I recently found out that I have the tri-band version of the Galaxy S3, and will need a .tar/.md5 file that's flashable through Odin to reset it to factory because I really messed it up when trying to install ROMS/Modems for the Non-triband version of the phone
. The sound doesn't work, the cellular service does not work, and it will not update to 4.4.2. I do know that I recieved it with 4.4.2, so I'm guessing it still has the 4.4.2 bootloader (which I have not changed). I know it's a rare model, but if there's anyone with the right file, please post a working link to it. I have been unable to find any working links for it online by myself. Also, make sure it is for the SPH-L710T model.