Develop Bugs

[q] downgrade from official 4.3 xxuemk4 n7100

Hello friends I need a little help in downgrading my N7100
I updated my note 2 to the latest official update 4.3 MK4 by downloading it from samfirmware. I installed it n it was working good. Next I tried rooting it with the procedure on this page http://www.ibtimes.co.uk/articles/5...e2-n7100-root-android43-xxuemk4-jellybean.htm
which was by CF AUTO ROOT method. The superuser app was injected in it but knox prevented itfrom running everytime. I tried it twice but invain. So I wasn't successful in rooting it n I'm running my phone without root n the bootloader now shows that the warranty is void .(.knox is stuck in there). I tried downgrading it to official 4.1.2 by odin but it doesn't go through n I had to flash official 4.3 again.
I need help my friends.. if anybody can tell me how to Reber back to 4.1.2 or if I can root my official 4.3
Please help me

saif.dmaster said:
Hello friends I need a little help in downgrading my N7100
I updated my note 2 to the latest official update 4.3 MK4 by downloading it from samfirmware. I installed it n it was working good. Next I tried rooting it with the procedure on this page http://www.ibtimes.co.uk/articles/5...e2-n7100-root-android43-xxuemk4-jellybean.htm
which was by CF AUTO ROOT method. The superuser app was injected in it but knox prevented itfrom running everytime. I tried it twice but invain. So I wasn't successful in rooting it n I'm running my phone without root n the bootloader now shows that the warranty is void .(.knox is stuck in there). I tried downgrading it to official 4.1.2 by odin but it doesn't go through n I had to flash official 4.3 again.
I need help my friends.. if anybody can tell me how to Reber back to 4.1.2 or if I can root my official 4.3
Please help me
Click to expand...
Click to collapse
4.3 official mk4 and its bootloader is non down gradable. KNOX killed it!

warlycastro said:
4.3 official mk4 and its bootloader is non down gradable. KNOX killed it!
Click to expand...
Click to collapse
So you mean to say that I won't be able to revert it back to 4.1.2 or root the official 4.3.

saif.dmaster said:
Hello friends I need a little help in downgrading my N7100
I updated my note 2 to the latest official update 4.3 MK4 by downloading it from samfirmware. I installed it n it was working good. Next I tried rooting it with the procedure on this page http://www.ibtimes.co.uk/articles/5...e2-n7100-root-android43-xxuemk4-jellybean.htm
which was by CF AUTO ROOT method. The superuser app was injected in it but knox prevented itfrom running everytime. I tried it twice but invain. So I wasn't successful in rooting it n I'm running my phone without root n the bootloader now shows that the warranty is void .(.knox is stuck in there). I tried downgrading it to official 4.1.2 by odin but it doesn't go through n I had to flash official 4.3 again.
I need help my friends.. if anybody can tell me how to Reber back to 4.1.2 or if I can root my official 4.3
Please help me
Click to expand...
Click to collapse
follow my guide to root.....heres the link.....
http://forum.xda-developers.com/showthread.php?t=2540761

saif.dmaster said:
So you mean to say that I won't be able to revert it back to 4.1.2 or root the official 4.3.
Click to expand...
Click to collapse
Correct. However you can root 4.3.
All the info you need is already on forum if you use the search button. If you had bothered to do research before upgrading you would have already known about knox/bootloader.

Downgrading from 4.3
Hi, I flashed DN3 and I flashed MJ5 bootloader. I flashed WanamLite MK4 V4.2 Android 4.3 previously too. Is it possible for me to downgrade? I need to restore to factory setting since I'm going to send my phone for warranty.

I am newbee, can you please explain me how to downgrade from XXUEMK4 (India) to MJ5 bootloader. Please explain what is DN3 and how to flash it.

diaBoliQu3 said:
Hi, I flashed DN3 and I flashed MJ5 bootloader. I flashed WanamLite MK4 V4.2 Android 4.3 previously too. Is it possible for me to downgrade? I need to restore to factory setting since I'm going to send my phone for warranty.
Click to expand...
Click to collapse
yes you can
---------- Post added at 12:52 PM ---------- Previous post was at 12:49 PM ----------
kavena78 said:
I am newbee, can you please explain me how to downgrade from XXUEMK4 (India) to MJ5 bootloader. Please explain what is DN3 and how to flash it.
Click to expand...
Click to collapse
DN^is a rom, ditto note.. It has note 3 features. Like wanam or phoenix or dr.ketan's custom rom..
you can download it from the forum. just look for it.. And you can flash it with a custom recovery like philz touch or twrp..
This is all I am assuming that you know how to root and you have any version of any custom recovery.
If not, you can read dr. ketan's tutorial in the forum..

