diff --git a/trezorlib/messages_pb2.py b/trezorlib/messages_pb2.py
index d60802cce..7f2f6145a 100644
--- a/trezorlib/messages_pb2.py
+++ b/trezorlib/messages_pb2.py
@@ -20,7 +20,7 @@ from . import types_pb2
 DESCRIPTOR = _descriptor.FileDescriptor(
   name='messages.proto',
   package='',
-  serialized_pb=_b('\n\x0emessages.proto\x1a\x0btypes.proto\"\x0c\n\nInitialize\"\r\n\x0bGetFeatures\"\x98\x03\n\x08\x46\x65\x61tures\x12\x0e\n\x06vendor\x18\x01 \x01(\t\x12\x15\n\rmajor_version\x18\x02 \x01(\r\x12\x15\n\rminor_version\x18\x03 \x01(\r\x12\x15\n\rpatch_version\x18\x04 \x01(\r\x12\x17\n\x0f\x62ootloader_mode\x18\x05 \x01(\x08\x12\x11\n\tdevice_id\x18\x06 \x01(\t\x12\x16\n\x0epin_protection\x18\x07 \x01(\x08\x12\x1d\n\x15passphrase_protection\x18\x08 \x01(\x08\x12\x10\n\x08language\x18\t \x01(\t\x12\r\n\x05label\x18\n \x01(\t\x12\x18\n\x05\x63oins\x18\x0b \x03(\x0b\x32\t.CoinType\x12\x13\n\x0binitialized\x18\x0c \x01(\x08\x12\x10\n\x08revision\x18\r \x01(\x0c\x12\x17\n\x0f\x62ootloader_hash\x18\x0e \x01(\x0c\x12\x10\n\x08imported\x18\x0f \x01(\x08\x12\x12\n\npin_cached\x18\x10 \x01(\x08\x12\x19\n\x11passphrase_cached\x18\x11 \x01(\x08\x12\x18\n\x10\x66irmware_present\x18\x12 \x01(\x08\"\x0e\n\x0c\x43learSession\"\\\n\rApplySettings\x12\x10\n\x08language\x18\x01 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MessageType_DebugLinkMemoryWrite\x10p\x1a\x04\xa0\xb5\x18\x01\x12)\n\x1fMessageType_DebugLinkFlashErase\x10q\x1a\x04\xa0\xb5\x18\x01\x42\x30\n\x1f\x63om.satoshilabs.trezor.protobufB\rTrezorMessage')
   ,
   dependencies=[types_pb2.DESCRIPTOR,])
 _sym_db.RegisterFileDescriptor(DESCRIPTOR)
@@ -298,8 +298,8 @@ _MESSAGETYPE = _descriptor.EnumDescriptor(
   ],
   containing_type=None,
   options=None,
-  serialized_start=4791,
-  serialized_end=7199,
+  serialized_start=4854,
+  serialized_end=7262,
 )
 _sym_db.RegisterEnumDescriptor(_MESSAGETYPE)
 
@@ -1361,6 +1361,13 @@ _LOADDEVICE = _descriptor.Descriptor(
       message_type=None, enum_type=None, containing_type=None,
       is_extension=False, extension_scope=None,
       options=None),
+    _descriptor.FieldDescriptor(
+      name='u2f_counter', full_name='LoadDevice.u2f_counter', index=7,
+      number=8, type=13, cpp_type=3, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
   ],
   extensions=[
   ],
@@ -1373,7 +1380,7 @@ _LOADDEVICE = _descriptor.Descriptor(
   oneofs=[
   ],
   serialized_start=1550,
-  serialized_end=1716,
+  serialized_end=1737,
 )
 
 
@@ -1426,6 +1433,13 @@ _RESETDEVICE = _descriptor.Descriptor(
       message_type=None, enum_type=None, containing_type=None,
       is_extension=False, extension_scope=None,
       options=None),
+    _descriptor.FieldDescriptor(
+      name='u2f_counter', full_name='ResetDevice.u2f_counter', index=6,
+      number=7, type=13, cpp_type=3, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
   ],
   extensions=[
   ],
@@ -1437,8 +1451,8 @@ _RESETDEVICE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=1719,
-  serialized_end=1876,
+  serialized_start=1740,
+  serialized_end=1918,
 )
 
