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Can't Unlock my S4 MDL AT&T i337 in 4.4.2 please

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By TheMechanics, Junior Member on 14th April 2014, 03:06 AM
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23rd April 2014, 06:47 AM |#11  
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So what's the solution?
I have been reading so much about this that I dont even know where to begin ... I hope someone could do us noobs a favor and give us a step by step procedure of unlocking S4 on android version 4.4.2 ...
 
 
24th April 2014, 12:18 AM |#12  
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Quote:
Originally Posted by Batsie

I have been reading so much about this that I dont even know where to begin ... I hope someone could do us noobs a favor and give us a step by step procedure of unlocking S4 on android version 4.4.2 ...

In reply to you and @nadirghazi
If you want to unlock it on 4.4.2 then use the downgrade method, root, and use the "possible unlock for MK2" thread. The OP in this thread meant to put 4.2.2, which is what MDL is, so those instructions don't work.
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17th May 2014, 01:07 PM |#13  
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Solutions Unlock I337 4.42 NB1
Quote:
Originally Posted by TheMechanics

Hi everybody here, well, i purchase my S4 AT&T model i337, "the baseband finish in MDL" from a seller in ebay, the phone is locked, and comes with cyanogenmod 4.4.2 kitkat, i cannot access at the SERVICE MODE,

I have tried this method

*#27663368378#
*#0011#
*#197328640#* but nothing happens,

And the RegionLockAway does not work, it says "could not locate CSC data"

I dont know what to do, my phone is rooted... i read a lot of threads of information but nothing works for me...

i'm from Argentina, thanks everybody...

Please if someone knows how to unlock please comment in this thread!

I337 4.42 NB1 update OTA
1.downgrade Basebank MDL (wifi not working)
2.use SPT Box unlock---> done
3.use Odin flash Baseband NB1---->(wifi working)
4.Unlock done I337 4.42 NB1 successfull
11th June 2014, 02:29 PM |#14  
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Another noob here. Is there any way to keep all of your phone data and settings when you downgrade?

My Galaxy S4 (SGH-I337) is on NC1, and I already downgraded once to root it (and re upgraded afterwards). It's quite troublesome to redownload all of my apps and change all of my settings again, so I'd like to know if it's avoidable.

Also if someone could link me to the baseband files, that would be great.
Last edited by YamiGG; 11th June 2014 at 02:43 PM. Reason: clarification
28th August 2014, 10:16 PM |#15  
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can also try this method
worked for me

http://forum.xda-developers.com/gala...1-nc1-t2852979
7th September 2014, 07:48 AM |#16  
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Quote:
Originally Posted by TheMechanics

You are in stock rom? i need more details of your phone!

Please help, I am on i337 and can get to Debug screen but there is no 6th option.... I am on tmobile with a poopie phone and want to use my old s4 but cannot unlock it and i have NOOO idea how to root.
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