I decided thet I want to buy a pixel and to install grapheneos on it. Could I mess everything up following this guide? My biggest fears are not being able to install the os after nuking the default, and also buying a non-OEM-unlocked pixel by mistake.
You don’t even need do anything complex. Just get an unlocked pixel, upgrade it, and connect it to the Web USB installer on the Graphene page. Let them take care of it