Update T-Mobile Galaxy S3 to UVDMD5 Android 4.1.2 Official

The carrier released UVDMD5 Android 4.1.2 Jelly Bean
for Galaxy S3 T-Mobile is here to be updated. Since the ROM update will
be delivered in phases, hence not all the Galaxy S3 users will receive
the Android JB 4.1.2 UVDMD5 firmware
at the same time. Be patient and you would get it soonest! If not, then
follow this guide to manually update your Samsung Galaxy S3 to the
latest update.

You can update your Samsung Galaxy S3 via OTA and in case, you have
got a rooted T-Mobile SGS3, then follow this guide to manually update
the firmware on your smartphone.

Some prerequisites to update T-Mobile Galaxy S3 to UVDMD5 Android 4.1.2:

How to update T-Mobile Galaxy S3 to UVDMD5 Android 4.1.2 official firmware:

• Extract and install Odin on your computer.
• Switch your Galaxy S3 off and boot it in Download mode: press and hold Volume Up, Power and Home buttons together. When connected successfully, you will get a message in Odin saying “Added!!”. (In case you don’t get it, try another USB port. If that doesn’t help either, then re-install USB drivers).
• In Odin make sure that the Auto Reboot and F. Reset Time check boxes are the only options checked and nothing else is.
• Click on PDA on Odin, select the update zip file and hit the Start button.
• When installation is successfully completed, on Odin ID:COM will turn green.
• SGS3 will restart automatically and you can disconnect your device from PC.