myaslioglu said:
yes you can
=
Click to expand...
Click to collapse
Ouch... I can't. Don't know where I did wrong. Now trying leaked 4.3. No plan to downgrade anymore.

saif.dmaster said:
Hello friends I need a little help in downgrading my N7100
I updated my note 2 to the latest official update 4.3 MK4 by downloading it from samfirmware. I installed it n it was working good. Next I tried rooting it with the procedure on this page http://www.ibtimes.co.uk/articles/5...e2-n7100-root-android43-xxuemk4-jellybean.htm
which was by CF AUTO ROOT method. The superuser app was injected in it but knox prevented itfrom running everytime. I tried it twice but invain. So I wasn't successful in rooting it n I'm running my phone without root n the bootloader now shows that the warranty is void .(.knox is stuck in there). I tried downgrading it to official 4.1.2 by odin but it doesn't go through n I had to flash official 4.3 again.
I need help my friends.. if anybody can tell me how to Reber back to 4.1.2 or if I can root my official 4.3
Please help me
Click to expand...
Click to collapse
if u want to root then follow my guide here........its working perfectly...
http://forum.xda-developers.com/showthread.php?p=47896587&postcount=5

TheATHEiST said:
Correct. However you can root 4.3.
All the info you need is already on forum if you use the search button. If you had bothered to do research before upgrading you would have already known about knox/bootloader.
Click to expand...
Click to collapse
So if I'm able to root it. . Would I be able to downgrade it.. I'm thinking of DN3
any help is appreciated
Thank you

diaBoliQu3 said:
Ouch... I can't. Don't know where I did wrong. Now trying leaked 4.3. No plan to downgrade anymore.
Click to expand...
Click to collapse
I too have installed DN3 on my other note 2.. With MJ5 bootloader. . So dies it mean I can't downgrade now to 4.1.2
Sent from my Samsung Galaxy NOTE II

saif.dmaster said:
I too have installed DN3 on my other note 2.. With MJ5 bootloader. . So dies it mean I can't downgrade now to 4.1.2
Sent from my Samsung Galaxy NOTE II
Click to expand...
Click to collapse
I'm not sure about that mate. I was told downloadable. But my downgrade fail for unknown reason. So I decided to flash stock 4.3, and the process fail too. I'm not sure if it's Windows 8, or it's my cable because everything goes fine with Windows 7. Then I flash again at Windows 8, everything turn to be fine. So I guess it's my cable and charger port issue. I will not downgrade to 4.1.2 since I just realize that my warranty expired 3 days ago.
---------- Post added at 06:44 PM ---------- Previous post was at 06:37 PM ----------
saif.dmaster said:
I too have installed DN3 on my other note 2.. With MJ5 bootloader. . So dies it mean I can't downgrade now to 4.1.2
Sent from my Samsung Galaxy NOTE II
Click to expand...
Click to collapse
Well, this might help you. But again, it doesn't help me. Maybe it's my cable or mini USB port problem:
http://forum.xda-developers.com/showthread.php?t=2536418
And I read this too:
http://forum.xda-developers.com/showthread.php?p=46861777#post46861777
Good luck.:good:

How to downgrade from 4.3 to any
saif.dmaster said:
Hello friends I need a little help in downgrading my N7100
I updated my note 2 to the latest official update 4.3 MK4 by downloading it from samfirmware. I installed it n it was working good. Next I tried rooting it with the procedure on this page http://www.ibtimes.co.uk/articles/5...e2-n7100-root-android43-xxuemk4-jellybean.htm
which was by CF AUTO ROOT method. The superuser app was injected in it but knox prevented itfrom running everytime. I tried it twice but invain. So I wasn't successful in rooting it n I'm running my phone without root n the bootloader now shows that the warranty is void .(.knox is stuck in there). I tried downgrading it to official 4.1.2 by odin but it doesn't go through n I had to flash official 4.3 again.
I need help my friends.. if anybody can tell me how to Reber back to 4.1.2 or if I can root my official 4.3
Please help me
Click to expand...
Click to collapse
The bootloader is stuck to new Knox so I advise to try to flash through Odin any room that have no bootloader in it. that means any room included stock. every attempt to flash bootloader will fail unles someone develop a method to enable us to do that
In regards with root.. after you have used CF method you must install SuperSu from market and that will bypass Knox in disable super user because come from a normal channel

[Q] Please help me. Knox!

