL);
         }
-        ensure(flash_erase_sectors(firmware_sectors, FIRMWARE_SECTORS_COUNT, ui_screen_install_progress_erase), NULL);
+        ensure(flash_erase_sectors(FIRMWARE_SECTORS, FIRMWARE_SECTORS_COUNT, ui_screen_install_progress_erase), NULL);
 
         firstskip = IMAGE_HEADER_SIZE + vhdr.hdrlen;
     }
@@ -521,7 +501,7 @@ int process_msg_FirmwareUpload(uint8_t iface_num, uint32_t msg_size, uint8_t *bu
 
     const uint32_t * const src = (const uint32_t * const)chunk_buffer;
     for (int i = 0; i < chunk_size / sizeof(uint32_t); i++) {
-        ensure(flash_write_word(firmware_sectors[firmware_block], i * sizeof(uint32_t), src[i]), NULL);
+        ensure(flash_write_word(FIRMWARE_SECTORS[firmware_block], i * sizeof(uint32_t), src[i]), NULL);
     }
 
     ensure(flash_lock_write(), NULL);
@@ -546,9 +526,9 @@ int process_msg_FirmwareUpload(uint8_t iface_num, uint32_t msg_size, uint8_t *bu
 int process_msg_WipeDevice(uint8_t iface_num, uint32_t msg_size, uint8_t *buf)
 {
     static const uint8_t sectors[] = {
-        3,
         FLASH_SECTOR_STORAGE_1,
         FLASH_SECTOR_STORAGE_2,
+        // 3,  // skip because of MPU protection 
         FLASH_SECTOR_FIRMWARE_START,
         7,
         8,
@@ -558,7 +538,7 @@ int process_msg_WipeDevice(uint8_t iface_num, uint32_t msg_size, uint8_t *buf)
         FLASH_SECTOR_UNUSED_START,
         13,
         14,
-        FLASH_SECTOR_UNUSED_END,
+        // FLASH_SECTOR_UNUSED_END,  // skip because of MPU protection 
         FLASH_SECTOR_FIRMWARE_EXTRA_START,
         18,
         19,
diff --git a/embed/bootloader/messages.h b/embed/bootloader/messages.h
index 1c0d514ee0..d509dd9e13 100644
--- a/embed/bootloader/messages.h
+++ b/embed/bootloader/messages.h
@@ -28,7 +28,6 @@
 #define USB_PACKET_SIZE   64
 
 #define FIRMWARE_UPLOAD_CHUNK_RETRY_COUNT 2
-extern const uint8_t firmware_sectors[FIRMWARE_SECTORS_COUNT];
 
 secbool msg_parse_header(const uint8_t *buf, uint16_t *msg_id, uint32_t *msg_size);
 
diff --git a/embed/extmod/modtrezorconfig/modtrezorconfig.c b/embed/extmod/modtrezorconfig/modtrezorconfig.c
index 5d84d655b2..6dbe13e5a9 100644
--- a/embed/extmod/modtrezorconfig/modtrezorconfig.c
+++ b/embed/extmod/modtrezorconfig/modtrezorconfig.c
@@ -17,6 +17,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <string.h>
+
 #include "py/runtime.h"
 #include "py/mphal.h"
 #include "py/objstr.h"
@@ -31,9 +33,13 @@
 
 STATIC mp_obj_t ui_wait_callback = mp_const_none;
 
-STATIC secbool wrapped_ui_wait_callback(uint32_t wait, uint32_t progress) {
+STATIC secbool wrapped_ui_wait_callback(uint32_t wait, uint32_t progress, const char* message) {
     if (mp_obj_is_callable(ui_wait_callback)) {
-        if (mp_call_function_2(ui_wait_callback, mp_obj_new_int(wait), mp_obj_new_int(progress)) == mp_const_true) {
+        mp_obj_t args[3];
+        args[0] = mp_obj_new_int(wait);
+        args[1] = mp_obj_new_int(progress);
+        args[2] = mp_obj_new_str(message, strlen(message));
+        if (mp_call_function_n_kw(ui_wait_callback, 3, 0, args) == mp_const_true) {
             return sectrue;
         }
     }
diff --git a/embed/firmware/bl_check.c b/embed/firmware/bl_check.c
index 6a967b53a3..65daf9b11f 100644
--- a/embed/firmware/bl_check.c
+++ b/embed/firmware/bl_check.c
@@ -38,6 +38,10 @@ static secbool known_bootloader(const uint8_t *hash, int len) {
     if (0 == memcmp(hash, "\x2e\xf7\x47\xf8\x49\x87\x1e\xc8\xc6\x01\x35\xd6\x32\xe5\x5a\xd1\x56\x18\xf8\x64\x87\xb7\xaa\x7c\x62\x0e\xc3\x0d\x25\x69\x4e\x18", 32)) return sectrue;
     // bootloader-2.0.2.bin (padded with 0xff)
     if (0 == memcmp(hash, "\xcc\x6b\x35\xc3\x8f\x29\x5c\xbd\x7d\x31\x69\xaf\xae\xf1\x61\x01\xef\xbe\x9f\x3b\x0a\xfd\xc5\x91\x70\x9b\xf5\xa0\xd5\xa4\xc5\xe0", 32)) return sectrue;
+    // bootloader-2.0.3.bin (padded with 0x00)
+    if (0 == memcmp(hash, "\xb1\x83\xd3\x31\xc7\xff\x3d\xcf\x54\x1e\x7e\x40\xf4\x9e\xc3\x53\x4c\xcc\xf3\x8c\x35\x39\x88\x81\x65\xc0\x5c\x25\xbd\xfc\xea\x14", 32)) return sectrue;
+    // bootloader-2.0.3.bin (padded with 0xff)
+    if (0 == memcmp(hash, "\xab\xdb\x7d\xe2\xef\x44\x66\xa7\xb7\x1f\x2b\x02\xf3\xe1\x40\xe7\xcd\xf2\x8e\xc0\xbb\x33\x04\xce\x0d\xa5\xca\x02\x57\xb6\xd4\x30", 32)) return sectrue;
     return secfalse;
 }
 */
@@ -45,9 +49,9 @@ static secbool known_bootloader(const uint8_t *hash, int len) {
 static secbool latest_bootloader(const uint8_t *hash, int len) {
     if (len != 32) return secfalse;
     // bootloader.bin (padded with 0x00)
-    if (0 == memcmp(hash, "\x2e\xf7\x47\xf8\x49\x87\x1e\xc8\xc6\x01\x35\xd6\x32\xe5\x5a\xd1\x56\x18\xf8\x64\x87\xb7\xaa\x7c\x62\x0e\xc3\x0d\x25\x69\x4e\x18", 32)) return sectrue;
+    if (0 == memcmp(hash, "\xb1\x83\xd3\x31\xc7\xff\x3d\xcf\x54\x1e\x7e\x40\xf4\x9e\xc3\x53\x4c\xcc\xf3\x8c\x35\x39\x88\x81\x65\xc0\x5c\x25\xbd\xfc\xea\x14", 32)) return sectrue;
     // bootloader.bin (padded with 0xff)
-    if (0 == memcmp(hash, "\xcc\x6b\x35\xc3\x8f\x29\x5c\xbd\x7d\x31\x69\xaf\xae\xf1\x61\x01\xef\xbe\x9f\x3b\x0a\xfd\xc5\x91\x70\x9b\xf5\xa0\xd5\xa4\xc5\xe0", 32)) return sectrue;
+    if (0 == memcmp(hash, "\xab\xdb\x7d\xe2\xef\x44\x66\xa7\xb7\x1f\x2b\x02\xf3\xe1\x40\xe7\xcd\xf2\x8e\xc0\xbb\x33\x04\xce\x0d\xa5\xca\x02\x57\xb6\xd4\x30", 32)) return sectrue;
     return secfalse;
 }
 
