If you want to check that your written recovery phrase backup leads to the correct PIN-saved wallet, use the Temporary Signer feature to login. This allows you to login with a recovery phrase without overwriting the wallet currently saved on your Blockstream Jade.
1.
Unlock the Jade with your PIN and take note of your 8-character fingerprint in the bottom right corner of the screen (e.g. 8D688EA0).
2.
Log out of the current session or reboot your Jade, then choose Options from the home screen.
3.
Choose Temporary Signer and make sure to read the warning to understand that you are proceeding with a temporary wallet.
Warning: Jade will forget this wallet after turning the device off. Make sure to keep a backup of this recovery phrase to access any funds you send to the wallet.
4.
Select the length of your recovery phrase to type it in manually. If your wallet also included a passphrase, make sure that you are prompted to enter one. Then, manually enter your seed phrase in the correct order.
5.
After completing this, choose between USB, Bluetooth, or QR, then connect your Blockstream Jade to a companion app. You will be temporarily logged into your wallet and this recovery phrase will only be available until Jade turns off.
6.
Notice the 8-character fingerprint displayed in the bottom right corner of the screen. If it matches the same fingerprint shown when unlocking with PIN, then your recovery phrase and PIN-saved wallet are the same.