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Firmware Update via USB or MicroSD Card

Firmware updates are important as they bring new features, bug fixes, and support for new blockchains. You can update Keystone firmware via USB or MicroSD Card.

Update via MicroSD card

What you'll need

  1. Keystone 3 Pro
  2. MicroSD card and MicroSD card reader (MicroSD cards with a capacity of 32GB or 64GB are recommended)
  3. Computer

Steps

  1. Check Battery: Make sure your Keystone wallet has at least 40% battery charge.

  2. Format MicroSD Card: MicroSD Card (FAT32 format, no larger than 512GB). How to format a MicroSD card to FAT32？

  3. Get Firmware: Please visit the official Keystone website to download the latest firmware “keystone3.bin”, then copy it to the root directory of your MicroSD card.

    tip

    Ensure the SD card holds only keystone3.bin, no other files. If the downloaded file name is automatically generated with a suffix like “keystone3(1).bin”, please rename it to “keystone3.bin” and do not change it to any other name.

  1. Insert MicroSD Card: Place the MicroSD card with the firmware into your Keystone wallet.

  2. Start Update: Tap the [···] icon at the top right of the main page > [Device Settings] > [System Settings] > [About] > [Firmware Update] > [Via MicroSD Card].

Important Notes​

  • Firmware Version 2.4.0 is a critical security update released in April 2026. All devices with firmware versions lower than 2.4.0 must complete this Security Upgrade first before proceeding to install the latest firmware.

    • If the current firmware version is below 2.0.0: select [Firmware 2.4.0] on the left to download and install the update.

    • If the current firmware version is 2.0.0 or above: select [Firmware 2.4.0] on the right to download and install the update.

Update via USB Cable

What you'll need

  1. Keystone 3 Pro
  2. USB Cable
  3. Computer

Steps

  1. If your firmware version is below 1.0.4, you will need to perform the initial update using a MicroSD card before you can proceed with USB updates.

  2. Check Battery: Ensure your Keystone wallet has at least 40% battery charge.

  3. Go to the official Firmware Update page.

  4. On Keystone: Tap the [···] icon at the top right of the main page > [Device Settings] > [System Settings] > [About] > [Firmware Update]. Tap on [via USB] and use the USB cable to connect your Keystone wallet to your computer. Tap [Approve] to grant your Keystone wallet USB access, as it might otherwise only allow charging.

  5. On the official firmware update page, follow the provided instructions to update.