I've searched for a discussion thread regarding the issue explained in the title but had no success. I hope I'm not asking an old question: My story: Rooted droid1 using motocache1's instructions on sticky - FRG22D. Wanted FRG83D, so unrooted using jntdroid's instruction - Hate corporate sync problems with previous versions. Being impatient, decided to push FRG83D and was worried that by doing that, I hadn't gotten all of the updates pushed OTA. So, I replaced upload.zip with a5e329b00288.signed-voles-ota-50454.zip renamed upload.zip and installed in recovery mode. This failed and installation was aborted (I can't remember the error message at present). After many attempts, decided to restore the most recent nandroid backup, hoping it would work - VOILA, rooted FRG22D. Unrooted and waited, got my FRG83D OTA update, then rooted again. My question, and it's a stupid question, is whether FRG83D updated droids (unrooted) could be rolled back to FRG22D? I have a friend who sounds like she has a defective OS installed OTA which sucked prior to the FRG83D and continues to suck afterwards. I thought that it would be possilbe to install this proven copy of FRG22D then have her do the OTA update. Did my problems with installing a5e329b00288.signed-voles-ota-50454.zip occur because this is a normal problem trying to roll back an update or for some other reasons. Thanks guys, and keep up the good work.