Hi. I'll be soon getting S3, probably with 4.1 firmware. I woud like to flash 4.3 from Samsung or CM 11 onto it. Are there any custom roms on 4.3 that don't flash new bootloader (or just knox)? And is there a way back if you already flashed new bootloader and knox? I know about workarounds for root etc., but I know too that it still causes problems on custom roms? Thanks.