PSA For those with FRP Locked Surface Duo 1's (Working Bypass for Android 12)
This is a small quick guide I used not even an hour ago to unbrick mine from the dreaded frp lock that has turned a ton of these phones into paper weights.
Step One: Get into a web browser. You can do this by viewing terms and service and clicking on pretty much any link that takes you to a web browser. From there get to any frp bypss site like https://gsmneofrp.net/en/
Step Two: Once you are in virtually any frp bypass site click on the button there that takes you to screen lock set. Do pin and repeatedly input any 4 digit pin of your choice like 1111 or whatever. It will crash after confirm but just keep doing it. (It took 20 attempts for me) Eventually it will let you though and you can setup as normal.
Hurrah you can now use your awesome two screen phone! If you try this and it does not work for your phone please leave a comment so people can keep searching for bypass methods for these phones.