A while ago tablet bricked, I had installed universal androot, root explorer and busybox (From Amazon App Market) I wasn't sure why, but it wasn't really bricked, but I have to reflash it via the OTG port. Since then I upgraded to the Beta4 and all was fine, rooted with universal androot, and root explorer. But today I installed BusyBox, seemed to go OK. Turned it off and back on, would not come up. Same as before InfoTmic screen, they Sylvania, then it goes black.