HardCorePawn:TG09: You put post a link so I can download the Telecom Firmware so I can flash mine please.
I think you misunderstood me... I'm not saying that there is a Telecom 4.1.2. I'm saying you can use the overseas firmwares if you want... I'd just suggest flashing an i9100T "radio" (aka modem) afterwards... as I've found the T-model to be a bit funny using the standard i9100 radios.
These 2 threads are a good starting place:
Modem Collection: http://forum.xda-developers.com/showthread.php?t=1131950
Personally... I am using DOLP4 (and the associated RIL files), which I extracted myself from an official Telecom Firmware from the sammobile site...
FYI, I am a dev on SlimRom, so I'm already on JB4.2.1... 4.1.2 is kinda old news ;)
Cheers for the info, appreciated. Still learning all about modem etc..