diff --git a/embed/firmware/bootloader.bin b/embed/firmware/bootloader.bin
index 4f34cb118c..aebb4eb720 100644
Binary files a/embed/firmware/bootloader.bin and b/embed/firmware/bootloader.bin differ
diff --git a/embed/firmware/main.c b/embed/firmware/main.c
index 5d517fcc01..e0b5f2cafd 100644
--- a/embed/firmware/main.c
+++ b/embed/firmware/main.c
@@ -54,7 +54,7 @@ int main(void)
 #if TREZOR_MODEL == T
     check_and_replace_bootloader();
     // Enable MPU
-    mpu_config();
+    mpu_config_firmware();
 #endif
 
     // Init peripherals
diff --git a/embed/trezorhal/common.c b/embed/trezorhal/common.c
index c3afd92619..d0dc28f8d6 100644
--- a/embed/trezorhal/common.c
+++ b/embed/trezorhal/common.c
@@ -29,7 +29,8 @@
 
 #include "stm32f4xx_ll_utils.h"
 
-void shutdown(void);
+// from util.s
+extern void shutdown(void);
 
 #define COLOR_FATAL_ERROR RGB16(0x7F, 0x00, 0x00)
 
@@ -115,6 +116,24 @@ void hal_delay(uint32_t ms)
     HAL_Delay(ms);
 }
 
+void delay_random(void)
+{
+    int wait = rng_get() & 0xff;
+    volatile int i = 0;
+    volatile int j = wait;
+    while (i < wait) {
+        if (i + j != wait) {
+            shutdown();
+        }
+        ++i;
+        --j;
+    }
+    // Double-check loop completion.
+    if (i != wait || j != 0) {
+        shutdown();
+    }
+}
+
 // reference RM0090 section 35.12.1 Figure 413
 #define USB_OTG_HS_DATA_FIFO_RAM  (USB_OTG_HS_PERIPH_BASE + 0x20000U)
 #define USB_OTG_HS_DATA_FIFO_SIZE (4096U)
diff --git a/embed/trezorhal/common.h b/embed/trezorhal/common.h
index f886739e0e..3fac1dec62 100644
--- a/embed/trezorhal/common.h
+++ b/embed/trezorhal/common.h
@@ -26,11 +26,14 @@
 #define XSTR(s) STR(s)
 #define STR(s) #s
 
+#ifndef MIN_8bits
+#define MIN_8bits(a, b) ({ typeof(a) _a = (a); typeof(b) _b = (b); _a < _b ? (_a & 0xFF) : (_b & 0xFF); })
+#endif
 #ifndef MIN
-#define MIN(a, b) (((a) < (b)) ? (a) : (b))
+#define MIN(a, b) ({ typeof(a) _a = (a); typeof(b) _b = (b); _a < _b ? _a : _b; })
 #endif
 #ifndef MAX
-#define MAX(a, b) (((a) > (b)) ? (a) : (b))
+#define MAX(a, b) ({ typeof(a) _a = (a); typeof(b) _b = (b); _a > _b ? _a : _b; })
 #endif
 
 void __attribute__((noreturn)) __fatal_error(const char *expr, const char *msg, const char *file, int line, const char *func);
@@ -40,6 +43,8 @@ void __attribute__((noreturn)) error_shutdown(const char *line1, const char *lin
 
 void hal_delay(uint32_t ms);
 
+void delay_random(void);
+
 void clear_otg_hs_memory(void);
 
 extern uint32_t __stack_chk_guard;
diff --git a/embed/trezorhal/flash.c b/embed/trezorhal/flash.c
index b270b7cc56..b91c2c8f96 100644
--- a/embed/trezorhal/flash.c
+++ b/embed/trezorhal/flash.c
@@ -54,6 +54,27 @@ static const uint32_t FLASH_SECTOR_TABLE[FLASH_SECTOR_COUNT + 1] = {
     [24] = 0x08200000, // last element - not a valid sector
 };
 
