I purchased 41 of them as part of a Misc. auction pallet. They are each locked with an admin password....unfortunately the company sealed its lips on any type of tech solutions and the school I purchased them from no long has those files on record. At this point i'm thinking about scrapping them for parts....However I decided to give it that Old college try and I was wondering if there is a generic 2.1 -> 2.2 android update that would be safe to use on multiple tablet systems....Sort of a basic OS reinstall. Any thoughts?