The community has spoken, and once again, we deliver! We are thrilled to announce that the stable version of our new Bitcoin-only firmware is now available to download for both Trezor One and Trezor Model T. After the initial testing of the Bitcoin-only firmware done by our beta testers, we’re proud to now release this firmware to our stable version.

From now on, we will be producing four different versions of firmware — regular (full altcoin support + U2F/WebAuthn) and Bitcoin-only, for both Trezor One and Model T. By default all Trezor devices come with a regular firmware and you can optionally update to the Bitcoin-only firmware.

We have created a customized version of both our firmware and Wallet designed for everyone who supports the idea of Bitcoin. Every Bitcoin maximalist can now enjoy the Wallet interface with nothing else but Bitcoin.

How to install Bitcoin-only firmware

Before you jump straight into installation, we recommend testing your recovery seed in a dry-run recovery. It’s also essential to note that after installing Bitcoin-only firmware, all your other coins will not be visible in the Wallet interface — but don’t worry! The private keys to your altcoins remain protected within your Trezor. The regular Trezor firmware is required to access your altcoins. You can swap between the regular firmware and Bitcoin-only firmware as many times as you like.

There are two ways of installing the Bitcoin-only firmware. You can use either Trezor Wallet or trezorctl(advanced users). This process is also described on Trezor Wiki.

You will need:

Trezor Model T running version 2.1.0 or newer, or Trezor One

or newer, or Trezor One Access to Trezor Wallet or trezorctl

The correct firmware installation file for your device — Trezor One or Trezor Model T

Installation process using Trezor Wallet:

Visit https://wallet.trezor.io/ and connect your Trezor. If you are using Trezor Model T and your firmware version is lower than 2.1.0, upgrade to the latest offered version via web-wallet first! Type “custom_firmware” after your Trezor device ID in the URL. Download the firmware installation file for your device (Trezor One, Model T) and click on “Choose File” to upload the firmware file. Trezor Wallet will then prompt you to initiate the firmware update process. Follow the instructions to load the firmware file on the device.

Image of the URL address in the second step.

Installation process using trezorctl:

Download the bitcoin-only firmware for your device. Put your device into bootloader mode and confirm a connection with a host on device. Launch Terminal and go to the folder with the firmware file. If you have a Model T, update the firmware by pasting

“trezorctl firmware-update -f trezor-2.1.5-bitcoinonly.bin” into the Terminal window and press enter. Confirm installation on the device.

If you have a Trezor One, update the firmware by pasting

“trezorctl firmware-update -f trezor-1.8.3-bitcoinonly.bin” into the Terminal and press enter. Confirm on the device. Create a new wallet via https://wallet.trezor.io/

We believe that by dedicating resources to our Bitcoin-only firmware, we will be able to further advance the innovation in the field of Bitcoin security and increase the pace of mass adoption.