Update Nirokey 3A NFC failed

Agent_Smis · January 29, 2026, 8:06am

Hallo,

bekomme beim Updateversuch der Firmware mit der Nitrokey App Version 2.5 folgende Meldung:

Nitrokey 3 Update failed. Wrong Channel.

Wie kann ich das Problem beheben?

Danke

Thorsten

alexandre · January 29, 2026, 9:15am

Hello, can you please install the udev rules:

and try the update again.

Agent_Smis · January 29, 2026, 9:26am

I have windows 11. This is for Linux.

alexandre · January 29, 2026, 11:10am

sorry, we are working on this issue:

github.com/Nitrokey/nitrokey-app2

NK3 firmware update fails with v2.5.0

opened 11:03AM - 29 Jan 26 UTC

robin-nitrokey

Trying to update the firmware for a NK3CN with v2.5.0 fails with a Wrong Channel… error: ``` File "/home/robin/reps/nitrokey-app2/nitrokeyapp/update.py", line 247, in update _, status = updater.update(device=device, image=image, update_version=None) ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/robin/reps/nitrokey-app2/.venv/lib/python3.13/site-packages/nitrokey/trussed/updates.py", line 301, in update current_version = device.admin.version() File "/home/robin/reps/nitrokey-app2/.venv/lib/python3.13/site-packages/nitrokey/trussed/admin_app.py", line 282, in version reply = self._call(AdminCommand.VERSION, data=bytes([0x01])) File "/home/robin/reps/nitrokey-app2/.venv/lib/python3.13/site-packages/nitrokey/trussed/admin_app.py", line 208, in _call return self.device._call( ~~~~~~~~~~~~~~~~~^ command.value, ^^^^^^^^^^^^^^ ...<2 lines>... data=data, ^^^^^^^^^^ ) ^ File "/home/robin/reps/nitrokey-app2/.venv/lib/python3.13/site-packages/nitrokey/trussed/_device.py", line 76, in _call response = self.device.call(command, data=data) File "/home/robin/reps/nitrokey-app2/.venv/lib/python3.13/site-packages/fido2/hid/__init__.py", line 174, in call return self._do_call(cmd, data, event, on_keepalive) ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/robin/reps/nitrokey-app2/.venv/lib/python3.13/site-packages/fido2/hid/__init__.py", line 214, in _do_call raise ConnectionFailure("Wrong channel") fido2.hid.ConnectionFailure: Wrong channel ```

In meantime I would recommend using nitropy to perform the update.

Agent_Smis · January 29, 2026, 2:49pm

THX that it.