Samsung Galaxy Note 2: back to stock, unroot, stock recovery and reset flash counter

A lot of Samsung Galaxy Note II users immediately perform root, flash custom recovery and ROMs shortly after purchasing it. But many of those have no idea how to restore their Galaxy Note 2 to stock with no root, re-using stock recovery or reset flash counter to “0″. Restore your phone to stock required if you need to repair or return to device (AT&T, T-Mobile, and Sprint) store, this procedure can also be needed when you wish to trade this phone, since most buyers prefer a device that hasn’t been mods before.

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The phone knows when you root, installed a custom recovery (CWM / TWRP) or running a custom ROM. You can see it in Settings > About > Status, Device status changes to “Modified” we should return to “Normal”. Another trace that can be located is the flash counter (Custom Binary Download), Samsung create a flash counter to keep track of how many you’ve flashed custom firmware, we need to restore it to its original state (Custom Binary Download: No). To check the flash counter, go to Download Mode (see step 5 below).

galaxy note 2 unroot back stock

Image Credit: Samsung

Restore Samsung Galaxy Note 2 back to stock and reset the flash counter.

Listed below are the steps to restore the phone to stock using CF-Auto-Root by Chainfire. You can also unroot/unbrick or back to stock by flashing stock ROM/Firmware using Odin. This method may be used on almost all variants (GT-N7100/SGH-T889/SGH-I317/SPH-L900).

  • If you have root without a custom recovery you can simply do the Factory Reset via Phone Settings. However, if you previously installed a custom recovery (TWRP/CWM) it’s better to perform Factory Reset via recovery (Wipe> Factory reset).
  • Download most recent Odin 3 and CF-Auto-Root file can be downloaded at autoroot.chainfire.eu, find the proper version: T889 (T-Mobile), I317 (AT&T), L900 (Sprint ) or N7100 (International).
  • Extract Odin3-vx.xx.zip into New Folder, and also extract CF-Auto-Root-xxx-xxx.zip into same folder.
  • odin and tar.md5

    Extract Package

  • Run Odin3-vx.xx.exe, hit PDA button and select the file extracted on step 3 (CF-Auto-Root-xxx.xxx.tar.md5).
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  • Grab your phone and go to download mode (turn off first, press and hold following buttons: vol down + home + power). Then connect it to PC via USB.
  • Flash Count

    Download Mode

  • Back to Odin3 and make sure your device has been recognized, on Option uncheck “Repartition”.
  • galaxy note 2 flash odin

    ODIN Flash Tool

  • Start flash by pressing the Start button, and wait for your phone to boot. If it works then you will have a stock recovery and rooted with SuperSU.
  • After Samsung Galaxy Note II boots, in order to reset the flash counter, install Triangle Away app that you can get it for free here, but if you have a some funds we recommend to purchase it from Google Play. After successfully resetting the counter and reboot, uninstall it.
  • Open SuperSU and select an option to Full unroot.
  • supersu full unroot

    SuperSU Full Unroot

  • Enter into stock recovery and perform factory reset. Device Status will change to “Normal”.
  • This guide is hard to follow ? Try to use another method by flashing Galaxy Note 2 stock ROM/firmware.

 

Filled Under:Unroot and Relock
Related Mods

12 Responses

  1. Clover 43December 9, 2012 at 4:44 AMReply

    can this also be performed using a MAC?

    • Author

      FridzaDecember 10, 2012 at 1:04 AMReply

      Since there’s no iOS version of ODIN, you can’t do it on Mac.
      But Virtual Machine (VMWare) can be alternative.

  2. Michael McKayDecember 9, 2012 at 10:31 AMReply

    Cam this be done on the Verizon sch-i605 version?

  3. crnraoDecember 28, 2012 at 10:07 PMReply

    This is a very useful piece of information.
    I have a slightly different issue.
    While using Galaxy Note 2 Toolkit for rooting my device, I am left with TWRP recovery and root has not been installed. I was not able to root it after many attempts. Checking for updates results in the message “your device has been modified”
    Is there a method to root my phone? My phone is fully functional, but without root access.
    Thank you for your time.

  4. mrq201January 18, 2013 at 9:24 PMReply

    I am having the same issue as crnrao..
    \This is a very useful piece of information.
    I have a slightly different issue.
    While using Galaxy Note 2 Toolkit for rooting my device, I am left with TWRP recovery and root has not been installed. I was not able to root it after many attempts. Checking for updates results in the message “your device has been modified”
    Is there a method to root my phone? My phone is fully functional, but without root access.
    Thank you for your time.\

    What I want to do is fully remove the recovery and have a stock phone again so I can do the OTA updates

  5. AlexMarch 18, 2013 at 4:17 AMReply

    Hi Fridza. If I use CF-auto-root to root my phone, can I update my latest firmware using OTA update without un-rooting it? Will it bricks my phone? Since this CF-auto-root does not install any custom recovery.

  6. ThorMay 27, 2013 at 2:16 PMReply

    It _can_ be don on a Mac – use Heimdall instead of Odin.

    The latest Heimdall is command-line only, but it gets the task done.

  7. Redeye DogJune 26, 2013 at 2:45 PMReply

    Followed steps exactly. GT-N7100 still says modified after all that. Any ideas? I just want to get back to OTA updates..

    • Author

      FridzaJune 26, 2013 at 6:12 PMReply

      Do you mean, “Device status: Modified” on Settings ?
      Just perform a factory reset.

      • Redeye DogJune 26, 2013 at 6:17 PMReply

        Yeah. That is what I meant. Originally, it still said modified. Later it went to normal. Thanks for asking. I used to have the wifi calling feature in the menu but after screwing around rooting, resetting, etc., etc. It’s gone and I can’t get it back to save my life..

        I was hoping that restoring it to factory would do it but nope..

  8. sameerNovember 4, 2013 at 10:38 AMReply

    Just use the bootloader and PDA at the same tume you should be good

  9. sameerNovember 4, 2013 at 10:39 AMReply

    Just use the bootloader and PDA at the same time you should be good

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