The Indian version of the Galaxy S3 has just received an official Android 4.1.1 Jelly Bean update. The update is available via OTA and also with Samsung Kies (How to update using Kies). The official stock Jelly Bean update for India Galaxy S3 has the following description.
Product Code: GT-I9300RWDINU
Base Firmware: I9300XXDLK1(4.1.1)
Build Date: 08-11-2012
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If you want to manually update your Galaxy S III you can do it via Odin (How to install an official update with Odin).
The difference between INU and INS is that INU is the unbranded Indian ROM and INS is the branded ROM. Although India doesn’t have network bonding so it doesn’t make a difference what version you use.
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