+const uint8_t FIRMWARE_SECTORS [FIRMWARE_SECTORS_COUNT] = {
+    FLASH_SECTOR_FIRMWARE_START,
+    7,
+    8,
+    9,
+    10,
+    FLASH_SECTOR_FIRMWARE_END,
+    FLASH_SECTOR_FIRMWARE_EXTRA_START,
+    18,
+    19,
+    20,
+    21,
+    22,
+    FLASH_SECTOR_FIRMWARE_EXTRA_END,
+};
+
+const uint8_t STORAGE_SECTORS[STORAGE_SECTORS_COUNT] = {
+    FLASH_SECTOR_STORAGE_1,
+    FLASH_SECTOR_STORAGE_2,
+};
+
 void flash_init(void)
 {
 }
diff --git a/embed/trezorhal/flash.h b/embed/trezorhal/flash.h
index dd707cf90f..285a1e76fc 100644
--- a/embed/trezorhal/flash.h
+++ b/embed/trezorhal/flash.h
@@ -60,6 +60,13 @@
 //                                          22
 #define FLASH_SECTOR_FIRMWARE_EXTRA_END     23
 
+#define BOOTLOADER_SECTORS_COUNT            (1)
+#define STORAGE_SECTORS_COUNT               (2)
+#define FIRMWARE_SECTORS_COUNT              (6 + 7)
+
+extern const uint8_t STORAGE_SECTORS[STORAGE_SECTORS_COUNT];
+extern const uint8_t FIRMWARE_SECTORS[FIRMWARE_SECTORS_COUNT];
+
 // note: FLASH_SR_RDERR is STM32F42xxx and STM32F43xxx specific (STM32F427) (reference RM0090 section 3.7.5)
 #ifndef STM32F427xx
 #define FLASH_SR_RDERR 0
diff --git a/embed/trezorhal/image.h b/embed/trezorhal/image.h
index c9153bf97f..7eef845317 100644
--- a/embed/trezorhal/image.h
+++ b/embed/trezorhal/image.h
@@ -27,9 +27,6 @@
 #define BOOTLOADER_START   0x08020000
 #define FIRMWARE_START     0x08040000
 
-#define BOOTLOADER_SECTORS_COUNT    (1)
-#define FIRMWARE_SECTORS_COUNT      (6 + 7)
-
 #define IMAGE_HEADER_SIZE  0x400
 #define IMAGE_SIG_SIZE     65
 #define IMAGE_CHUNK_SIZE   (128 * 1024)
diff --git a/embed/trezorhal/mpu.c b/embed/trezorhal/mpu.c
index 17fc68cc2d..03effbb851 100644
--- a/embed/trezorhal/mpu.c
+++ b/embed/trezorhal/mpu.c
@@ -27,48 +27,49 @@
 
 #define MPU_SUBREGION_DISABLE(X) ((X) << MPU_RASR_SRD_Pos)
 
-void mpu_config(void)
+void mpu_config_off(void)
+{
+    // Disable MPU
+    HAL_MPU_Disable();
+}
+
+void mpu_config_bootloader(void)
 {
     // Disable MPU
     HAL_MPU_Disable();
 
-/*
-    // Boardloader (0x08000000 - 0x0800FFFF, 64 KiB, read-only, execute never)
-    MPU->RBAR = FLASH_BASE | MPU_RBAR_VALID_Msk | MPU_REGION_NUMBER0;
-    MPU->RASR = MPU_RASR_ENABLE_Msk | MPU_RASR_ATTR_FLASH | LL_MPU_REGION_SIZE_64KB | LL_MPU_REGION_PRIV_RO_URO | MPU_RASR_XN_Msk;
-*/
+    // Note: later entries overwrite previous ones
 
-    // Bootloader (0x08020000 - 0x0803FFFF, 64 KiB, read-only)
-    MPU->RBAR = FLASH_BASE | 0x20000 | MPU_RBAR_VALID_Msk | MPU_REGION_NUMBER0;
-    MPU->RASR = MPU_RASR_ENABLE_Msk | MPU_RASR_ATTR_FLASH | LL_MPU_REGION_SIZE_64KB | LL_MPU_REGION_PRIV_RO_URO;
+    // Everything (0x00000000 - 0xFFFFFFFF, 4 GiB, read-write)
+    MPU->RNR = MPU_REGION_NUMBER0;
+    MPU->RBAR = 0;
+    MPU->RASR = MPU_RASR_ENABLE_Msk | MPU_RASR_ATTR_FLASH | LL_MPU_REGION_SIZE_4GB | LL_MPU_REGION_FULL_ACCESS;
 
-    // Storage#1 (0x08010000 - 0x0801FFFF, 64 KiB, read-write, execute never)
-    MPU->RBAR = FLASH_BASE | 0x10000 | MPU_RBAR_VALID_Msk | MPU_REGION_NUMBER1;
-    MPU->RASR = MPU_RASR_ENABLE_Msk | MPU_RASR_ATTR_FLASH | LL_MPU_REGION_SIZE_64KB | LL_MPU_REGION_FULL_ACCESS | MPU_RASR_XN_Msk;
-    // Storage#2 (0x08110000 - 0x0811FFFF, 64 KiB, read-write, execute never)
-    MPU->RBAR = FLASH_BASE | 0x110000 | MPU_RBAR_VALID_Msk | MPU_REGION_NUMBER2;
-    MPU->RASR = MPU_RASR_ENABLE_Msk | MPU_RASR_ATTR_FLASH | LL_MPU_REGION_SIZE_64KB | LL_MPU_REGION_FULL_ACCESS | MPU_RASR_XN_Msk;
+    // Flash (0x0800C000 - 0x0800FFFF, 16 KiB, no access)
+    MPU->RNR = MPU_REGION_NUMBER1;
+    MPU->RBAR = FLASH_BASE + 0xC000;
+    MPU->RASR = MPU_RASR_ENABLE_Msk | MPU_RASR_ATTR_FLASH | LL_MPU_REGION_SIZE_16KB | LL_MPU_REGION_NO_ACCESS;
 
