Fix send sync bit update

1 month ago · ad3b878625
parent 73a7bb788a
commit ad3b878625
1 changed files with 2 additions and 1 deletions
--- a/core/src/trezor/wire/thp/thp_session.py
+++ b/core/src/trezor/wire/thp/thp_session.py
@ -132,7 +132,8 @@ def _sync_set_send_bit(cache: SessionThpCache | ChannelCache, bit: int) -> None:

    # set third bit to "bit" value
    cache.sync &= 0xDF
-    cache.sync |= 0x20
+    if bit:
+        cache.sync |= 0x20


 def _decode_session_state(state: bytearray) -> int: