Developers guide:Deterministic firmware build

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Trezor Wiki/Developer/Developers guide/ Deterministic firmware build


We want to invite the wider community to participate in the verification of the firmware built by SatoshiLabs. To do this, one has to check the source code of the particular tag and compare the fingerprints of the built firmware with the fingerprints of the official firmware.

Trezor One firmware[edit]

  1. clone the sources using git clone --recursive https://github.com/trezor/trezor-firmware.git
  2. select the tag you want to build, e.g., git checkout legacy/v1.9.0
  3. run ./build-docker.sh legacy/v1.9.0 - you need to have Docker installed for this to work
  4. download the official firmware from https://wallet.trezor.io/data/firmware/1/trezor-1.9.0.bin

The firmware headers have changed in firmware 1.8.0, so if you are building firmware >= 1.8.0 you need to strip those. You can download the official firmware and then run:

tail -c +1280 trezor-1.9.0.bin | sha256sum

tail -c +1024 trezor-1.9.0-your-build.bin | sha256sum

Those two hashes should equal. See this issue for more details.

Trezor Model T firmware[edit]

  1. clone the sources using git clone --recursive https://github.com/trezor/trezor-firmware.git
  2. select the tag you want to build, e.g., git checkout core/v2.3.0
  3. run ./build-docker.sh core/v2.3.0 you need to have Docker installed for this to work
  4. compare the fingerprint computed via the command above with fingerprint in releases.json
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