Root [T-Mobile] right link for 4.1.1

[InGearX]

I have 4.1.2 says baseband T999LUVUAMB7

I want to downgrade to 4.1.1 to unlock sim

help me please - I'm a bit new to this:

where can I get the correct 4.1.1? I looked on
Galaxy S3 Odin Stock Firmware (USA and Canada) - Androidayos

but I'm confused

I don't see 4.1.1 for my SGH-T999L (T-Mobile)

and after I unlock the sim what should I upgrade to? 4.3? or what? why?

thank you so much!

 

[Rukbat]

I don't see 4.1.1 for my SGH-T999L (T-Mobile)

SamMobile doesn't have it either. It could have been some interim small bug fix. And (no guarantee here, just a thought), flashing he latest 4.1.1 might work. (It might also brick your phone.)

and after I unlock the sim what should I upgrade to? 4.3? or what? why?

4.3? On an S3? After the thousands of bug reports? 4.2.anything. Or just wait for 4.4, wait a few weeks to see who screams how loud and, if they got it right this time, accept the 4.4 update. (I won't even think about it until maybe May or June - I want a few months for the screams to start.)

 

[InGearX]

SamMobile doesn't have it either. It could have been some interim small bug fix. And (no guarantee here, just a thought), flashing he latest 4.1.1 might work. (It might also brick your phone.)

4.3? On an S3? After the thousands of bug reports? 4.2.anything. Or just wait for 4.4, wait a few weeks to see who screams how loud and, if they got it right this time, accept the 4.4 update. (I won't even think about it until maybe May or June - I want a few months for the screams to start.)

thanks good advice

I'll just buy the code for $27

 

[GTWalling]

You should not have to pay for the Unlock code. If you qualify with T-Mobile they will give it to you Free.
SIM Unlock your phone | T-Mobile Support

 

[jhawkkw]

Plus depending on when you bought the phone, it may be illegal to unlock it on your own without T-Mobile's consent.

 

[krazybingolady]

SamMobile doesn't have it either. It could have been some interim small bug fix. And (no guarantee here, just a thought), flashing he latest 4.1.1 might work. (It might also brick your phone.)

I am having this same issue, except I am with T-Mobile through Walmart's FamilyPlan and I am trying to flash the stock firmware to just fix my "stuck on Samsung Logo issue"....cant find it anywhere...

http://androidforums.com/threads/samsung-gs3-t-mobile-stuck-on-samsung-logo-t999l.942036/