How to check your YubiKey firmware version

How to Find Your Firmware Version for Your YubiKey

Knowing the firmware version of your YubiKey is essential before adding your YubiKey as a vault key with Casa app. The minimum supported firmware for Vaults is F/W: 5.5 You can find the firmware version of your YubiKey using either the YubiKey Manager or the Yubico Authenticator.

Method 1: Using YubiKey Manager

1. Download and Install YubiKey Manager:

  • Visit the YubiKey Manager download page.
  • Select the appropriate version for your operating system (Windows, macOS, Linux).
  • Download and install the application.

2. Open YubiKey Manager:

  • Launch the YubiKey Manager application on your computer.

3. Insert Your YubiKey:

  • Plug your YubiKey into a USB port on your computer.

4. Identify Your YubiKey:

  • Once inserted, the YubiKey Manager will automatically detect your YubiKey.
  • The main screen will display key information about your YubiKey, including the model, firmware version, and serial number.

5. Locate the Firmware Version:

  • Look for the section labeled “Firmware Version” on the main screen. This will display the firmware version of your YubiKey.

  • Using YubiKey as a Casa hardware device requires a firmware version of 5.5 or above. 

Method 2: Using Yubico Authenticator

1. Download and Install Yubico Authenticator:

  • Visit the Yubico Authenticator download page.
  • Select the appropriate version for your operating system (Windows, macOS, Linux, Android, iOS).
  • Download and install the application.

2. Open Yubico Authenticator:

  • Launch the Yubico Authenticator application on your device.

3. Insert Your YubiKey:

  • Plug your YubiKey into a USB port (for desktop) or use an NFC reader (for mobile devices, if your YubiKey supports NFC).

4. Identify Your YubiKey:

  • The application will detect your YubiKey and display your firmware version in the Home tab.

By following these steps, you can easily find the firmware version of your YubiKey!

Please note that YubiKey does not allow firmware updates. You must purchase a new YubiKey if your device is not firmware version 5.5 or higher. 

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