-    // Firmware (0x08040000 - 0x080FFFFF, 6 * 128 KiB = 1024 KiB except 2/8 at start = 768 KiB, read-only)
-    MPU->RBAR = FLASH_BASE | MPU_RBAR_VALID_Msk | MPU_REGION_NUMBER3;
-    MPU->RASR = MPU_RASR_ENABLE_Msk | MPU_RASR_ATTR_FLASH | LL_MPU_REGION_SIZE_1MB | LL_MPU_REGION_PRIV_RO_URO | MPU_SUBREGION_DISABLE(0x03);
-
-    // Firmware extra (0x08120000 - 0x081FFFFF, 7 * 128 KiB = 1024 KiB except 1/8 at start = 896 KiB, read-only)
-    MPU->RBAR = FLASH_BASE | 0x100000 | MPU_RBAR_VALID_Msk | MPU_REGION_NUMBER4;
-    MPU->RASR = MPU_RASR_ENABLE_Msk | MPU_RASR_ATTR_FLASH | LL_MPU_REGION_SIZE_1MB | LL_MPU_REGION_PRIV_RO_URO | MPU_SUBREGION_DISABLE(0x01);
+    // Flash (0x0810C000 - 0x0810FFFF, 16 KiB, no access)
+    MPU->RNR = MPU_REGION_NUMBER2;
+    MPU->RBAR = FLASH_BASE + 0x10C000;
+    MPU->RASR = MPU_RASR_ENABLE_Msk | MPU_RASR_ATTR_FLASH | LL_MPU_REGION_SIZE_16KB | LL_MPU_REGION_NO_ACCESS;
 
     // SRAM (0x20000000 - 0x2002FFFF, 192 KiB = 256 KiB except 2/8 at end, read-write, execute never)
-    MPU->RBAR = SRAM_BASE | MPU_RBAR_VALID_Msk | MPU_REGION_NUMBER5;
+    MPU->RNR = MPU_REGION_NUMBER3;
+    MPU->RBAR = SRAM_BASE;
     MPU->RASR = MPU_RASR_ENABLE_Msk | MPU_RASR_ATTR_SRAM | LL_MPU_REGION_SIZE_256KB | LL_MPU_REGION_FULL_ACCESS | MPU_RASR_XN_Msk | MPU_SUBREGION_DISABLE(0xC0);
 
     // Peripherals (0x40000000 - 0x5FFFFFFF, read-write, execute never)
     // External RAM (0x60000000 - 0x7FFFFFFF, read-write, execute never)
-    MPU->RBAR = PERIPH_BASE | MPU_RBAR_VALID_Msk | MPU_REGION_NUMBER6;
+    MPU->RNR = MPU_REGION_NUMBER4;
+    MPU->RBAR = PERIPH_BASE;
     MPU->RASR = MPU_RASR_ENABLE_Msk | MPU_RASR_ATTR_PERIPH | LL_MPU_REGION_SIZE_1GB | LL_MPU_REGION_FULL_ACCESS | MPU_RASR_XN_Msk;
 
 #ifdef STM32F427xx
     // CCMRAM (0x10000000 - 0x1000FFFF, read-write, execute never)
-    MPU->RBAR = CCMDATARAM_BASE | MPU_RBAR_VALID_Msk | MPU_REGION_NUMBER7;
+    MPU->RNR = MPU_REGION_NUMBER5;
+    MPU->RBAR = CCMDATARAM_BASE;
     MPU->RASR = MPU_RASR_ENABLE_Msk | MPU_RASR_ATTR_SRAM | LL_MPU_REGION_SIZE_64KB | LL_MPU_REGION_FULL_ACCESS | MPU_RASR_XN_Msk;
 #elif STM32F405xx
     // no CCMRAM
@@ -77,5 +78,69 @@ void mpu_config(void)
 #endif
 
