So I have come into possession of about 8 of these things ( friend works at sprint) and I have been messing around with them Got one completely rooted everything works fine even USB mass storage. It sees the internal car and the external card on my computer but the rotation doesn't work (had to download an app to fix). But none of the others have been able to plug up to the computer as a mass storage device. I think I ran in the developer page that this was missing from this Tablet. Is this true?