Originally Posted by thandlovsky
I've tried everything. A different cable, a different port, a different computer. I've flashed different types of different roms and then run it. When I get a chace, I am going to try and find a nandroid backup of ATT 4.4.4 with the 3.xxx firmware and then try it again
But did you try a factory reset as I suggested? Not everyone does this when flashing ROMs, so its ot clear from your description whether you did a fully wipe or not.
Did you try both the 3.42 and 4.28 RUUs? Based on your details, either should work on your phone.
And your bootloader is RELOCKED? It probably would not have gotten to the point of telling you low battery if it was UNLOCKED. But its always good to check the "easy stuff" before digging deeper.