Hello guys!!!
I have a Galaxy Note II N7100 for the past 1 year. I recently installed Hurricane v 8 rom which is based on 4.3 firmware.As I was using it, I realized the RAM was increasing up to 1.3 GB, the only thing that could fix it was to reboot the phone. Later I watched a youtube review of a Note II with an official 4.3 installed and the RAM was about 600 MB on that persons phone. So I went ahead and downloaded a 4.3 firmware N7100DDUEML4 from sammobile.com. After the installation via Odin I boot the phone and it was fine. I read a few articles on how I can root the 4.3 firmware with CF Autoroot and did it as it should be done. After the reboot, Knox blocked the SU and the KNOX flag went to 0x1. After all this I decided to install Philz Recovery via Odin and got access to recovery. My plan was to recover my Hurricane Rom that I previously backed up. After Philz recovery restored the Hurricane Rom, I got stack on Boot Screen. Because Knox is flagged 0x1 I can't install any firmware via Odin anymore. So the next step I did is to restore my phone via Kies. I managed to successfully restore it and now I have a 4.3 firmware N7100XXUEMK9 firmware and Android Status As Enforcing. How can I get root access with this firmware and what should I do with Knox flag 0x1?
Thank you in advance guys!!!

The SafeRoot exploit has been confirmed working for N7100 too (check here), but it can't help to reverse Knox flag 0x1. Try it out. it should work. Anyway, why bother warranty after 12 months?
MichaelVaughn said:
Hello guys!!!
I have a Galaxy Note II N7100 for the past 1 year. I recently installed Hurricane v 8 rom which is based on 4.3 firmware.As I was using it, I realized the RAM was increasing up to 1.3 GB, the only thing that could fix it was to reboot the phone. Later I watched a youtube review of a Note II with an official 4.3 installed and the RAM was about 600 MB on that persons phone. So I went ahead and downloaded a 4.3 firmware N7100DDUEML4 from sammobile.com. After the installation via Odin I boot the phone and it was fine. I read a few articles on how I can root the 4.3 firmware with CF Autoroot and did it as it should be done. After the reboot, Knox blocked the SU and the KNOX flag went to 0x1. After all this I decided to install Philz Recovery via Odin and got access to recovery. My plan was to recover my Hurricane Rom that I previously backed up. After Philz recovery restored the Hurricane Rom, I got stack on Boot Screen. Because Knox is flagged 0x1 I can't install any firmware via Odin anymore. So the next step I did is to restore my phone via Kies. I managed to successfully restore it and now I have a 4.3 firmware N7100XXUEMK9 firmware and Android Status As Enforcing. How can I get root access with this firmware and what should I do with Knox flag 0x1?
Thank you in advance guys!!!
Click to expand...
Click to collapse

xbean said:
The SafeRoot exploit has been confirmed working for N7100 too (check here), but it can't help to reverse Knox flag 0x1. Try it out. it should work. Anyway, why bother warranty after 12 months?
Click to expand...
Click to collapse
Thank you so much for your reply, yeah it is true but it is not that I am worried about the warranty, I want to revert back to a different rom and patch a bootloader so I can install custom firmwares.MJ5 bootloader patch doesn't work for me. Is it possible at this time to patch this MK9 or it is still unsolved issue? Thank you once again for your reply.

I have read a lot of posts & make sure I understand the details before I upgrade to v4.3. The far too many failures for upgrades that I've ever seen prior to v4.3 make me more conscious than ever. I'm on MJ5 bootloader & successfully loaded two different custom ROMs without any problem. I suggest you to do more reading in this forums prior to the upgrade. If you're on bootloader newer than MJ5 then I would suggest to stay with the bootloader & root it with the Safeboot method then clean up the KNOX crap. It should work great after the upgrade, root & clean up. cheers.
MichaelVaughn said:
Thank you so much for your reply, yeah it is true but it is not that I am worried about the warranty, I want to revert back to a different rom and patch a bootloader so I can install custom firmwares.MJ5 bootloader patch doesn't work for me. Is it possible at this time to patch this MK9 or it is still unsolved issue? Thank you once again for your reply.
Click to expand...
Click to collapse

MichaelVaughn said:
Thank you so much for your reply, yeah it is true but it is not that I am worried about the warranty, I want to revert back to a different rom and patch a bootloader so I can install custom firmwares.MJ5 bootloader patch doesn't work for me. Is it possible at this time to patch this MK9 or it is still unsolved issue? Thank you once again for your reply.
Click to expand...
Click to collapse
Try this link it will be helpful to you..
http://forum.xda-developers.com/showpost.php?p=48032704&postcount=4753
:good::good:

How to have custom recovery

Hey guys its been a week since i bought the note 2 and i rooted it. But i cannot find how to flash a custom recovery tutorial anywhere. I am on jellybean 4.1 and the rest of the details (firmware etc) can be found on the screenshots attached..
I would highly appreciate if someone can send me a link to the guide for flashing.. thanks a lot in advance
Sent from my GT-N7100 using XDA Premium 4 mobile app

Just simply flash via Odin
You can choose CWM, Philz touch or TWRP

RazaVakil7995 said:
Hey guys its been a week since i bought the note 2 and i rooted it. But i cannot find how to flash a custom recovery tutorial anywhere. I am on jellybean 4.1 and the rest of the details (firmware etc) can be found on the screenshots attached..
I would highly appreciate if someone can send me a link to the guide for flashing.. thanks a lot in advance
Sent from my GT-N7100 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
You got two options either root your phone while being on 4.1.2 or upgrade to official Indian 4.4.2 and then root it.Ofcourse once you root your current 4.1.2 you can try custom 4.4 ROM and if you don't like it you can go back to 4.1.2 or flash a 4.3 custom ROM. To root your 4.1.2 rom read this guide.If you decide to upgrade to 4.4.2 Indian firmware download it from here.
To flash the 4.4.2 ROM on your phone download it from the above link(there are 3 links where the ROM is uploaded) ,use any of the links and download the zip file,extract it you'll get a tar file,put your phone into download mode ,open odin v3.09 on pc and flash the official stock rom by checking the AP tab on odin.You can find tutorials on youtube on how to use odin to flash official stock firmware so just look them up if you need it.Once you flash stock ROM you can root your phone via this guide.
Okay so now things to remember.If you root your 4.1.2 ROM and want to try 4.3 or 4.4 custom ROM you need to flash MJ5 bootloader in order to have working wifi.Bootloader is flashed directly on your mother board and it cannot be downgraded only be upgraded.MJ5 is the last 4.3 bootloader which is KNOX free(what is knox ,blah blah,you can read about it on google).Advantage of MJ5 is you can try 4.1.2/4.3/4.4.2 rom and your warranty and knox remain intact but if you upgrade to official 4.3 or 4.4.2 ROM you'll be on knoxed bootlooader which means you cannot downgrade to 4.1.2 anymore plus rooting a phone with knoxed bootloader will trigger knox 0x1 and your warranty if any will be void (no way yet to reset Knox).So if you have warranty on your phone then my advise is root your 4.1.2 Rom,download any 4.3 or 4.4.2 custom ROM,you wont have wifi working then flash the MJ5 bootloader from here and read this post on how to flash bootloader.
I know it's a lot of info to you but your best guide is self reading from the above links i hooked you up with.Also read comments from people cause that's how I learned I read and read a lot before i jumped the rooting bandwagon cause wanted to make sure i don't brick my phone. Ofcourse whenever in doubt STOP RIGHT THERE and ask us.Dont attempt things that you are not sure of.Good luck.

Thanks for the help
singhpratik87 said:
You got two options either root your phone while being on 4.1.2 or upgrade to official Indian 4.4.2 and then root it.Ofcourse once you root your current 4.1.2 you can try custom 4.4 ROM and if you don't like it you can go back to 4.1.2 or flash a 4.3 custom ROM. To root your 4.1.2 rom read this guide.If you decide to upgrade to 4.4.2 Indian firmware download it from here.
To flash the 4.4.2 ROM on your phone download it from the above link(there are 3 links where the ROM is uploaded) ,use any of the links and download the zip file,extract it you'll get a tar file,put your phone into download mode ,open odin v3.09 on pc and flash the official stock rom by checking the AP tab on odin.You can find tutorials on youtube on how to use odin to flash official stock firmware so just look them up if you need it.Once you flash stock ROM you can root your phone via this guide.
Okay so now things to remember.If you root your 4.1.2 ROM and want to try 4.3 or 4.4 custom ROM you need to flash MJ5 bootloader in order to have working wifi.Bootloader is flashed directly on your mother board and it cannot be downgraded only be upgraded.MJ5 is the last 4.3 bootloader which is KNOX free(what is knox ,blah blah,you can read about it on google).Advantage of MJ5 is you can try 4.1.2/4.3/4.4.2 rom and your warranty and knox remain intact but if you upgrade to official 4.3 or 4.4.2 ROM you'll be on knoxed bootlooader which means you cannot downgrade to 4.1.2 anymore plus rooting a phone with knoxed bootloader will trigger knox 0x1 and your warranty if any will be void (no way yet to reset Knox).So if you have warranty on your phone then my advise is root your 4.1.2 Rom,download any 4.3 or 4.4.2 custom ROM,you wont have wifi working then flash the MJ5 bootloader from here and read this post on how to flash bootloader.
I know it's a lot of info to you but your best guide is self reading from the above links i hooked you up with.Also read comments from people cause that's how I learned I read and read a lot before i jumped the rooting bandwagon cause wanted to make sure i don't brick my phone. Ofcourse whenever in doubt STOP RIGHT THERE and ask us.Dont attempt things that you are not sure of.Good luck.
Click to expand...
Click to collapse
Wow that's a lot of info you provided there, thanks. I am not new to rooting as far it goes I have rooted and flashed many roms on my galaxy s advance and my micromax A87 before that. But note 2 was a flagship device so there are many complications that come along which got me confused. As for now, I have my rooted 4.1.2 stock rom along with cwm recovery flashed via rom manager. I am planning to flash either DN3 or the Xperia Z-ized rom. So my question is: do I have to flash mj5 bootloader to flash DN3 and xperia z-ized or can I directly flash it from cwm (with factory reset and necessary wipes of course)?
BTW, I have heard that knox is a security application that prohibits rooting on samsung phones. It also had a reward for $18k for those who can bypass the knox on the S5 and root it. If I am right, then I think I am fairly acquainted to knox.
Once again, thanks a lot for helping! Appreciate it

RazaVakil7995 said:
Wow that's a lot of info you provided there, thanks. I am not new to rooting as far it goes I have rooted and flashed many roms on my galaxy s advance and my micromax A87 before that. But note 2 was a flagship device so there are many complications that come along which got me confused. As for now, I have my rooted 4.1.2 stock rom along with cwm recovery flashed via rom manager. I am planning to flash either DN3 or the Xperia Z-ized rom. So my question is: do I have to flash mj5 bootloader to flash DN3 and xperia z-ized or can I directly flash it from cwm (with factory reset and necessary wipes of course)?
BTW, I have heard that knox is a security application that prohibits rooting on samsung phones. It also had a reward for $18k for those who can bypass the knox on the S5 and root it. If I am right, then I think I am fairly acquainted to knox.
Once again, thanks a lot for helping! Appreciate it
Click to expand...
Click to collapse
Since you are on stock 4.1.2 MJ5 is required for wifi to work.i learned 2 weeks ago that even mj5 is not required as previously thought by us at least not while flashing 4.4.2 TW rom.When you flash 4.4.2 custom ROM you wont have wifi working,then flash custom kernel like agni or nadia and wifi works flawlessly so one doesn't need to flash mj5 bootloader.I am not sure if this would work on 4.3 ROM you could try xperia z'd 4.3 custom ROM then flash a compatible 4.3 custom kernel and see if wifi works if it does you're set.This was new to most of us so I asked the person who told me about this how did he manage to do this and he told me apparently custom kernels have some sort of wifi drivers on them so when we flash custom kernels on 4.4.2 ROM wifi works but it wont work on stock kernel unless you upgrade to MJ5 and on stock kernel.MJ5 is safe to flash anyways since its knox free bootloader.
Actually 4.3 and 4.4.2 note 2 phones and others got knox on them but we found a way to disable knox after rooting our phone SuperSu disables it but knox is triggered to 0x1 and there's no way to reset KNOX since it's concerned with the motherboard of the phone which is the heart and soul of out note 2.So that bounty you might be talking about how to reset it perhaps.Even if they succeed in reversing it doesn't necessarily mean it would work on note 3 or note 2 cause of the phones being of different hardware .i don't know the technicalities of this.

