diff --git a/legacy/firmware/fsm_msg_common.h b/legacy/firmware/fsm_msg_common.h
index cc9e2625cb..0b9e959cfd 100644
--- a/legacy/firmware/fsm_msg_common.h
+++ b/legacy/firmware/fsm_msg_common.h
@@ -537,14 +537,20 @@ void fsm_msgGetNextU2FCounter() {
   layoutHome();
 }
 
+static void progress_callback(uint32_t iter, uint32_t total) {
+  layoutProgress(_("Please wait"), 1000 * iter / total);
+}
+
 void fsm_msgGetFirmwareHash(const GetFirmwareHash *msg) {
   RESP_INIT(FirmwareHash);
+  layoutProgressSwipe(_("Please wait"), 0);
   if (memory_firmware_hash(msg->challenge.bytes, msg->challenge.size,
-                           resp->hash.bytes) != 0) {
+                           progress_callback, resp->hash.bytes) != 0) {
     fsm_sendFailure(FailureType_Failure_FirmwareError, NULL);
     return;
   }
 
   resp->hash.size = sizeof(resp->hash.bytes);
   msg_write(MessageType_MessageType_FirmwareHash, resp);
+  layoutHome();
 }
diff --git a/legacy/memory.c b/legacy/memory.c
index 3f8abbc9c6..39cebb3f9a 100644
--- a/legacy/memory.c
+++ b/legacy/memory.c
@@ -22,6 +22,7 @@
 #include <stdint.h>
 #include "blake2s.h"
 #include "flash.h"
+#include "layout.h"
 #include "sha2.h"
 
 #define FLASH_OPTION_BYTES_1 (*(const uint64_t *)0x1FFFC000)
@@ -86,6 +87,7 @@ int memory_bootloader_hash(uint8_t *hash) {
 }
 
 int memory_firmware_hash(const uint8_t *challenge, uint32_t challenge_size,
+                         void (*progress_callback)(uint32_t, uint32_t),
                          uint8_t hash[BLAKE2S_DIGEST_LENGTH]) {
   BLAKE2S_CTX ctx;
   if (challenge_size != 0) {
@@ -104,6 +106,10 @@ int memory_firmware_hash(const uint8_t *challenge, uint32_t challenge_size,
       return 1;
     }
     blake2s_Update(&ctx, data, size);
+    if (progress_callback != NULL) {
+      progress_callback(i - FLASH_CODE_SECTOR_FIRST,
+                        FLASH_CODE_SECTOR_LAST - FLASH_CODE_SECTOR_FIRST);
+    }
   }
 
   return blake2s_Final(&ctx, hash, BLAKE2S_DIGEST_LENGTH);
diff --git a/legacy/memory.h b/legacy/memory.h
index 56584a9057..66b4b911c8 100644
--- a/legacy/memory.h
+++ b/legacy/memory.h
@@ -94,6 +94,7 @@ void memory_protect(void);
 void memory_write_unlock(void);
 int memory_bootloader_hash(uint8_t *hash);
 int memory_firmware_hash(const uint8_t *challenge, uint32_t challenge_size,
+                         void (*progress_callback)(uint32_t, uint32_t),
                          uint8_t hash[32]);
 
 static inline void flash_write32(uint32_t addr, uint32_t word) {