So my dad bought a GS3 and it shows that it's a t999 model in the settings. It's on UVDMD5 has the UVDMD5 radio as well. I was going to odin flash to the new 4.3 root 66 but it threw out an error. I looked at the phone and in download mode it shows it's a i-747 so I'm super confused right now. I also have an s3 myself and when I remove the battery and check my phone it shows model: sgh-t999 and also shows t999 in download mode as well. On the new phone my dad purchased it shows model: GT-T999 where the battery goes. So yeah I'm pretty confused. I managed to flash the tmo twrp and flashed superuser zip and rooted it sucessfully but I wanted to update it to 4.3 but now I'm not even sure what firmware to flash