singhpratik87 said:
Since you are on stock 4.1.2 MJ5 is required for wifi to work.i learned 2 weeks ago that even mj5 is not required as previously thought by us at least not while flashing 4.4.2 TW rom.When you flash 4.4.2 custom ROM you wont have wifi working,then flash custom kernel like agni or nadia and wifi works flawlessly so one doesn't need to flash mj5 bootloader.I am not sure if this would work on 4.3 ROM you could try xperia z'd 4.3 custom ROM then flash a compatible 4.3 custom kernel and see if wifi works if it does you're set.This was new to most of us so I asked the person who told me about this how did he manage to do this and he told me apparently custom kernels have some sort of wifi drivers on them so when we flash custom kernels on 4.4.2 ROM wifi works but it wont work on stock kernel unless you upgrade to MJ5 and on stock kernel.MJ5 is safe to flash anyways since its knox free bootloader.
Actually 4.3 and 4.4.2 note 2 phones and others got knox on them but we found a way to disable knox after rooting our phone SuperSu disables it but knox is triggered to 0x1 and there's no way to reset KNOX since it's concerned with the motherboard of the phone which is the heart and soul of out note 2.So that bounty you might be talking about how to reset it perhaps.Even if they succeed in reversing it doesn't necessarily mean it would work on note 3 or note 2 cause of the phones being of different hardware .i don't know the technicalities of this.
Click to expand...
Click to collapse
How do you know all this man??

RazaVakil7995 said:
How do you know all this man??
Click to expand...
Click to collapse
Lurking around in xda and reading as much as I can and participating in discussions related to Knox.I was clueless to all this Knox and how it works.My previous phone was HTC HD2 so samsung note II was the first serious smartphone I owned so just wanted to be extra careful that I don't end up bricking my device so read and read and asked questions.

new to note forum...!!!

Please please forgive me if I'm reposting. I have an s3 that's rooted up and running great so not a novice here. Although my brother finally gave me his T-Mobile note 2- 4.3 w/knox to play with. However his request was to root and unlock it. I've been through the threads over here and just need a link to the most successful method to achieve this. I've tried a couple of rooting methods already (cf auto and Mr Robinson) but can't get root to stick or get recovery. I guess can I factory reset his phone and flash a 412 rom over it and root and unlock that way?? And I believe his 4.3 update was ota. I would appreciate any help here thanks.

Rjevon said:
Please please forgive me if I'm reposting. I have an s3 that's rooted up and running great so not a novice here. Although my brother finally gave me his T-Mobile note 2- 4.3 w/knox to play with. However his request was to root and unlock it. I've been through the threads over here and just need a link to the most successful method to achieve this. I've tried a couple of rooting methods already (cf auto and Mr Robinson) but can't get root to stick or get recovery. I guess can I factory reset his phone and flash a 412 rom over it and root and unlock that way?? And I believe his 4.3 update was ota. I would appreciate any help here thanks.
Click to expand...
Click to collapse
I had some trouble getting root & recovery to stick on my stock 4.3 Note 2. I think the method that worked best for me was installing TWRP recovery using Odin. The official T-Mobile Note 2 TWRP thread is here:
http://forum.xda-developers.com/showthread.php?t=1966105
There is a download link towards the bottom of the 1st post that redirects to the TWRP homepage but here is the direct link to the TWRP page for the T-Mobile Note 2:
http://teamw.in/project/twrp2/123
The Odin Method is the last on in the list, download the TAR file & flash with Odin
Once you have recovery, you can flash the latest Chainfire (1.99) to root your ROM or just flash a custom ROM
This may help you to get root/recovery but beware, I have been randomly losing my root access even on custom rooted ROMs. I just created a new thread yesterday to hopefully track & resolve the issue but I have a feeling it is related to the 4.3 bootloader which currently can't be rolled back or fixed in the T-Mobile Note 2. My thread for losing root is in the link below, please check it out and see if you are experiencing the same issue:
http://forum.xda-developers.com/note-2-tmobile/help/4-3-custom-roms-losing-root-t2817114

Note 2 gt n 7100 upgraded to nougat 7.1 lost root and cwm recovery

Hi
Recently I installed nougat 7.1 on my note 2 7100. Phone is working smoothly but I lost my root and cwm recovery . I tried to enabled root from developer option but failed. Any can help to get it back

Not sure but flashing Nougat with CWM may have caused the problem. I suggest using twrp to re-flash the ROM.

Thank you for you reply.
I have odin3 v3.10.7 which I used for galaxy ace 3. My question is the same Odin can I use it for my note 2 also.
If so where can I get a suitable version of Twrp for Odin.
Please answer.

OK I have solved my problem by re rooted the phone.