COLDCARD Mk4 v5.4 & Q v1.3: XOR from Seed Vault, Optimizations & More

- This release brings the ability to restore geographically distributed SeedXOR without physically bringing the parts together, improved side channel protection, speed improvements, and many bug fixes.

- COLDCARD Q now supports importing Seed XOR by scanning SeedQR parts, ability to input backup password via QR scan, and BBQR file sharing of arbitrary files. Create an Airgapped Multisig Wallet now works with BBQRs, in addition to MicroSD cards.

https://www.nobsbitcoin.com/coldcard-mk4-v5-4-q-v1-3/