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      How do I perform a firmware update on my Coldcard?

      Update your Coldcard for the latest updates and security improvements.

      Performing routine firmware updates on your devices can provide new features and added security to your hardware wallets. For the latest changes and news regarding firmware updates, visit the manufacturers' website for Coldcard. 

      Video guide

      Watch this short video for a quick run-through of how to update the firmware on your Coldcard. Below, you'll find complete written instructions.

      What you'll need

      To update the firmware of your Coldcard, you'll need to prepare the following:

      • Your Coldcard hardware wallet and a power source
      • A PC or Mac with an SD card slot
      • A MicroSD card
      • Optional: A MicroSD-to-SD card adapter or cable

      Note: If you prefer to use your Coldcard with a direct cable connection rather than a MicroSD card (not available on older models), please review our instructions on How to use your Coldcard with a USB Cord in this article.

      How to check current firmware on your device

      1. In your Coldcard main menu, navigate the Advanced/Tools menu after entering your PIN.
      2. Scroll and select Upgrade Firmware, then Show Version.
      3. Compare this version against the latest version on Coldcard's website.

      How to update the firmware of your device

      1. Unlock your Coldcard with your PIN.
      2. Insert your microSD card into your computer. 
      3. Navigate to https://coldcard.com/docs/upgrade.
      4. Within the box at the top of the website, click on the hyperlinked firmware version for your specific device (You are looking for this: For [model]: v#.#.# for [model] followed by the release date). The download should start automatically.
      5. On your computer, locate the downloaded .dfu firmware file. 
      6. Drag and drop this file onto your microSD card.
      7. M the microSD card into your Coldcard. 
      8. From the main menu of your Coldcard, scroll down to Advanced/Tools and select Upgrade Firmware.
      9. Select From MicroSD and choose the new firmware file.
      10. Confirm you're sure by using the checkmark or Enter keys.

      Congratulations! Your Coldcard will flash green and restart with the new firmware installed. You will need to re-enter your PIN to access your device.