First of all this is the wrong forum for that, this forum is dedicated for CM10 build for this tab, this is a development forum, check the guidelines for forums.
Second, only official update for this tab is to andro 2.3 gingerbread, further releases are only unofficial.
Third, if your carrier didn't release the update, then the only thing you can do for upgrading is to root your device and install custom roms.
Be aware that rooting your device will most likely void your warranty and nobody else than you will be held responsible in case you brick your SGT.
For info on rooting and installing custom roms check for the appropriate forums or at the XDA Developers wiki.
last question sir, before i end with this. is it ok If i flash through odin an update from different country? even though it is locked from a carrier?