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Rooted NK2 AT&T t337a w/ Tutorial

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CocaFoca

Member
Jan 7, 2014
33
30
******UPDATE FIX YOUR T337A WITH LOLIPOP FRIMWARE FILE******* I do not take credit for this file at all, all credit goes to MichaelSaya. Here is a direct quote from him "Here is the link to my Google drive with the Official Lollipop Firmware for the AT&T TAB 4, SM-T-337-A https://mega.nz/#!0Q4AXQgZ!Df-pTUo6eA80kGTrzpYCAJ0ilGbUzMYCE4nRtvume6s Place in AP slot in Odin and flash. Be aware that many have been bricked. Only root with Kingroot and when you reboot, you will lose root. Simply re-root with Kingroot and you will be fine. DO NOT REPLACE KINGROOT WITH SUPERSU!!!!! YOU WILL BRICK!!!!! But we have the firmware now so we can now play around knowing that if we mess something up, we can fix it."


I found a way to re-root the t337a with the latest OTA NK2. Not sure if I was the only one in this boat or whatever but I got bored and started experiment. First thing i did was Flash the older NF4 kernel with ODIN. Put this in the PDA slot and flash! It was successful, I downloaded Towel root, and bam! Root working again ! :) Cheers!

Tutorial:

1. Get the latest drivers to make sure everything goes smooth http://org.downloadcenter.samsung.c...NG_USB_Driver_for_Mobile_Phones_v1.5.45.0.exe
2. Get Odin if you don't have it yet: http://forum.xda-developers.com/attachment.php?attachmentid=1168421
3. Download the NF4 kernel from the attachment below
4. Go into Odin.
5. Click on PDA, search for the file you downloaded boot.tar and select it. Pic: http://i.imgur.com/XrqVPLZ.png
6. Now, put your tablet into download mode! If you don't know how to enter download mode go here: https://www.youtube.com/watch?v=dDE1oB2-nYw its the s5 but same concept.
7. Plug in your tablet and it should say something like this in message window in odin: http://i.imgur.com/uWFc4YX.png
8. Now, hit start. Let the process run. If all goes well it should say RESET! I dont know what happened to this pic lol http://i.imgur.com/AbH5qW7.png but hopefully you get the point.
9. Give the tablet a few minutes to boot. Keep it plugged in until you see PASS! http://i.imgur.com/eTuHDUl.png
10. Go get towel root. Run it. And BAM! You are rooted again :)



*** WARNING *** This doesn't work with the lolipop update. I have tried to downgrade my tablet and it did softbrick it. Do not try to downgrade your tablet/try this method if you are running lolipop 5.1.1. This only works on kitkat. HOWEVER. I have the lolipop boot.tar. Use the instructions above to unbrick your tablet (This will not give you root access. I'm going to look at it and see if I can figure something out to get root access). I have not tested this myself because mine is at a friends house BUT this should work. Cheers
 

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M

moonbutt74

Guest
I found a way to re-root the t337a with the latest OTA NK2. Not sure if I was the only one in this boat or whatever but I got bored and started experiment. First thing i did was Flash the older NF4 kernel with ODIN. Put this in the PDA slot and flash! It was successful, I downloaded Towel root, and bam! Root working again ! :) Cheers!

Download link: Below

Hi,

Neat ! so if the older kernel was compiled before towel root's october deadline [i think it was october] when that vulnerability
was closed then that would make sense. :good:
so the rom run just fine with the older kernel ?

could you post the older NF4 kernel/boot.img and modules ?

thanks
m
 

CocaFoca

Member
Jan 7, 2014
33
30
Absolutely! Heres the thing. I cant post links yet. Is there anyway i can pm itnto you and idk you set up a post? Or is there another way
 

CocaFoca

Member
Jan 7, 2014
33
30
Hi,

Neat ! so if the older kernel was compiled before towel root's october deadline [i think it was october] when that vulnerability
was closed then that would make sense. :good:
so the rom run just fine with the older kernel ?

could you post the older NF4 kernel/boot.img and modules ?

thanks
m

So I put the kernel/boot.img in a attachment. Yes everything runs very smooth. Especially after all the frozen bloatware! Anyways happy rooting :)!
Also attatched is a screenshot with me rooted/on NK2 with the NF4 kernel!
 

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moonbutt74

Guest
So I put the kernel/boot.img in a attachment. Yes everything runs very smooth. Especially after all the frozen bloatware! Anyways happy rooting :)!
Also attatched is a screenshot with me rooted/on NK2 with the NF4 kernel!

Yup that'll do it. Good deal on getting that sorted, thanks!

and to pm click on the user's name and select send private message.

be sure to reply to this message to bring your post count up x1
m
 
Last edited:

amdtabv

New member
Jan 7, 2015
1
0
YES!

I found a way to re-root the t337a with the latest OTA NK2. Not sure if I was the only one in this boat or whatever but I got bored and started experiment. First thing i did was Flash the older NF4 kernel with ODIN. Put this in the PDA slot and flash! It was successful, I downloaded Towel root, and bam! Root working again ! :) Cheers!

Download link: Below

Hey man this is just what iv been looking for, i have a sm-t337a and would love root. if you could help i would appreciate it, if you could provide a tutorial or where to get the older NF4 kernel. :good::good::good:
 

CocaFoca

Member
Jan 7, 2014
33
30
Hey man. Sorry to hear it keeps failing. Could you give me a screenshot of odin and a screenshot of the about device info should have build number etc. Will see what I can do[/QUOTE

Screen shots attached. Thanks for helping.

Yeah you indeed do have the wrong device, however if you want i can upload the NE1 kernel (first kernel for the t537a). However... i have not tested it for this device. It should be the same concept but im not 100 percent sure it will work. Do you want to at least try? Ill post it in my next reply if you are interested in giving it a go.
 

CarlDinAZ

New member
Apr 10, 2013
3
0

CocaFoca

Member
Jan 7, 2014
33
30
M

moonbutt74

Guest
Hey man. Sorry to hear it keeps failing. Could you give me a screenshot of odin and a screenshot of the about device info should have build number etc. Will see what I can do

CocaFoca,

hi, this is off-topic but, do you have a working recovery for the 337a yet? Or a lead on unlocking it?
I've alternately tried to mod safestrap and actually build it from what sources Hashcode had up
but no dice. :(

on the odin image, it may have been packed wrong,

run this script in the same directory as the boot.img

#!/bin/bash
tar -H ustar -c boot.img > boot.tar
md5sum -t boot.tar >> boot.tar
mv boot.tar boot.tar.md5

odin complains about the md5 sometimes so you can skip
the last line, it will still flash.

m
 

CocaFoca

Member
Jan 7, 2014
33
30
CocaFoca,

hi, this is off-topic but, do you have a working recovery for the 337a yet? Or a lead on unlocking it?
I've alternately tried to mod safestrap and actually build it from what sources Hashcode had up
but no dice. :(

on the odin image, it may have been packed wrong,

run this script in the same directory as the boot.img

#!/bin/bash
tar -H ustar -c boot.img > boot.tar
md5sum -t boot.tar >> boot.tar
mv boot.tar boot.tar.md5

odin complains about the md5 sometimes so you can skip
the last line, it will still flash.

m

I unfortunately do not. I do believe I know why safestrap isnt workin SElinux wont disable at all for me... Tried booting safestrap for different att phones and it woulndt stick always said not active. I believe we need to find a way to make it permissive then it will work? Tried the one on the market didnt work. I did get one to make it permissive but it reset after reboot :/ im just a newbie at this stuff but tbh I want to learn. Anyways... Im interested in this... Will look into it tomorrow
 
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moonbutt74

Guest
I unfortunately do not. I do believe I know why safestrap isnt workin SElinux wont disable at all for me... Tried booting safestrap for different att phones and it woulndt stick always said not active. I believe we need to find a way to make it permissive then it will work? Tried the one on the market didnt work. I did get one to make it permissive but it reset after reboot :/ im just a newbie at this stuff but tbh I want to learn. Anyways... Im interested in this... Will look into it tomorrow

Coca,

ok you may need selinux enabled busybox, check this thread, http://forum.xda-developers.com/and...de-busybox-snapshot-building-android-t2857650 , the OP is a good read the links are a ways down, i've tested out both versions and they seem square.
my last thought is to replace the two distinct busybox binaries in safestrap, busybox and bbx, my attempts with safestrap
end up rebooting to my actual recovery if that provides a lead. the version i chose for modding was Galaxy S4 (ATT) [JFLTEATT]

http://blog.hash-of-codes.com/downloads/safestrap/
 

insanecrane

Senior Member
Aug 31, 2012
66
25
Trenton,NJ
Hey Man. I got that boot.tar from the T537A. Follow the instructions the same way except use this boot.tar. Hope it works. If it does, I'll add it to the tutorial. Let me know how it goes! PLEASE ONLY FLASH THE FOLLOWING ATTACHMENT IF YOU HAVE THE T537A! I re named the file but somebody might not read.


I'm not sure what happened CarlDinAZ but I had the same specs on my Tab 4 I just got through an upgrade from AT&T and after following the tutorial by Coca using the boot.tar he provided for the T537A and then rooting with towelroot I can confirm that it does work for this model.

Thanks for the boot.tar and tutorial Coca!


Screenshot_2015-02-08-17-00-14.png

Screenshot_2015-02-08-16-59-09.png
 

CocaFoca

Member
Jan 7, 2014
33
30
CocaFoca,

hi, this is off-topic but, do you have a working recovery for the 337a yet? Or a lead on unlocking it?
I've alternately tried to mod safestrap and actually build it from what sources Hashcode had up
but no dice. :(

on the odin image, it may have been packed wrong,

run this script in the same directory as the boot.img

#!/bin/bash
tar -H ustar -c boot.img > boot.tar
md5sum -t boot.tar >> boot.tar
mv boot.tar boot.tar.md5

odin complains about the md5 sometimes so you can skip
the last line, it will still flash.

m

Just had a had a thought, maybe we could tweak a twrp version for say the t-mobile version and try to code safestrap into that and make it boot on our t337a? Recently had the need for a recovery and I want to help get it working! Do you think there is any chance with the one linked here?: http://forum.xda-developers.com/tab-4/general/sm-t235-lte-rooted-twrp-2-8-alpha1-sm-t3027059
 
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  • 20
    ******UPDATE FIX YOUR T337A WITH LOLIPOP FRIMWARE FILE******* I do not take credit for this file at all, all credit goes to MichaelSaya. Here is a direct quote from him "Here is the link to my Google drive with the Official Lollipop Firmware for the AT&T TAB 4, SM-T-337-A https://mega.nz/#!0Q4AXQgZ!Df-pTUo6eA80kGTrzpYCAJ0ilGbUzMYCE4nRtvume6s Place in AP slot in Odin and flash. Be aware that many have been bricked. Only root with Kingroot and when you reboot, you will lose root. Simply re-root with Kingroot and you will be fine. DO NOT REPLACE KINGROOT WITH SUPERSU!!!!! YOU WILL BRICK!!!!! But we have the firmware now so we can now play around knowing that if we mess something up, we can fix it."


    I found a way to re-root the t337a with the latest OTA NK2. Not sure if I was the only one in this boat or whatever but I got bored and started experiment. First thing i did was Flash the older NF4 kernel with ODIN. Put this in the PDA slot and flash! It was successful, I downloaded Towel root, and bam! Root working again ! :) Cheers!

    Tutorial:

    1. Get the latest drivers to make sure everything goes smooth http://org.downloadcenter.samsung.c...NG_USB_Driver_for_Mobile_Phones_v1.5.45.0.exe
    2. Get Odin if you don't have it yet: http://forum.xda-developers.com/attachment.php?attachmentid=1168421
    3. Download the NF4 kernel from the attachment below
    4. Go into Odin.
    5. Click on PDA, search for the file you downloaded boot.tar and select it. Pic: http://i.imgur.com/XrqVPLZ.png
    6. Now, put your tablet into download mode! If you don't know how to enter download mode go here: https://www.youtube.com/watch?v=dDE1oB2-nYw its the s5 but same concept.
    7. Plug in your tablet and it should say something like this in message window in odin: http://i.imgur.com/uWFc4YX.png
    8. Now, hit start. Let the process run. If all goes well it should say RESET! I dont know what happened to this pic lol http://i.imgur.com/AbH5qW7.png but hopefully you get the point.
    9. Give the tablet a few minutes to boot. Keep it plugged in until you see PASS! http://i.imgur.com/eTuHDUl.png
    10. Go get towel root. Run it. And BAM! You are rooted again :)



    *** WARNING *** This doesn't work with the lolipop update. I have tried to downgrade my tablet and it did softbrick it. Do not try to downgrade your tablet/try this method if you are running lolipop 5.1.1. This only works on kitkat. HOWEVER. I have the lolipop boot.tar. Use the instructions above to unbrick your tablet (This will not give you root access. I'm going to look at it and see if I can figure something out to get root access). I have not tested this myself because mine is at a friends house BUT this should work. Cheers
    2
    Do you need the 5.1.1 boot.img or the kitkat one?

    Here is a link to the 5.1.1 OTA .cfg file. Change the extension to .zip and you can open it as an archive.
    2
    I found more info regarding flashfire. Here's what someone tested

    - Will run on Android v4.x.x/5.0.x.<br />
    - Will not trip your Knox Warranty Flag.<br />
    - Will flash ROM's (use "flash .zip or ota" option).<br />
    - No AROMA installer ROM's.<br />
    - <font color="Red">Caution!</font> FF flashes to the boot partition, i.e. flashing custom kernels will result in soft brick!<br />
    - You can drop a Full Odin .tar or .zip file containing the raw images onto your device and it will flash system, kernel, cache, and recovery (will not flash modem, non-hlos, or bootloader) (use "flash firmware package" option).<br />
    - You can flash the remaining partitions via a .zip at the same time or via your PC using Odin.<br />
    - Flashes .tars with unsigned images, e.g. system.img.ext4, modem.bin. (use "flash firmware package" option).<br />
    - You can also flash individual (un-.tar'd) images, e.g. recovery.img, boot.img.<br />
    - Flashes .zip files, e.g. mod's, SuperSu Update.zips, etc (use "flash .zip or ota" option).<br />
    - Makes Backups of and Restores all partitions.<br />
    - Wipes partitions.<br />
    - Injects Root.<br />
    <br />


    -DUHA
    2
    anyone know how to unroot so I can return back to store

    need the stock firmware T337A
    4.4.2

    http://forum.xda-developers.com/showthread.php?t=3013128

    That thread has the firmware, and I have a copy. Problem is that you can't flash KK over LL. If you find a way, let me know.
    2
    No and there never will be unless we get a safestrap type recovery for it.

    We should start a thread and try to gather everything we know. I would love to have a custom rom for my tab 4, stock is so slow... Will do anything I can to help get this working.