Firmware Update#

(Nitrokey 3 - macOS)

This guide describes how to update the firmware on the Nitrokey 3.


For firmware v.1.0.0 and below the update will delete all user data! Make sure you have proper backup login methods enabled and/or ensure that the Nitrokey 3 is not the only way to authenticate/2FA for your applications/services.

For firmware v1.0.1 and above user data is retained during the update. Anyways, be sure to always have another device (or login method) registered with your service, if for some reason your data is not retained.

How to Update#


Never disconnect the Nitrokey 3 or abort the process while updating, this will likely render your device useless!

  1. Make sure you have the latest pynitrokey version installed, please check the installation instructions for your OS.

  2. Run nitropy nk3 update.

  3. Once instructed by nitropy touch the device to activate bootloader.

  4. macOS only: If instructed by nitropy run update command again.

  5. Please wait until the process finished. (This may vary depending on your operating system)

  6. Optional: run nitropy nk3 test to check if device is working properly after flashing.

In case of any errors please take the logs from /tmp directory (/tmp/nitropy.log.*).