from what i've heard, which isn't much, you might be able to put a recovery/update/downgraded version on a sd card zipped & labeled 'update.zip' -must be in /sdcard/ directory. put the card in the slot before powering on. then do the power & volume to get it to install . hope that helps. if you find that you are missing some files let me know. i have a A100. good luck!