 
@@ -1460,8 +1474,8 @@ _ENTROPYREQUEST = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=1878,
-  serialized_end=1894,
+  serialized_start=1920,
+  serialized_end=1936,
 )
 
 
@@ -1490,8 +1504,8 @@ _ENTROPYACK = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=1896,
-  serialized_end=1925,
+  serialized_start=1938,
+  serialized_end=1967,
 )
 
 
@@ -1544,6 +1558,13 @@ _RECOVERYDEVICE = _descriptor.Descriptor(
       message_type=None, enum_type=None, containing_type=None,
       is_extension=False, extension_scope=None,
       options=None),
+    _descriptor.FieldDescriptor(
+      name='u2f_counter', full_name='RecoveryDevice.u2f_counter', index=6,
+      number=7, type=13, cpp_type=3, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
   ],
   extensions=[
   ],
@@ -1555,8 +1576,8 @@ _RECOVERYDEVICE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=1928,
-  serialized_end=2087,
+  serialized_start=1970,
+  serialized_end=2150,
 )
 
 
@@ -1578,8 +1599,8 @@ _WORDREQUEST = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=2089,
-  serialized_end=2102,
+  serialized_start=2152,
+  serialized_end=2165,
 )
 
 
@@ -1608,8 +1629,8 @@ _WORDACK = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=2104,
-  serialized_end=2127,
+  serialized_start=2167,
+  serialized_end=2190,
 )
 
 
@@ -1652,8 +1673,8 @@ _SIGNMESSAGE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=2129,
-  serialized_end=2206,
+  serialized_start=2192,
+  serialized_end=2269,
 )
 
 
@@ -1703,8 +1724,8 @@ _VERIFYMESSAGE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=2208,
-  serialized_end=2304,
+  serialized_start=2271,
+  serialized_end=2367,
 )
 
 
@@ -1740,8 +1761,8 @@ _MESSAGESIGNATURE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=2306,
-  serialized_end=2360,
+  serialized_start=2369,
+  serialized_end=2423,
 )
 
 
@@ -1798,8 +1819,8 @@ _ENCRYPTMESSAGE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=2362,
-  serialized_end=2480,
+  serialized_start=2425,
+  serialized_end=2543,
 )
 
 
@@ -1842,8 +1863,8 @@ _ENCRYPTEDMESSAGE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=2482,
-  serialized_end=2546,
+  serialized_start=2545,
+  serialized_end=2609,
 )
 
 
@@ -1893,8 +1914,8 @@ _DECRYPTMESSAGE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=2548,
-  serialized_end=2629,
+  serialized_start=2611,
+  serialized_end=2692,
 )
 
 
@@ -1930,8 +1951,8 @@ _DECRYPTEDMESSAGE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=2631,
-  serialized_end=2683,
+  serialized_start=2694,
+  serialized_end=2746,
 )
 
 
@@ -2002,8 +2023,8 @@ _CIPHERKEYVALUE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=2686,
-  serialized_end=2826,
+  serialized_start=2749,
+  serialized_end=2889,
 )
 
 
@@ -2032,8 +2053,8 @@ _CIPHEREDKEYVALUE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=2828,
-  serialized_end=2861,
+  serialized_start=2891,
+  serialized_end=2924,
 )
 
 
@@ -2076,8 +2097,8 @@ _ESTIMATETXSIZE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=2863,
-  serialized_end=2952,
+  serialized_start=2926,
+  serialized_end=3015,
 )
 
 
@@ -2106,8 +2127,8 @@ _TXSIZE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=2954,
-  serialized_end=2979,
+  serialized_start=3017,
+  serialized_end=3042,
 )
 
 
@@ -2164,8 +2185,8 @@ _SIGNTX = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=2981,
-  serialized_end=3104,
+  serialized_start=3044,
+  serialized_end=3167,
 )
 
 
@@ -2229,8 +2250,8 @@ _SIMPLESIGNTX = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=3107,
-  serialized_end=3293,
+  serialized_start=3170,
+  serialized_end=3356,
 )
 
 
@@ -2273,8 +2294,8 @@ _TXREQUEST = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=3296,
-  serialized_end=3429,
+  serialized_start=3359,
+  serialized_end=3492,
 )
 
