Very feature-rich release! Miniscript support, watch only wallets, wallets with private keys, SD card support, SIGHASH support and more!
If your discovery board is empty or you have very old firmware (below 1.4.0) - just copy-paste initial_firmware_v1.5.0.bin file to your board when it's connected over miniUSB.
If you have firmware v1.4.0 or later you need to copy specter_upgrade_v1.5.0.bin to the SD card and insert it into the device. The bootloader will check the signatures of the upgrade file and update firmware.
IMPORTANT: 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
Release notes:
- Full descriptor support including Miniscript
- Custom SIGHASH flags (with warnings etc)
- Full SD card support (Specter-DIY wallet files and psbt files for txs signing, no support for ColdCard-format yet)
- Watch-only wallets (if your private keys are at home but you need to verify addresses)
- Wallets with private keys - for whatever reason you want to do that.
- Wallets can display their policy and cosigners at any time now
- Automated testing on the simulator against Bitcoin Core (regtest)
- Minor changes and improvements
- Legacy transactions and wallets support (just because it was easy)