With firmware versions V1.3.0 (BTC-Only), PSBT (Partially Signed Bitcoin Transaction Format, BIP 174) multi-signature wallets are now available on the Cobo Vault. You will be able to create in Electrum Wallet any x out of y (of maximum 15 signing signature) multi-signature wallet. Such wallets require signing from all enrolled devices that participate in the multisig setup.
Multi-signature wallets can be beneficial in certain cases, especially when signing keys and/or devices are stored in separate physical locations.
How to use 2/2 PSBT Multi-signature with Cobo Vault + Coldcard + Electrum 4.0
As Electrum has released their 4.0 version which has implemented PSBT (BIP 174) as default protocol, this firmware upgrade also makes Cobo Vault compatible with Electrum 4.0. Earlier firmware versions are not compatible with Electrum 4.0. We also updated the tutorial for Electrum compatibility.