 
@@ -2303,8 +2324,8 @@ _TXACK = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=3431,
-  serialized_end=3468,
+  serialized_start=3494,
+  serialized_end=3531,
 )
 
 
@@ -2382,8 +2403,8 @@ _ETHEREUMSIGNTX = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=3471,
-  serialized_end=3635,
+  serialized_start=3534,
+  serialized_end=3698,
 )
 
 
@@ -2433,8 +2454,8 @@ _ETHEREUMTXREQUEST = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=3637,
-  serialized_end=3740,
+  serialized_start=3700,
+  serialized_end=3803,
 )
 
 
@@ -2463,8 +2484,8 @@ _ETHEREUMTXACK = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=3742,
-  serialized_end=3777,
+  serialized_start=3805,
+  serialized_end=3840,
 )
 
 
@@ -2514,8 +2535,8 @@ _SIGNIDENTITY = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=3779,
-  serialized_end=3904,
+  serialized_start=3842,
+  serialized_end=3967,
 )
 
 
@@ -2558,8 +2579,8 @@ _SIGNEDIDENTITY = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=3906,
-  serialized_end=3978,
+  serialized_start=3969,
+  serialized_end=4041,
 )
 
 
@@ -2602,8 +2623,8 @@ _GETECDHSESSIONKEY = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=3980,
-  serialized_end=4083,
+  serialized_start=4043,
+  serialized_end=4146,
 )
 
 
@@ -2632,8 +2653,8 @@ _ECDHSESSIONKEY = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=4085,
-  serialized_end=4122,
+  serialized_start=4148,
+  serialized_end=4185,
 )
 
 
@@ -2662,8 +2683,8 @@ _SETU2FCOUNTER = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=4124,
-  serialized_end=4160,
+  serialized_start=4187,
+  serialized_end=4223,
 )
 
 
@@ -2685,8 +2706,8 @@ _FIRMWAREERASE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=4162,
-  serialized_end=4177,
+  serialized_start=4225,
+  serialized_end=4240,
 )
 
 
@@ -2715,8 +2736,8 @@ _FIRMWAREUPLOAD = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=4179,
-  serialized_end=4212,
+  serialized_start=4242,
+  serialized_end=4275,
 )
 
 
@@ -2745,8 +2766,8 @@ _DEBUGLINKDECISION = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=4214,
-  serialized_end=4249,
+  serialized_start=4277,
+  serialized_end=4312,
 )
 
 
@@ -2768,8 +2789,8 @@ _DEBUGLINKGETSTATE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=4251,
-  serialized_end=4270,
+  serialized_start=4314,
+  serialized_end=4333,
 )
 
 
@@ -2861,8 +2882,8 @@ _DEBUGLINKSTATE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=4273,
-  serialized_end=4508,
+  serialized_start=4336,
+  serialized_end=4571,
 )
 
 
@@ -2884,8 +2905,8 @@ _DEBUGLINKSTOP = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=4510,
-  serialized_end=4525,
+  serialized_start=4573,
+  serialized_end=4588,
 )
 
 
@@ -2928,8 +2949,8 @@ _DEBUGLINKLOG = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=4527,
-  serialized_end=4586,
+  serialized_start=4590,
+  serialized_end=4649,
 )
 
 
@@ -2965,8 +2986,8 @@ _DEBUGLINKMEMORYREAD = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=4588,
-  serialized_end=4642,
+  serialized_start=4651,
+  serialized_end=4705,
 )
 
 
@@ -2995,8 +3016,8 @@ _DEBUGLINKMEMORY = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=4644,
-  serialized_end=4677,
+  serialized_start=4707,
+  serialized_end=4740,
 )
 
 
@@ -3039,8 +3060,8 @@ _DEBUGLINKMEMORYWRITE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=4679,
-  serialized_end=4749,
+  serialized_start=4742,
+  serialized_end=4812,
 )
 
 
@@ -3069,8 +3090,8 @@ _DEBUGLINKFLASHERASE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=4751,
-  serialized_end=4788,
+  serialized_start=4814,
+  serialized_end=4851,
 )
 
 _FEATURES.fields_by_name['coins'].message_type = types_pb2._COINTYPE