TREZOR firmware http://bitcointrezor.com/ How to build Trezor firmware? ============================= 1. Install Docker (docker.com) 2. git clone git@github.com:trezor/trezor-mcu.git 3. cd trezor-mcu 4. ./firmware-docker-build.sh This generates trezor.bin in current directory and prints sha256 fingerprint on last line of build log. How to get sha256 fingerprint of firmware signed and distributed by SatoshiLabs? ================================================================================ 1. Pick proper version of firmware binary listed on https://mytrezor.com/data/firmware/releases.json 2. Download it: wget -O trezor.signed.bin.hex https://mytrezor.com/data/firmware/trezor-1.1.0.bin.hex 3. xxd -r -p trezor.signed.bin.hex trezor.signed.bin 4. ./firmware-fingerprint.sh trezor.signed.bin Step 4 should produce the same sha256 fingerprint like your local build. The reasoning behind "firmware-fingerprint.sh" is that signed firmware has special header holding signatures themselves, which must be removed before calculating fingerprint.