[OnePlus Nord N200 5G] Jaybone073:
Attached is the stock boot image pulled via payload dumper for the OnePlus Nord N200 5G. It is from the full OTA zip - Official Build 11.0.2.0.DE17AA dated September 2nd 2021.

It seems quite a few folks are trying to get ahold of this. *Download link at the bottom*

I AM NOT A DEVELOPER!! I am just posting this for those who need the image file.

The guide to install this is pretty simple. If you have previously rooted the device then you most likely have installed the partially functional version of TWRP for the device. If you have, then you can use the same method for installing TWRP to install the factory boot image. Keep in mind that if you have installed Magisk to the device then you may encounter problems. The following pre-requisites should be followed prior to flashing.

1.) Do a complete uninstall of Magisk if you wish to no longer retain root. There are no guarantees this will work if you keep Magisk on the device. Since Magisk changes the system binaries, stock recovery may not work properly.

2.) Make sure the bootloader remains UNLOCKED! Attempting to lock the bootloader WILL cause an error message that the "Device is corrupt and will NOT BOOT"

3.) Make sure you have enabled USB debugging and your PC can recognize the device. You can do this by booting up the device normally and use the command prompt

adb devices

If the device is recognized it will return with your device ID and "device". If you see anything other than the ID and device (such as unauthorized) then please check to make sure you have enabled USB debugging, the device is plugged to the PC and the path to your platform tools of ADB and Fastboot tools is proper in your command prompt sequence

HOW TO INSTALL:

1.) With the device on and plugged in, open a command prompt in the path that your ADB and Fastboot platform tools are located and type:

adb devices

If properly read, ADB should return with the device ID and "device" as stated above.

2.) Now execute the ADB command:

adb reboot bootloader

Wait a few seconds. The device should now boot into Fastboot Mode.

3.) Now execute the fastboot command:

fastboot devices

The device should now read like earlier with the device ID and "fastboot". If true, fastboot commands will be accepted. Also please double check the device state on the phone screen. Make sure the device is UNLOCKED. If so, stop reading this step and go to step 4. If it is not unlocked DO NOT proceed and reboot the device using the volume keys when the word "START" is in green letters at the top and pressing the power key. DO NOT proceed any further. If your device is functioning in a locked state then stop reading this guide and go back to playing minecraft or flappy bird or whatever it is you do with your phone.

4.) VERY IMPORTANT!! Execute the following fastboot command:

fastboot getvar current-slot

The device will give a letter, either a or b. PLEASE remember the letter as the next step will require that letter after the underscore in the next fastboot command. If slot a, type a; if slot b, type b after typing the underscore.

5.) Make sure this boot image file is located in the same folder as your adb and fastboot for your platform tools and execute the fastboot command:

fastboot flash boot_a boot.img (this is for those who are on slot a from step 4) OR

fastboot flash boot_b boot.img (this is for those who are on slot b from step 4)

6.) You are welcome to flash to both slots if you like as no harm will come from doing this, but only the current slot is necessary for it to work. You can also flash it as many times as you like but that's just dirty flashing over TWRP over and over. Finally wipe the cache and reboot by typing the following fastboot commands:

fastboot -w (this wipes the cache - not necessary but helpful)

fastboot reboot

7.) Enjoy stock recovery. You can also use the volume keys to navigate to "Start" and reboot the device or even try "Recovery Mode" to ensure it worked. I would highly suggest that you boot into recovery and factory reset the device, wiping everything.

*This has been tested and works on the UNLOCKED US variant (Basically, if you can update via the OnePlus website and the build number is DE17AA you're good to go.) DO NOT ATTEMPT THIS ON ANY OTHER CARRIER LOCKED MODEL!!

**While the device is back to stock recovery, the chances are very high that any future OTA's (Full or partial) may not load or install if binaries were altered by Magisk. The best thing to do here is to wait for a full package and install via Oxygen Updater or attempt a partial via Oxygen Updater.

LINK TO IMAGE FILE:

https://www.androidfilehost.com/?w=files&flid=330195