I've been running 4.2.2, rooted, SafeStrap'd and SuperSU. Today, I went back to stock ROM (I switch back and forth, between stock and Hyperdrive), I forgot I had rebooted during a forced update for 4.3. Well, update finished downloading, and automatically went to install, of course, with my phone, it always fails @ 29-30%. Phone went to start back up, went thru the SafeStrap and stayed at the AT&T logo. Pulled battery and went to SS, and activated Slot 2 (Hyperdrive). Phone just boot looped thru the SS and then shut off and so on and so forth. So I tried to do a factory reset, and that failed. So I tried to restore backup, in SS and that failed. I'm thinking that even though the 4.3 update failed, it somehow put enough of info, into the bootloader, to change it to a 4.3. I'm going to try to ABD MF3, then MI2 and if that fails, ML2.
Just wanted to give you a heads up....seems AT&T is hellbent on pushing this locked down update through.
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