Okay so I have a samsung s3. It's been updated to 4.3 but I want to downgrade it to 4.1.1 or 4.1.2 so I can unlock the carrier. I did some research and i found out I'd have to use ODIN. I got the right firmware. I put the firmware file in PDA section and I put my phone in download mode. Auto-Reboot is not clicked. Each time I run it it says
<ID:0/005> DO NOT TURN OFF TARGET!!
<ID:0/005> Get PIT for mapping..
<ID:0/005> Firmware update start..
<ID:0/005> RQT_CLOSE !!
<ID:0/005> RES OK !!
<ID:0/005> Remain Port .... 0
<OSM> All threads completed. (succeed 1 / failed 0)