     // Enable MPU
-    HAL_MPU_Enable(0);
+    HAL_MPU_Enable(LL_MPU_CTRL_HARDFAULT_NMI);
+}
+
+
+void mpu_config_firmware(void)
+{
+    // Disable MPU
+    HAL_MPU_Disable();
+
+    // Note: later entries overwrite previous ones
+
+/*
+    // Boardloader (0x08000000 - 0x0800FFFF, 64 KiB, read-only, execute never)
+    MPU->RBAR = FLASH_BASE | MPU_REGION_NUMBER0;
+    MPU->RASR = MPU_RASR_ENABLE_Msk | MPU_RASR_ATTR_FLASH | LL_MPU_REGION_SIZE_64KB | LL_MPU_REGION_PRIV_RO_URO | MPU_RASR_XN_Msk;
+*/
+
+    // Bootloader (0x08020000 - 0x0803FFFF, 64 KiB, read-only)
+    MPU->RNR = MPU_REGION_NUMBER0;
+    MPU->RBAR = FLASH_BASE + 0x20000;
+    MPU->RASR = MPU_RASR_ENABLE_Msk | MPU_RASR_ATTR_FLASH | LL_MPU_REGION_SIZE_64KB | LL_MPU_REGION_PRIV_RO_URO;
+
+    // Storage#1 (0x08010000 - 0x0801FFFF, 64 KiB, read-write, execute never)
+    MPU->RNR = MPU_REGION_NUMBER1;
+    MPU->RBAR = FLASH_BASE + 0x10000;
+    MPU->RASR = MPU_RASR_ENABLE_Msk | MPU_RASR_ATTR_FLASH | LL_MPU_REGION_SIZE_64KB | LL_MPU_REGION_FULL_ACCESS | MPU_RASR_XN_Msk;
+    // Storage#2 (0x08110000 - 0x0811FFFF, 64 KiB, read-write, execute never)
+    MPU->RNR = MPU_REGION_NUMBER2;
+    MPU->RBAR = FLASH_BASE + 0x110000;
+    MPU->RASR = MPU_RASR_ENABLE_Msk | MPU_RASR_ATTR_FLASH | LL_MPU_REGION_SIZE_64KB | LL_MPU_REGION_FULL_ACCESS | MPU_RASR_XN_Msk;
+
+    // Firmware (0x08040000 - 0x080FFFFF, 6 * 128 KiB = 1024 KiB except 2/8 at start = 768 KiB, read-only)
+    MPU->RNR = MPU_REGION_NUMBER3;
+    MPU->RBAR = FLASH_BASE;
+    MPU->RASR = MPU_RASR_ENABLE_Msk | MPU_RASR_ATTR_FLASH | LL_MPU_REGION_SIZE_1MB | LL_MPU_REGION_PRIV_RO_URO | MPU_SUBREGION_DISABLE(0x03);
+
+    // Firmware extra (0x08120000 - 0x081FFFFF, 7 * 128 KiB = 1024 KiB except 1/8 at start = 896 KiB, read-only)
+    MPU->RNR = MPU_REGION_NUMBER4;
+    MPU->RBAR = FLASH_BASE + 0x100000;
+    MPU->RASR = MPU_RASR_ENABLE_Msk | MPU_RASR_ATTR_FLASH | LL_MPU_REGION_SIZE_1MB | LL_MPU_REGION_PRIV_RO_URO | MPU_SUBREGION_DISABLE(0x01);
+
+    // SRAM (0x20000000 - 0x2002FFFF, 192 KiB = 256 KiB except 2/8 at end, read-write, execute never)
+    MPU->RNR = MPU_REGION_NUMBER5;
+    MPU->RBAR = SRAM_BASE;
+    MPU->RASR = MPU_RASR_ENABLE_Msk | MPU_RASR_ATTR_SRAM | LL_MPU_REGION_SIZE_256KB | LL_MPU_REGION_FULL_ACCESS | MPU_RASR_XN_Msk | MPU_SUBREGION_DISABLE(0xC0);
+
+    // Peripherals (0x40000000 - 0x5FFFFFFF, read-write, execute never)
+    // External RAM (0x60000000 - 0x7FFFFFFF, read-write, execute never)
+    MPU->RNR = MPU_REGION_NUMBER6;
+    MPU->RBAR = PERIPH_BASE;
+    MPU->RASR = MPU_RASR_ENABLE_Msk | MPU_RASR_ATTR_PERIPH | LL_MPU_REGION_SIZE_1GB | LL_MPU_REGION_FULL_ACCESS | MPU_RASR_XN_Msk;
+
+#ifdef STM32F427xx
+    // CCMRAM (0x10000000 - 0x1000FFFF, read-write, execute never)
+    MPU->RNR = MPU_REGION_NUMBER7;
+    MPU->RBAR = CCMDATARAM_BASE;
+    MPU->RASR = MPU_RASR_ENABLE_Msk | MPU_RASR_ATTR_SRAM | LL_MPU_REGION_SIZE_64KB | LL_MPU_REGION_FULL_ACCESS | MPU_RASR_XN_Msk;
+#elif STM32F405xx
+    // no CCMRAM
+#else
+#error Unsupported MCU
+#endif
+
+    // Enable MPU
+    HAL_MPU_Enable(LL_MPU_CTRL_HARDFAULT_NMI);
 }
diff --git a/embed/trezorhal/mpu.h b/embed/trezorhal/mpu.h
index 2a7ccf6fcd..c7c136849e 100644
--- a/embed/trezorhal/mpu.h
+++ b/embed/trezorhal/mpu.h
@@ -20,6 +20,8 @@
 #ifndef __MPU_H__
 #define __MPU_H__
 
-void mpu_config(void);
+void mpu_config_off(void);
+void mpu_config_bootloader(void);
+void mpu_config_firmware(void);
 
 #endif
diff --git a/embed/trezorhal/stm32.c b/embed/trezorhal/stm32.c
index 41de13aafb..5c74fd350a 100644
--- a/embed/trezorhal/stm32.c
+++ b/embed/trezorhal/stm32.c
@@ -79,7 +79,8 @@ void SysTick_Handler(void)
     uwTick++;
 }
 
-void shutdown(void);
+// from util.s
+extern void shutdown(void);
 
 void PVD_IRQHandler(void)
 {
diff --git a/embed/trezorhal/usb.c b/embed/trezorhal/usb.c
index 57dff2b0f5..03ac2cd5b5 100644
--- a/embed/trezorhal/usb.c
+++ b/embed/trezorhal/usb.c
@@ -314,6 +314,7 @@ static uint8_t usb_class_deinit(USBD_HandleTypeDef *dev, uint8_t cfg_idx) {
 #define USB_WEBUSB_URL_SCHEME_HTTPS     1
 
 static uint8_t usb_class_setup(USBD_HandleTypeDef *dev, USBD_SetupReqTypedef *req) {
+    delay_random();
     if (((req->bmRequest & USB_REQ_TYPE_MASK) != USB_REQ_TYPE_CLASS) &&
         ((req->bmRequest & USB_REQ_TYPE_MASK) != USB_REQ_TYPE_STANDARD) &&
         ((req->bmRequest & USB_REQ_TYPE_MASK) != USB_REQ_TYPE_VENDOR)) {
@@ -330,7 +331,7 @@ static uint8_t usb_class_setup(USBD_HandleTypeDef *dev, USBD_SetupReqTypedef *re
                         USB_WEBUSB_URL_SCHEME_HTTPS,        // uint8_t bScheme
                         't', 'r', 'e', 'z', 'o', 'r', '.', 'i', 'o', '/', 's', 't', 'a', 'r', 't',  // char URL[]
                     };
-                    USBD_CtlSendData(dev, UNCONST(webusb_url), MIN(req->wLength, sizeof(webusb_url)));
+                    USBD_CtlSendData(dev, UNCONST(webusb_url), MIN_8bits(req->wLength, sizeof(webusb_url)));
                     return USBD_OK;
                 } else {
                     USBD_CtlError(dev, req);
@@ -354,7 +355,7 @@ static uint8_t usb_class_setup(USBD_HandleTypeDef *dev, USBD_SetupReqTypedef *re
                         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // subCompatibleId
                         0x00, 0x00, 0x00, 0x00, 0x00, 0x00,             // reserved
                     };
-                    USBD_CtlSendData(dev, UNCONST(winusb_wcid), MIN(req->wLength, sizeof(winusb_wcid)));
+                    USBD_CtlSendData(dev, UNCONST(winusb_wcid), MIN_8bits(req->wLength, sizeof(winusb_wcid)));
                     return USBD_OK;
                 } else {
                     USBD_CtlError(dev, req);
@@ -380,7 +381,7 @@ static uint8_t usb_class_setup(USBD_HandleTypeDef *dev, USBD_SetupReqTypedef *re
                         0x50, 0x00, 0x00, 0x00, // dwPropertyDataLength
                         '{', 0x00, 'c', 0x00, '6', 0x00, 'c', 0x00, '3', 0x00, '7', 0x00, '4', 0x00, 'a', 0x00, '6', 0x00, '-', 0x00, '2', 0x00, '2', 0x00, '8', 0x00, '5', 0x00, '-', 0x00, '4', 0x00, 'c', 0x00, 'b', 0x00, '8', 0x00, '-', 0x00, 'a', 0x00, 'b', 0x00, '4', 0x00, '3', 0x00, '-', 0x00, '1', 0x00, '7', 0x00, '6', 0x00, '4', 0x00, '7', 0x00, 'c', 0x00, 'e', 0x00, 'a', 0x00, '5', 0x00, '0', 0x00, '3', 0x00, 'd', 0x00, '}', 0x00, 0x00, 0x00, 0x00, 0x00,  // propertyData
                     };
-                    USBD_CtlSendData(dev, UNCONST(winusb_guid), MIN(req->wLength, sizeof(winusb_guid)));
+                    USBD_CtlSendData(dev, UNCONST(winusb_guid), MIN_8bits(req->wLength, sizeof(winusb_guid)));
                     return USBD_OK;
                 } else {
                     USBD_CtlError(dev, req);
@@ -410,6 +411,7 @@ static uint8_t usb_class_setup(USBD_HandleTypeDef *dev, USBD_SetupReqTypedef *re
 }
 
