GUIDE TO ROOT ONEPLUS 6/6T [APRIL 2021] via OnePlus 6

  1. Nishant_Surte
    Eclair Jun 26, 2020

    Nishant_Surte , via OnePlus 6 , Jun 26, 2020 :
    *LAST EDIT - 21st May, 2021 - Updated links to TWRP, added steps to flash custom rom as well*
    Requirements - 1. Oneplus 6 running on OxygenOS 10.3.x based on Android 10.
    2. Windows PC
    3. Files :
    Magisk - https://github.com/topjohnwu/Magisk/releases

    TWRP IMAGE file -
    Download twrp-3.5.2_9-0-enchilada.img

    TWRP ZIP file -
    Download twrp-installer-3.5.2_9-0-enchilada.zip

    15 Seconds ADB installer -

    *also, I will update links if there are any updates in the given files*

    *also remember to take a backup of your entire data as this process involves formatting entire data*

    Steps Involved -
    1. Unlocking Bootloader
    2. Replacing stock recovery using TWRP recovery
    3. Flashing Magisk for root access

    Firstly, install 15 seconds ADB installer on your PC.
    Then, copy all the other four files in adb folder (wherever you have installed 15 seconds adb setup).

    Then go to your phone and click on 'build number' several times until you see 'you are now a developer'.
    Then go to developer options and turn on OEM unlocking, USB debugging, and Advanced Reboot.
    Press and hold power button (you will see the option of BOOTLOADER) and boot your device into 'bootloader'.

    UNLOCKING BOOTLOADER (this will erase all your data) : Now on PC open command prompt in adb folder by typing cmd in the address bar (where you have placed all the rooting files), and hit enter. Give command 'fastboot devices'. There, if you see a serial number then your device is properly connected in fastboot mode.
    Now enter the command 'fastboot oem unlock' and hit enter.

    On mobile you will see a screen where it will give you two options - select Unlock the bootloader using volume key and press power key to unlock the bootloader. Once the device boots up complete the initial setup (No need to fill your email etc. for now, skip all that) and go to settings, about phone and tap on build number 7 times. Then go to developer options and there you will see that the oem unlocking option turned on because the bootloader is now unlocked. Now Turn on advanced reboot and USB debugging.

    Now boot your device into bootloader.

    Now on PC, check again if your device is properly connected in fastboot mode or not by giving the command 'fastboot devices' using command prompt.
    If your device is properly connected then the serial number will show up on your pc screen.

    Now on your pc, go to the adb folder and copy the name of the image file.

    Go to command promt and give the command 'fastboot boot (image file name).img [add dot img at the end of the file name as it is an img file]

    And hit enter. Now your device will temporarily boot into TWRP recovery. In TWRP, go to Wipe>Format data>type 'yes' and click on the tick mark on your mobile keyboard.

    Then go the home page of TWRP > reboot > bootloader.
    Again on your pc, give the command fast boot boot (image file name).img and boot back to TWRP Recovery.

    Once you're back to recovery, copy the magisk & TWRP zip files to your mobile from your pc.

    Go ahead and click install TWRP zip and flash it, followed by flashing magisk zip file.

    You can also flash custom ROMs in the same way, the steps are same, you just have to copy the ROM, twrp zip and magisk zip in the internal storage.
    The order of flashing a custom ROM is
    1. ROM.zip,
    2. TWRP.zip (reboot to recovery for slot change)
    3. GApps (if not included in ROM)
    4. Magisk.zip
    5. Wipe>Format data (necessary after installing custom rom, not necessary if you are just rooting device)
    6. Reboot system

    Press home button to come back to the main screen and click Reboot. Click on system.
    Your device will boot up.

    You have now successfully replaced official recovery by TWRP recovery and have properly installed root access on your device.

    This method is tested. However, I'm not responsible for any damages caused to you by you.
    If you have any questions or corrections feel free to comment on this thread.
    Last edited: May 21, 2021

    quaddropop, owk1n, Cary Esq. and 4 others like this.
  2. Artemus.
    Community Hero 2020 Jun 26, 2020

    Artemus. , Jun 26, 2020 :
    Any reason for the Mega link?

    Muhitpias and Caoimhín like this.
  3. Nishant_Surte
    Eclair Jun 26, 2020

    Last edited: Aug 12, 2020

  4. Deactivated User
    Jun 27, 2020

    Caoimhín and Artemus. like this.
  5. Nishant_Surte
    Eclair Jun 27, 2020

    Nishant_Surte , via OnePlus 6 , Jun 27, 2020 :
    Why would i do that? I don't own that website and wth is 'hidden advertising' lmao? Anyway i have updated the link.

  6. Caomhin
    OnePlus 9 Series Expert Community Expert Jun 27, 2020

    Caomhin , via OnePlus 6T , Jun 27, 2020 :
    Nice guide, fair play. 😎[e]1f44d[/e]

    Artemus. and Nishant_Surte like this.
  7. Nishant_Surte
    Eclair Jun 27, 2020

    Caoimhín likes this.
  8. sahil.amanu
    Gingerbread Jul 21, 2020

  9. Nishant_Surte
    Eclair Aug 12, 2020

    Pearland likes this.

  10. #10
    Caoimhín likes this.
  11. sahil.amanu
    Gingerbread Aug 13, 2020

  12. eromore189
    Gingerbread Aug 23, 2020

    eromore189 , via OnePlus 6T , Aug 23, 2020 :
    Question, my OnePlus 6T has the bootloader unlocked and currently on OOS 10.3.5. is it necessary for me to format data after installing TWRP.img file? Wanted to ask before I try this myself. maybe someone has some information on that. thank you.

  13. droidbuntu
    Cupcake Aug 28, 2020

  14. Nishant_Surte
    Eclair Dec 6, 2020

    Nishant_Surte , Dec 6, 2020 :
    Hey, you do not have to format data after installing twrp ZIP file [you can't install .img file on your op6T because of dual partition, hence the zip file]

    Artemus. likes this.
  15. Akilan_R
    Cupcake Dec 22, 2020

  16. Nishant_Surte
    Eclair Dec 25, 2020

  17. Muhitpias
    Donut Dec 26, 2020

    Muhitpias , via OnePlus 6 , Dec 26, 2020 :
    but there is some issue related to twrp. because after flashing twrp, some apps got deleted, settings icon has changed and some regional fonts are not working. i am a rooted user and tried all the steps carefully. but everytime i flashed twrp then i got this issue. so, now i am not using twrp recovery and only root using magisk. though i am not a customised user, thats why.

    i also find this issue in xda. so, it's the issue of twrp.

    Nishant_Surte likes this.
  18. A1phaFr0stW01f
    Cupcake Jan 30, 2021

    A1phaFr0stW01f , Jan 30, 2021 :

    and what if i cant find the device listed in ADB? are there any other options for rooting?

  19. NalydB
    Cupcake Feb 2, 2021

  20. NalydB
    Cupcake Feb 2, 2021

    NalydB , Feb 2, 2021 :
    This worked for me: