diff --git a/python/src/trezorlib/transport/thp/channel_data.py b/python/src/trezorlib/transport/thp/channel_data.py
index 461fcac9bf..4d9d11d8d0 100644
--- a/python/src/trezorlib/transport/thp/channel_data.py
+++ b/python/src/trezorlib/transport/thp/channel_data.py
@@ -29,7 +29,7 @@ class ChannelData:
         self.nonce_response: int = nonce_response
         self.sync_bit_receive: int = sync_bit_receive
         self.sync_bit_send: int = sync_bit_send
-        self.handshake_hash: bytes = handshake_hash
+        self.handshake_hash: str = hexlify(handshake_hash).decode()
 
     def to_dict(self):
         return {
diff --git a/python/src/trezorlib/transport/thp/channel_database.py b/python/src/trezorlib/transport/thp/channel_database.py
index 22b72e2809..03be0f7ece 100644
--- a/python/src/trezorlib/transport/thp/channel_database.py
+++ b/python/src/trezorlib/transport/thp/channel_database.py
@@ -122,7 +122,7 @@ def dict_to_channel_data(dict: t.Dict) -> ChannelData:
         nonce_response=dict["nonce_response"],
         sync_bit_send=dict["sync_bit_send"],
         sync_bit_receive=dict["sync_bit_receive"],
-        handshake_hash=dict["handshake_hash"],
+        handshake_hash=bytes.fromhex(dict["handshake_hash"]),
     )
 
 
diff --git a/python/src/trezorlib/transport/thp/protocol_v2.py b/python/src/trezorlib/transport/thp/protocol_v2.py
index 2eaa92d648..17f463d49b 100644
--- a/python/src/trezorlib/transport/thp/protocol_v2.py
+++ b/python/src/trezorlib/transport/thp/protocol_v2.py
@@ -61,6 +61,7 @@ class ProtocolV2(ProtocolAndChannel):
     nonce_response: int
     sync_bit_send: int
     sync_bit_receive: int
+    handshake_hash: bytes
 
     _has_valid_channel: bool = False
     _features: messages.Features | None = None
@@ -81,7 +82,7 @@ class ProtocolV2(ProtocolAndChannel):
             self.nonce_response = channel_data.nonce_response
             self.sync_bit_receive = channel_data.sync_bit_receive
             self.sync_bit_send = channel_data.sync_bit_send
-            self.handshake_hash: bytes = b""
+            self.handshake_hash = bytes.fromhex(channel_data.handshake_hash)
             self._has_valid_channel = True
 
     def get_channel(self, helper_debug: DebugLink | None = None) -> ProtocolV2: