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[How-To] Run T-Mobile 4.4.4(NK2) on your ATT I337 (12/8/2014)

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By muniz_ri, Senior Member on 12th September 2014, 06:57 AM
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**You can begin the following process from any build/ROM but you must have both root and Safestrap installed before proceeding**

1. Place the T-Mobile_4.4.4(NK2)_Stock_Rooted_ROM onto your ext-sdcard.
2. From Safestrap recovery press "Backup" and backup your User Data.
3. Once complete, from the main menu press "Wipe" then "Advanced Wipe" and wipe everything but your ext-sdcard.
4. From the main menu press "Install," then select and install the I337UCUFNJ4_100%_Stock_Rooted_ROM.
5. Once complete, press "Restore" and restore your User Data.
6. From the main menu press "Reboot," then "System." Done!

After following the above process your phone will pause on the T-Mobile splash screen for about 2 minutes before rebooting.

Notes:
1. The above process will not affect your User Data or Knox Warranty Flag.
2. This process will update your modem, non-hlos, stock recovery, and bootloader to NJ4(4.4.4) which are required for the T-Mobile ROM(NK2) to run correctly on the I337.
3. If you do not already have root access you must first flash the I337UCUFNB1_Rootable_Full_Odin.tar using Odin's PDA slot (AP in Odin v3.09+), root using Towelroot, install Safestrap, then proceed with the above instructions.

Credits:
benwaffle - for his flashboot script allowing Safestrap to flash the kernel(built into the ROM).
Last edited by muniz_ri; 20th April 2015 at 11:22 PM.
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12th September 2014, 10:31 PM |#2  
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Will I have to update to nc1 or do you know of this works on nb1?
12th September 2014, 10:34 PM |#3  
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Quote:
Originally Posted by Asadullah

Will I have to update to nc1 or do you know of this works on nb1?

Haven't tested on nb1 but the nc1 and nb1 kernels are different so that may or may not cause problems.
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13th September 2014, 01:36 AM |#4  
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Does this use the new Google dialer? Or same touch wiz one?
13th September 2014, 01:49 AM |#5  
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Quote:
Originally Posted by bennyboy78

Does this use the new Google dialer? Or same touch wiz one?

This is stock tchwz and a preview of our next update.
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13th September 2014, 02:09 AM |#6  
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Will this work with the older bootloaders? MDL.. Figured I would ask.
What would I remove since I do not use safestrap to allow it to flash via TWRP?
I may decide to download the T-Mobile version and see what I need to make it work (even partially if need be) for fun sake. Unless it would be easier with your version to convert it from safestrap version. Thanks for your time on this.
13th September 2014, 04:06 AM |#7  
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@muniz_ri
Another Amazing Work Bud...

[IMG]i.imgur.com/ay7BXoF.png[/IMG]
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13th September 2014, 04:41 AM |#8  
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Quote:
Originally Posted by muniz_ri

I put this together for myself from the T-Mobile GS4 OTA released yesterday to preview the upcoming 4.4.4 update. Just sharing if any Safestrap users would like to try it.

Everything seems to work on the I337 (I'm on NC1 bootloader, kernel, and modem) except you have to re-enter the wifi password upon reboots. I removed the T-mobile bloatware and inserted the I337 NC1 modules and rooted, otherwise it is stock. No UI changes or noticeable speed improvements, as expected only bug fixes:

Here it is: M919_NH7_SafestrapROM_for_I337.zip

1. Use Safestrap's backup function to backup your current system and user data.
2. Place the M919_NH7_SafestrapROM_for_I337.zip in the root of your ext sdcard.
3. Boot into Safestrap recovery, perform an "Advanced Wipe", and wipe everything except ext sdcard.
4. Flash the ROM zip in the "Stock Slot." Once complete press "Reboot." Done!

To fix the WiFi password problem goto build.prop and and change ro.securestorge.support=true to false
Last edited by parkerj7uc; 13th September 2014 at 04:44 AM.
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13th September 2014, 04:47 AM |#9  
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Quote:
Originally Posted by parkerj7uc

To fix the WiFi password problem goto build.prop and and change ro.securestorge.support=true to false


Thanks, Brutha. I will put up a new version with this fix.
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13th September 2014, 04:49 AM |#10  
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Quote:
Originally Posted by RockRatt

Will this work with the older bootloaders? MDL.. Figured I would ask.
What would I remove since I do not use safestrap to allow it to flash via TWRP?
I may decide to download the T-Mobile version and see what I need to make it work (even partially if need be) for fun sake. Unless it would be easier with your version to convert it from safestrap version. Thanks for your time on this.

Don't know but in general the kernel, modules, and non-hlos need to match. Also, not certain on this, but I believe TWRP requires a slightly different updater script than Safestrap.
13th September 2014, 05:46 AM |#11  
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Thanks. I downloaded the one from the T-Mobile thread that is already deodexed and knoxless. Making some of my own changes to it and see how it goes. Venom let me know he was able to flash the T-Mobile version on his MDL with TWRP and it flashed and worked after making a couple small changes. Thanks again for the reply.
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