cryptoadvance/specter-diy v1.5.4

on GitHub

Release notes:

• Add export of all xpubs for n-th account to SD card in json (ColdCard format) and plaintext (Specter format)
• Add back button on PIN code screen when it is possible
• Make thresh desriptor working with k = 1 and k = n
• Actually fix a bug when parsing non_witness_utxo in psbt that has witness

If you have firmware v1.4.0 or later you need to copy specter_upgrade_v1.5.4.bin to the SD card and insert it into the device. The bootloader will check the signatures of the upgrade file and update firmware.

If your discovery board is empty or you have very old firmware (below 1.4.0) - just copy-paste initial_firmware_v1.5.4.bin file to your board when it's connected over miniUSB.

If you want to use self-signed bootloader and firmware check out the instructions in the bootloader repo

sha256.signed.txt file contains sha256 hashes of the firmware binary files and signed with @stepansnigirev's GPG key.
You can get the public key here: https://stepansnigirev.com/ss-specter-release.asc.
It is also available via keys.gnupg.net or keys.openpgp.org.
Fingerprint of the key is 6F16 E354 F833 93D6 E52E C25F 36ED 357A B24B 915F, short id: 36ed357ab24b915f