hi, i have a S3 i747 with OTA Update (UCUEMJB) and i rooted it using twrp recovery, but by accident i wiped internal storage, now it said no os, what can i do for repair it?
thanks for answer, i downloaded the MJ2 rom and do it, it is working 100% but now i have a baseband MJB and a build MJ2, i only flashed the rom, no modem, no boatloader
You can try using mobile Odin to flash a stock AT&T ROM and update from there. AT&T never released a complete stock 4.3 ROM, only an update.
Any particular reason you want to go back to stock? It's unlikely you will have a warranty from Samsung since you flashed a custom recovery on a 4.3 ROM which would have tripped the knox counter.