diff --git a/core/Makefile b/core/Makefile
index 7df43189e7..2149eaa350 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -30,9 +30,9 @@ PRODUCTION ?= 0
 PYOPT      ?= 1
 BITCOIN_ONLY ?= 0
 BOOTLOADER_QA ?= 0
-BOOTLOADER_DEVEL ?= 0
+BOOTLOADER_DEVEL ?= 1
 DISABLE_OPTIGA ?= 0
-TREZOR_MODEL ?= T2T1
+TREZOR_MODEL ?= T3W1
 TREZOR_MEMPERF ?= 0
 ADDRESS_SANITIZER ?= 0
 CMAKELISTS ?= 0
diff --git a/python/src/trezorlib/transport/udp.py b/python/src/trezorlib/transport/udp.py
index 7e4c4614c6..887d5a8024 100644
--- a/python/src/trezorlib/transport/udp.py
+++ b/python/src/trezorlib/transport/udp.py
@@ -136,6 +136,7 @@ class UdpTransport(ProtocolBasedTransport):
         return resp == b"PONGPONG"
 
     def write_chunk(self, chunk: bytes) -> None:
+        time.sleep(0.0001)
         assert self.socket is not None
         if len(chunk) != 64:
             raise TransportException("Unexpected data length")