Not sure if this is the correct place for this, as there isn't a dedicated Cat S22 forum.Instructions on restoring stock on the Cat S22.Note, you perform this at your own risk, there is a chance of bricking your phone if you do something wrong.In my case my phone was already bricked with only fastboot available, so I didn't have much to lose.Thanks to @iksw for help with this, see this post for more info...Read more