 static uint8_t usb_class_data_in(USBD_HandleTypeDef *dev, uint8_t ep_num) {
+    delay_random();
     for (int i = 0; i < USBD_MAX_NUM_INTERFACES; i++) {
         switch (usb_ifaces[i].type) {
             case USB_IFACE_TYPE_HID:
@@ -429,6 +431,7 @@ static uint8_t usb_class_data_in(USBD_HandleTypeDef *dev, uint8_t ep_num) {
 }
 
 static uint8_t usb_class_data_out(USBD_HandleTypeDef *dev, uint8_t ep_num) {
+    delay_random();
     for (int i = 0; i < USBD_MAX_NUM_INTERFACES; i++) {
         switch (usb_ifaces[i].type) {
             case USB_IFACE_TYPE_HID:
@@ -448,6 +451,7 @@ static uint8_t usb_class_data_out(USBD_HandleTypeDef *dev, uint8_t ep_num) {
 }
 
 static uint8_t usb_class_sof(USBD_HandleTypeDef *dev) {
+    delay_random();
     for (int i = 0; i < USBD_MAX_NUM_INTERFACES; i++) {
         switch (usb_ifaces[i].type) {
             case USB_IFACE_TYPE_VCP:
diff --git a/embed/trezorhal/usb_hid-impl.h b/embed/trezorhal/usb_hid-impl.h
index 084342557e..7b20c9beeb 100644
--- a/embed/trezorhal/usb_hid-impl.h
+++ b/embed/trezorhal/usb_hid-impl.h
@@ -254,7 +254,6 @@ static void usb_hid_class_deinit(USBD_HandleTypeDef *dev, usb_hid_state_t *state
 }
 
 static int usb_hid_class_setup(USBD_HandleTypeDef *dev, usb_hid_state_t *state, USBD_SetupReqTypedef *req) {
-
     switch (req->bmRequest & USB_REQ_TYPE_MASK) {
 
         // Class request
@@ -302,11 +301,11 @@ static int usb_hid_class_setup(USBD_HandleTypeDef *dev, usb_hid_state_t *state,
                     switch (req->wValue >> 8) {
 
                         case USB_DESC_TYPE_HID:
-                            USBD_CtlSendData(dev, UNCONST(&state->desc_block->hid), MIN(req->wLength, sizeof(state->desc_block->hid)));
+                            USBD_CtlSendData(dev, UNCONST(&state->desc_block->hid), MIN_8bits(req->wLength, sizeof(state->desc_block->hid)));
                             return USBD_OK;
 
                         case USB_DESC_TYPE_REPORT:
-                            USBD_CtlSendData(dev, UNCONST(state->report_desc), MIN(req->wLength, state->report_desc_len));
+                            USBD_CtlSendData(dev, UNCONST(state->report_desc), MIN_8bits(req->wLength, state->report_desc_len));
                             return USBD_OK;
 
                         default:
diff --git a/embed/trezorhal/usb_vcp-impl.h b/embed/trezorhal/usb_vcp-impl.h
index 28aa63875d..9f8d81e2a8 100644
--- a/embed/trezorhal/usb_vcp-impl.h
+++ b/embed/trezorhal/usb_vcp-impl.h
@@ -364,13 +364,13 @@ static int usb_vcp_class_setup(USBD_HandleTypeDef *dev, usb_vcp_state_t *state,
 
     if ((req->bmRequest & USB_REQ_DIR_MASK) == USB_REQ_DIR_D2H) {
         if (req->bRequest == USB_CDC_GET_LINE_CODING) {
-            USBD_CtlSendData(dev, UNCONST(&line_coding), MIN(req->wLength, sizeof(line_coding)));
+            USBD_CtlSendData(dev, UNCONST(&line_coding), MIN_8bits(req->wLength, sizeof(line_coding)));
         } else {
-            USBD_CtlSendData(dev, state->cmd_buffer, MIN(req->wLength, USB_CDC_MAX_CMD_PACKET_LEN));
+            USBD_CtlSendData(dev, state->cmd_buffer, MIN_8bits(req->wLength, USB_CDC_MAX_CMD_PACKET_LEN));
         }
     } else { // USB_REQ_DIR_H2D
         if (req->wLength > 0) {
-            USBD_CtlPrepareRx(dev, state->cmd_buffer, MIN(req->wLength, USB_CDC_MAX_CMD_PACKET_LEN));
+            USBD_CtlPrepareRx(dev, state->cmd_buffer, MIN_8bits(req->wLength, USB_CDC_MAX_CMD_PACKET_LEN));
         }
     }
 
diff --git a/embed/trezorhal/usbd_def.h b/embed/trezorhal/usbd_def.h
index d3c3e5b991..e3da6243db 100644
--- a/embed/trezorhal/usbd_def.h
+++ b/embed/trezorhal/usbd_def.h
@@ -263,9 +263,12 @@ typedef struct _USBD_HandleTypeDef
 
