I have the SCH-I535 and I took the OTA and I'm running 4.3 with a locked bootloader. I've downloaded safestrap and have successfully got a recovery and even flashed the Alliance Rom and used it for over a month. I decided to switch over and try the M.O.A.R rom and everything seemed to go smoothly. I flashed the appropriate modem that the download instructions told me to use and then flashed the rom, all after doing a clean wipe first of course. But after I rebooted I now have the dreaded System software not authorized message. Has anybody figured out how to fix this without going back to stock unrooted?