Root [MetroPCS/GSM] how to downgrade from 4.3 to 4.1.1

[awaraphanroid]

I have a METROPCS galaxy 3 running jelly bean 4.3
I want to go back to 4.1.1..is this possible ????

model...SGHT999N
android version...4.3
baseband ...T999NUVUBNC1

 

[Hus]

...This is the LG Optimus F6 forum.......

This is the the best I can do for you

http://androidforums.com/metropcs-gsm-galaxy-s3-all-things-root/

 

[breadnatty08]

^ Moved to said forum.
Welcome to AF, Awaraphanroid!