Users who applied root for their Galaxy Note 2 LTE model are now able to restore it to stock Android 4.1.2 Jelly Bean and unroot it completely and reset its ‘binary counter’. All these actions will restore the warranty of your device and revoke its root access. Read this entire post and you should be able complete all actions in under 10 minutes without bricking the ‘phablet’ device.
The Galaxy Note 2 LTE N7105 is great device and you might’ve started to modify its operating system in order to try and get the best out of it. There are many users who are hating the TouchWiz Nature UX interface of the phone, which is why some are trying to change that by flashing custom ROMs that resemble the AOSP version of the Jelly Bean OS. So, if you’ve installed a CM 10.1 build or any other type of Android 4.1.2 / 4.2.2 Jelly Bean custom ROM, then this is the guide that you can use to restore your device to stock Jelly Bean build.
This process of unrooting and resetting the binary flash counter of your device shouldn’t take more than 10 minutes. Remember that in case you stumble upon any major problems, then you will be forced to repeat the entire tutorial. Also, it would be best for you to ask for extra help in comments or at XDA Community dedicated forum page for this tutorial here.
Advanced Android users should use this guide, which is why you should only use it in case you know what you’re doing. Note that you might end up bricking the phone if you’re applying the wrong steps.
In order to successfully complete this tutorial, you need to take a look at the preparation guide below. It should help you to correctly configure your PC and the Galaxy Note 2 Unrooting process, so that you’ll manage to finish all tasks at your first attempt. Here’s what you have to do:
- use the guide only with the Galaxy Note 2 LTE model number N7105.
- don’t try to unroot any other smartphone using this tutorial nor the files found in it.
- make sure to backup all the data that is currently stored on your phone’s internal and external storage.
- your PC should have the Samsung USB Drivers installed on it, otherwise it won’t recognize the smartphone.
- enable the USB Debugging option from the Developer Options.
- make sure that your computer doesn’t run the Samsung KIES software when connected with the Galaxy Note 2 LTE.
- any antivirus and security programs shouldn’t be running on your PC, as these will interfere with the unrooting process.
- make sure that the device’s battery has enough power left in it, so that it won’t switch off while you’re applying any chnages.
- this is a guide for advanced Android users, don’t try to use this tutorial if you don’t know what you’re doing, as you’ll risk bricking your phone.
- you cannot held us responsible in case you lose data or you brick your smartphone in the process.
- if you cannot complete the tutorial, then you should ask for extra help in comments.
Now that you know all of the above, continue to the next part of this article and learn how to unroot your device, restore it to stock Jelly Bean 4.1.2 and reset the binary flash counter.
How to unroot Galaxy Note 2 LTE N7105 and restore it to Android 4.1.2 Jelly Bean stock ROM:
- Download the stock Android 4.1.2 Jelly Bean from HERE. Save the file on your PC.
> choose the region that’s corresponding to your location.
- Extract the contents of the zip and place them into a single folder. You will get a file with the .tar.md5 extension, don’t extract it any further than that.
- Download Odin3 v1.85 from HERE. Extract its contents and save them on your PC.
- Power off your Galaxy Note 2 LTE completely.
- Boot the phone into Download Mode using Volume Down, Home and Power buttons simultaneously. Confirm that you wish to boot into Download Mode by pressing Volume Up.
- Launch Odin exe on your PC.
- Connect the phone with your computer via USB data cable.
> wait for Odin to recognize and add the device.
> if the phone is not recognized, then you should change USB ports or try to reinstall the Samsung USB Drivers with the link provided in the preparation part of this post.
- Click the ‘PDA’ button from Odin main screen.
- Browse your PC for the .tar.md5 Android 4.1.2 JB file. Load it into Odin.
> don’t edit any other Odin default settings.
> make sure to disable the Re-partition option.
- Press the START button when you’re ready for the installation of the ‘new’ and stock Android 4.1.2 Jelly Bean firmware.
- Wait several minutes for the installation to complete. When that happens, the phone will reboot and you can unplug it from your PC when the Samsung boot animation screen appears.
- Enter your Google Account details when you’re at the main screen of the new OS.
These were all the steps that you had to take in order to complete the installation of its original stock Android 4.1.2 Jelly Bean firmware. This is only the first part of the ‘unrooting process’, as you will still have to reset the binary counter and wipe the data that keeps the information about how many times you’ve changed the device’s internal OS. The ‘reset binary counter’ part is listed after the NOTE below.
NOTE: In case your device doesn’t boot successfully then you will be forced to ‘factory reset’ it. Do it like this:
- power the Galaxy Note 2 LTE completely.
- boot into Recovery Mode using Volume Up, Home and Power buttons.
- Select ‘wipe data/ factory reset’ option and confirm this process.
- go back to the first Recovery screen and select ‘reboot system now’.
The device should boot now in normal mode.
Now you can reset your device’s binary counter using the instructions that I have listed below:
- Power off the Galaxy Note 2 LTE device.
- Boot it into Download Mode and check its status info. If it says ’0′ or ‘NO’, then you’re done and the warranty has been restored.
> If otherwise, then you will need to continue with this tutorial.
- If the ‘device status’ says ’1′, then you will be forced to root your device and use Triangle Away app from Google Play store here.
- Install and use Triangle Away on a rooted firmware of Galaxy Note 2 LTE N7105.
- Now, return to this tutorial and flash the stock firmware above once again. This means that you will unroot the device for a second time.
- The counter will be restored to ‘zero’ value, but it might say that it is ‘modified’. In that case you need to perform a ‘factory wipe’ and then the device will be restored to 100% factory firmware.
- That’s it, now you can reboot the phone and you should check the phone’s version of the firmware, by going through Settings, then About Phone and check its version.
I hope that you’ve managed to complete this guide and reset the phone’s binary counter so that it will have its warranty restored. If you have any other questions, then you should ask for extra help in our comments field. Make sure to post a detailed comment so that we will be able to offer you a viable solution for any problems that you might’ve encountered in your quest to unroot the Galaxy Note 2 LTE smartphone.