You will need to use ROM Manager to flash the latest ClockworkMod Recovery (make sure to choose Galaxy S3 T-Mobile!!!) then install it either by manually or using ROM Manager.
*Note – This ROM IS compatible also with AT&T Galaxy S3 SGH-I747 (also any Canadian models starting with that model number) but you will lose 4G LTE.
Let me know how this ROM works for you!
YOU HAVE TO INSTALL ROM then Gapps!!!
Credits – XDA
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