Preperation：
1. Cobo Vault Essential or Pro upgraded to firmware version V2.3.1（BTC-Only）or later version
2. Computer/RasberryPi/Server Environment with BTCPayServer installed/enabled
3. MicroSD card (FAT32 format with capacity NOT exceeding 32GB)
Pairing the Cobo Vault with BTCPayServer
1. In the Cobo Vault hardware wallet, go to [Settings], touch [Watch-Only Wallet], select BTCPay Server], then touch [Next].
2. Touch [Display QR Code].
3. Run BTCPayServer on your computer, click [STORES > Create a new store]. Set the name of the new store and click [Create].
4. Click [Setup] under "Wallet - BTC". Click [Import from...] and select [a QR Code].
5. Scan the QR code shown on the Cobo Vault device and click [Submit > Confirm].
6. Select [WALLETS] tab and check the paired watch-only wallet.
Tips: If your device has issues with the camera, you can use a microSD card to create a BTCPay Server watch-only wallet.
1) Insert the microSD card into the Cobo Vault device. Go to [Settings], touch [Watch-Only Wallet], select BTCPay Server], then touch [Next > Display QR Code].
2) Touch [touch here to export the file with microSD > Export]. The file has been saved in the microSD card.
3) Take out the microSD card out from the Cobo Vault and insert into your device.
4) Run BTCPayServer on your instance, click [STORES > Create a new store]. Set the name of the new store and click [Create].
5) Click [Setup] under "Wallet - BTC". Click [Import from...] and select [a wallet file(Electrum, Wasabi, Cobo Vault, Coldcard].
6) Click [Choose File]. Select the txt file exported from the Cobo Vault. Click [Submit > Confirm].
7) Select the [WALLETS] tab and check the paired watch-only wallet.
And you are good to go!