 #define LOBYTE(x)  ((uint8_t)(x & 0x00FF))
 #define HIBYTE(x)  ((uint8_t)((x & 0xFF00) >>8))
+#ifndef MIN
 #define MIN(a, b)  (((a) < (b)) ? (a) : (b))
+#endif
+#ifndef MAX
 #define MAX(a, b)  (((a) > (b)) ? (a) : (b))
-
+#endif
 
 #if  defined ( __GNUC__ )
   #ifndef __weak
diff --git a/embed/unix/common.h b/embed/unix/common.h
index fd6c959495..e0bc6dde8f 100644
--- a/embed/unix/common.h
+++ b/embed/unix/common.h
@@ -27,10 +27,10 @@
 #define STR(s) #s
 
 #ifndef MIN
-#define MIN(a, b) (((a) < (b)) ? (a) : (b))
+#define MIN(a, b) ({ typeof(a) _a = (a); typeof(b) _b = (b); _a < _b ? _a : _b; })
 #endif
 #ifndef MAX
-#define MAX(a, b) (((a) > (b)) ? (a) : (b))
+#define MAX(a, b) ({ typeof(a) _a = (a); typeof(b) _b = (b); _a > _b ? _a : _b; })
 #endif
 
 void __attribute__((noreturn)) __fatal_error(const char *expr, const char *msg, const char *file, int line, const char *func);
diff --git a/embed/unix/flash.c b/embed/unix/flash.c
index 4e68a99538..8e4febe6ab 100644
--- a/embed/unix/flash.c
+++ b/embed/unix/flash.c
@@ -62,6 +62,27 @@ static const uint32_t FLASH_SECTOR_TABLE[FLASH_SECTOR_COUNT + 1] = {
     [24] = 0x08200000, // last element - not a valid sector
 };
 
+const uint8_t FIRMWARE_SECTORS[FIRMWARE_SECTORS_COUNT] = {
+    FLASH_SECTOR_FIRMWARE_START,
+    7,
+    8,
+    9,
+    10,
+    FLASH_SECTOR_FIRMWARE_END,
+    FLASH_SECTOR_FIRMWARE_EXTRA_START,
+    18,
+    19,
+    20,
+    21,
+    22,
+    FLASH_SECTOR_FIRMWARE_EXTRA_END,
+};
+
+const uint8_t STORAGE_SECTORS[STORAGE_SECTORS_COUNT] = {
+    FLASH_SECTOR_STORAGE_1,
+    FLASH_SECTOR_STORAGE_2,
+};
+
 static uint8_t *FLASH_BUFFER;
 static uint32_t FLASH_SIZE;
 
diff --git a/src/apps/common/request_pin.py b/src/apps/common/request_pin.py
index 82eb3eb77b..c0d9f091c2 100644
--- a/src/apps/common/request_pin.py
+++ b/src/apps/common/request_pin.py
@@ -36,6 +36,17 @@ async def request_pin(
                 c.taint()
         c.render()
 
+        c = dialog.confirm
+        if matrix.pin:
+            if not c.is_enabled():
+                c.enable()
+                c.taint()
+        else:
+            if c.is_enabled():
+                c.disable()
+                c.taint()
+        c.render()
+
     if label is None:
         label = "Enter your PIN"
     sublabel = None
@@ -59,6 +70,8 @@ async def request_pin(
         else:
             result = await dialog
         if result == CONFIRMED:
+            if not matrix.pin:
+                continue
             return matrix.pin
         elif matrix.pin:  # reset
             matrix.change("")
diff --git a/src/apps/common/storage.py b/src/apps/common/storage.py
index 92c2a0d13c..e30f263dce 100644
--- a/src/apps/common/storage.py
+++ b/src/apps/common/storage.py
@@ -195,7 +195,7 @@ def init_unlocked():
         counter = config.get(_APP, _U2F_COUNTER)
         if counter is not None:
             config.set_counter(
-                _APP, _U2F_COUNTER, counter, True
+                _APP, _U2F_COUNTER, int.from_bytes(counter, "big"), True
             )  # writable when locked
             config.delete(_APP, _U2F_COUNTER)
         config.set(_APP, _VERSION, _STORAGE_VERSION)
diff --git a/src/apps/fido_u2f/__init__.py b/src/apps/fido_u2f/__init__.py
index fae31981c6..1825a3d259 100644
--- a/src/apps/fido_u2f/__init__.py
+++ b/src/apps/fido_u2f/__init__.py
@@ -353,7 +353,7 @@ class ConfirmState:
             return False
         return True
 
-    def setup(self, action: int, checksum: bytes, app_id: bytes) -> None:
+    def setup(self, action: int, checksum: bytes, app_id: bytes) -> bool:
         if workflow.workflows:
             return False
 
@@ -379,6 +379,10 @@ class ConfirmState:
 
     @ui.layout
     async def confirm_layout(self) -> None:
+        workflow.fido_u2f_stop_signal.reset()
+        await loop.spawn(self.confirm_layout_inner(), workflow.fido_u2f_stop_signal)
+
+    async def confirm_layout_inner(self) -> None:
         from trezor.ui.confirm import ConfirmDialog, CONFIRMED
         from trezor.ui.text import Text
 
diff --git a/src/apps/management/change_pin.py b/src/apps/management/change_pin.py
index b85a7e0338..bff28395a1 100644
--- a/src/apps/management/change_pin.py
+++ b/src/apps/management/change_pin.py
@@ -17,8 +17,10 @@ async def change_pin(ctx, msg):
     # get current pin, return failure if invalid
     if config.has_pin():
         curpin = await request_pin_ack(ctx, "Enter old PIN", config.get_pin_rem())
-        if not config.check_pin(pin_to_int(curpin)):
-            raise wire.PinInvalid("PIN invalid")
+        # if removing, defer check to change_pin()
+        if not msg.remove:
+            if not config.check_pin(pin_to_int(curpin)):
+                raise wire.PinInvalid("PIN invalid")
     else:
         curpin = ""
 
diff --git a/src/apps/management/recovery_device.py b/src/apps/management/recovery_device.py
index 07772b085b..271fc8de33 100644
--- a/src/apps/management/recovery_device.py
+++ b/src/apps/management/recovery_device.py
@@ -57,6 +57,8 @@ async def recovery_device(ctx, msg):
     # ask for pin repeatedly
     if msg.pin_protection:
         newpin = await request_pin_confirm(ctx, cancellable=False)
+    else:
+        newpin = ""
 
