We are pleased to announce that the latest and greatest OnlyKey software is now available! This release includes a new, easier to use desktop app for Windows/Mac/Linux to be used in conjunction with the latest OnlyKey firmware.

Why Upgrade?

This release has a lot of improvements and new features. Here is the list of new features in this release:

  • Support for Yubikey OTP with public key shorter than 16 bytes.
  • Default for OnlyKey DUO challenge-mode is now set to press only, no challenge code required.
  • Fixes for FIDO2 resident key backup/restore.
  • Fix for PD Mode where if sysadmin mode is enabled device is unusable in PD Mode.

Backup Before Upgrading

⚠️ Warning

If your OnlyKey has firmware v0.2-beta.8 or earlier you must backup OnlyKey prior to upgrading. Once firmware is upgraded restore backup file.

Backup OnlyKey - It is always a good idea to create a backup prior to upgrading. Do this by going to the Backup/Restore tab in the OnlyKey app. Ensure you have a copy of your backup key/passphrase (User Guide Backup Instructions here).

Steps to Upgrade

Step 1. Upgrade OnlyKey desktop app - Follow instructions here to install the new OnlyKey app.

Step 2. Upgrade OnlyKey firmware - Follow instructions here to upgrade firmware on the OnlyKey

onlykey-agent users, make sure to install the latest version of onlykey-agent with $ pip3 uninstall onlykey-agent lib-agent and $ pip3 install onlykey-agent. Python 3 is required.

Steps to Upgrade OnlyKey firmware

Download Firmware

There is a tab named Firmware in the app. This may be used to load the latest firmware onto OnlyKey directly through the OnlyKey app.

You can ensure the integrity of your downloaded file by verifying the checksum.
Signed_OnlyKey_3_0_4_STD.txt SHA 256 checksum:

f895100a2f828b66ec5335fd676ef659daf87d51bfeecca5fb8bf9b7c8e259bd