Yo if you guys can't use google to find the xap's on xda then you definitely aren't competent enough to be putting Windows 10 on this device. No, you cannot do a hard reset and expect normal functionality; read the damn thread. If you want to change your values back to SM-W750V, deploy a registry editor and do it. Windows 10 is NOT built for our phone and if you continue to follow guides without understanding and doing proper research you will break your phone eventually. If you want Windows 10 on your phone and you don't want to risk anything, or you don't want to research, and you want full functionality and the ability to easily restore your device to a functioning state, GET A PHONE THAT OFFICIALLY SUPPORTS THE INSIDER PROGRAM.