     # dry run
     if msg.dry_run:
@@ -72,7 +74,7 @@ async def recovery_device(ctx, msg):
             )
 
     # save into storage
-    if msg.pin_protection:
+    if newpin:
         config.change_pin(pin_to_int(""), pin_to_int(newpin))
     storage.set_u2f_counter(msg.u2f_counter)
     storage.load_settings(label=msg.label, use_passphrase=msg.passphrase_protection)
diff --git a/src/apps/management/reset_device.py b/src/apps/management/reset_device.py
index d711a7342f..becc2c27f9 100644
--- a/src/apps/management/reset_device.py
+++ b/src/apps/management/reset_device.py
@@ -73,8 +73,9 @@ async def reset_device(ctx, msg):
             await show_wrong_entry(ctx)
 
     # write PIN into storage
-    if not config.change_pin(pin_to_int(""), pin_to_int(newpin)):
-        raise wire.ProcessError("Could not change PIN")
+    if newpin:
+        if not config.change_pin(pin_to_int(""), pin_to_int(newpin)):
+            raise wire.ProcessError("Could not change PIN")
 
     # write settings and mnemonic into storage
     storage.load_settings(label=msg.label, use_passphrase=msg.passphrase_protection)
diff --git a/src/apps/wallet/sign_tx/__init__.py b/src/apps/wallet/sign_tx/__init__.py
index 2a6213fd6b..3c6fd7bc21 100644
--- a/src/apps/wallet/sign_tx/__init__.py
+++ b/src/apps/wallet/sign_tx/__init__.py
@@ -1,4 +1,4 @@
-from trezor import ui, wire
+from trezor import wire
 from trezor.messages.MessageType import TxAck
 from trezor.messages.RequestType import TXFINISHED
 from trezor.messages.TxRequest import TxRequest
@@ -16,7 +16,6 @@ from apps.wallet.sign_tx import (
 )
 
 
-@ui.layout
 async def sign_tx(ctx, msg, keychain):
     signer = signing.sign_tx(msg, keychain)
 
diff --git a/src/trezor/loop.py b/src/trezor/loop.py
index 8075afbbd1..7d25e5583f 100644
--- a/src/trezor/loop.py
+++ b/src/trezor/loop.py
@@ -185,6 +185,9 @@ class signal(Syscall):
     """
 
     def __init__(self):
+        self.reset()
+
+    def reset(self):
         self.value = _NO_VALUE
         self.task = None
 
diff --git a/src/trezor/pin.py b/src/trezor/pin.py
index eb4faa96df..5c62b69ffe 100644
--- a/src/trezor/pin.py
+++ b/src/trezor/pin.py
@@ -5,11 +5,11 @@ def pin_to_int(pin: str) -> int:
     return int("1" + pin)
 
 
-def show_pin_timeout(seconds: int, progress: int) -> bool:
+def show_pin_timeout(seconds: int, progress: int, message: str) -> bool:
     if progress == 0:
         ui.display.bar(0, 0, ui.WIDTH, ui.HEIGHT, ui.BG)
         ui.display.text_center(
-            ui.WIDTH // 2, 37, "Verifying PIN", ui.BOLD, ui.FG, ui.BG, ui.WIDTH
+            ui.WIDTH // 2, 37, message, ui.BOLD, ui.FG, ui.BG, ui.WIDTH
         )
     ui.display.loader(progress, 0, ui.FG, ui.BG)
     if seconds == 0:
diff --git a/src/trezor/ui/button.py b/src/trezor/ui/button.py
index 5d39410a77..75f5e427d2 100644
--- a/src/trezor/ui/button.py
+++ b/src/trezor/ui/button.py
@@ -36,6 +36,9 @@ class Button(Widget):
             self.state = BTN_DISABLED
             self.tainted = True
 
+    def is_enabled(self):
+        return self.state != BTN_DISABLED
+
     def render(self):
         if not self.tainted:
             return
diff --git a/src/trezor/workflow.py b/src/trezor/workflow.py
index 8b6d32d83d..7e11d4c32c 100644
--- a/src/trezor/workflow.py
+++ b/src/trezor/workflow.py
@@ -5,6 +5,9 @@ layouts = []
 default = None
 default_layout = None
 
+# HACK: workaround way to stop the u2f layout from the outside
+fido_u2f_stop_signal = loop.signal()
+
 
 def onstart(w):
     workflows.append(w)
@@ -44,6 +47,7 @@ def restartdefault():
 def onlayoutstart(l):
     closedefault()
     layouts.append(l)
+    fido_u2f_stop_signal.send(None)
 
 
 def onlayoutclose(l):
diff --git a/vendor/trezor-crypto b/vendor/trezor-crypto
index 21391dc5be..4211ce389f 160000
--- a/vendor/trezor-crypto
+++ b/vendor/trezor-crypto
@@ -1 +1 @@
-Subproject commit 21391dc5be9917bc32a518cf98376f79103727af
+Subproject commit 4211ce389f6795d844809b0ba66a84082038ca04
diff --git a/vendor/trezor-storage b/vendor/trezor-storage
index e55737c4b1..511fc205b2 160000
--- a/vendor/trezor-storage
+++ b/vendor/trezor-storage
@@ -1 +1 @@
-Subproject commit e55737c4b1648c619d654eb25fa06fe381c5a1d4
+Subproject commit 511fc205b284605651348512c5c5c2c95a642fa1