Robin Krahl

@FahadAaly Again, the full output of `make -C utils/lpc55-builder provision-release` would make it easier to diagnose the problem. Are the required udev rules in place as described in https://github.com/Nitrokey/nitrokey-3-firmware/blob/main/docs/lpc55-quickstart.md#preparing-the-device? What...

@FahadAaly That looks like a permissions error. What operating system/distribution do you use? Did you install the Nitrokey udev rules as described [here](https://docs.nitrokey.com/software/nitropy/linux/udev)?

@FahadAaly In the `getfacl` output, I see the username `Debian-gdm`, but the shell shows the user name `fahad`. Do you use multiple accounts on the machine? What is the output...

@bamontales Just to be sure, you are using a Nitrokey 3 Hacker device and not a regular NK3?

@bamontales Regular Nitrokey 3 devices cannot be flashed with custom firmware. You need a [Nitrokey 3 Hacker](https://shop.nitrokey.com/shop/nk3anh-nitrokey-3a-nfc-hacker-404) device for that.

@bamontales Normal Nitrokey 3 devices have secure boot enabled so you can only flash firmware images that have been signed by us.

Closing as stale. Please re-open if the issue still occurs and is not related to the suggested causes.

Possible causes: - We’ve updated Python from 3.9 to 3.10 in https://github.com/Nitrokey/nitrokey-app2/commit/da46e33bf36afa71603c4632aeb85250b26b9e79. - We’ve updated `pywin32` from v305 to v311 in https://github.com/Nitrokey/nitrokey-app2/commit/e7161d0d5c177c606ef5ae1a4945f823e4b1587f.

I tried a similar change and it did not fix the problem for me. I’ll give it another try.

Hi Michael, this is already possible on the command-line with [pynitrokey](https://github.com/nitrokey/pynitrokey) (`nitropy fido2 list-credentials` and `nitropy fido2 delete-credential`). It would be nice to have this feature in the Nitrokey App...