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[GUIDE] How to Unroot your OnePlus 3 / 3T and go back completely to stock

  1. calvinistmac Ice Cream Sandwich Jul 21, 2016

    calvinistmac, Jul 21, 2016 :
    Here is version 2.0.1 of this guide!

    VERY IMPORTANT, PLEASE READ!!!

    These instructions will work with all current versions of OOS 4.0 and above, and Open Betas 11 and up. I am not supporting the earlier Open Betas with this guide simply because you shouldn't be running them at this point as there is no need. If you are running an earlier Open Beta and want to unroot and keep that Open Beta you do that at your own risk. I am also not supporting MM any longer with this guide as all of the recoveries have changed around, which can cause headaches.

    IF YOU HAVE A 3T, THESE INSTRUCTIONS WILL WORK, BUT YOU MUST DOWNLOAD THE 3T FILES, NOT FILES MEANT FOR THE 3, OR YOU WILL BRICK YOUR DEVICE.


    DISCLAIMER: I am not responsible for bricked phones or lost data. Please do the appropriate backups of your data and read all of the instructions posted here before you attempt. If you aren't comfortable doing this then don't do it.

    MORE INFO: If you post here asking for help (which is fine by the way), I may or may not be able to help you. I don't have your phone in front of me to help you troubleshoot and I cannot magically fix it over the airwaves. If you follow my steps to the letter you should be fine. Make sure you don't skip anything, and please read the DISCLAIMER again for good measure. I've had a lot of posts asking for help and I can't help everyone unfortunately.

    EVEN MORE INFO: I don't look at this thread all day, every day. If you're asking for support from me and don't get it right away that's the reason. I'm sorry for any inconvenience but it's the way it works. I'm a stay at home dad so that takes up most of my day. I do check it when I can though. Again, sorry if any inconvenience has been caused by my lack of appearance and posts here.

    WHY YES EVEN MORE INFO: If you want to downgrade back to MM it's beyond the scope of this guide. I may make a guide to detail how to do that at another time. There are instructions floating around these wonderful forums about how to do that.



    UNROOTING INSTRUCTIONAL VIDEO (courtesy of @ritchiedrama ):




    That being said, here are the instructions (all commands are typed on a computer using a terminal app (Linux or Mac), or Command Prompt in Administrator mode (Windows)):

    1. Download the current OxygenOS (Stable or Open Beta) full zip from the OnePlus support site: http://downloads.oneplus.net/ PRO TIP: rename your downloaded file to ota.zip, it'll make typing the commands a bit easier. If you have a OnePlus 3, then download the OnePlus 3 files. If you have a OnePlus 3T, then download OnePlus 3T files.
    2. Download the stock recovery for your device: http://oxygenos.oneplus.net.s3.amazonaws.com/recovery_op3.img - OP3 Recovery
    http://oxygenos.oneplus.net.s3.amazonaws.com/recovery_op3t.img
    - OP3T Recovery
    3. Boot into Fastboot Mode (I believe it's power and volume up, or use the extended boot menu from Android to boot here)
    4. Fire up a terminal app or the Windows Command Prompt in Admin mode and make sure you're in the folder/directory where you downloaded the above files on your computer.
    5. Type: fastboot devices -- Just to make sure everything is working. If you see a serial number you're golden. If not check all of your drivers (mostly Windows users will have this issue). There are threads on how to install the drivers within the forums. If you use Linux or a Mac you should already know how to get the proper files on there.
    6. Type: fastboot flash recovery recovery_op3.img (or recovery_op3t.img if you have a 3T) -- This will flash the stock recovery back to the phone.
    7. Type: fastboot oem lock, then follow the prompts on the screen. This will erase the phone. The phone will boot into recovery with chinese characters and wipe the phone clean. When it's done it'll reboot, the second you see that happen hold Volume down to boot into recovery again. If you don't it'll be in an endless bootloop. **
    8. Boot into recovery by holding down power and volume down. It'll boot into stock recovery.
    9. Choose english as the language, very important
    10. There'll be an option to upgrade via sideload. Choose that option. This will put the phone into ADB sideload mode.
    11. Type the following: adb sideload ota.zip
    12. Go grab a cup of coffee or two. It'll take a bit.
    13. Once it's done reboot the phone. The option will be there once the sideloading is done. Just select Reboot and press the power button.
    14. It should boot into stock, unrooted OxygenOS. Congratulations you did it! Enjoy your stock, unrooted device!

    ** After you do the fastboot oem lock command and it erases the phone & reboots, it may bootloop once and then go dark. If that happens hold down the power button until it reboots, or hold down power and volume down until it reboots. It's normal.
     
    Last edited: Feb 19, 2017

    #1
  2. damiandd Honeycomb Jul 21, 2016

    damiandd, Jul 21, 2016 :
    Can you make a video on this ....
     

    #2
  3. calvinistmac Ice Cream Sandwich Jul 21, 2016

    calvinistmac, Jul 21, 2016 :
    I wish I had the equipment. Maybe eventually. :)
     

    #3
  4. pramanayhoga Donut Jul 22, 2016

    pramanayhoga, Jul 22, 2016 :
    To go back to full stick rom, Is this steps works :
    1. Download full Rom.
    2. Flash it in twrp.
    3. Flash stick recovery using fastboot.

    This is my first oneplus device, so have no experience at all here.
     

    #4
  5. calvinistmac Ice Cream Sandwich Jul 22, 2016

    calvinistmac, Jul 22, 2016 :
    Either you didn't read post #1 or you didn't understand it. What you just said here will not bring it back to full stock. If you follow what I said above in post #1 everything will work fine. If you do what you said it'll be a hack job. Don't do what you just said. Please follow the instructions in post #1 to bring it back to full stock.
     

    #5
  6. ritchiedrama Ice Cream Sandwich Jul 22, 2016

    ritchiedrama, Jul 22, 2016 :
    Where are we typing fastboot devices? Are we supposed to be doing that on the phone or in a program?

    I installed ResurrectionRemix and would like to go back I think (so I can use dash charge) - so would your instructions above work?
     

    #6
  7. calvinistmac Ice Cream Sandwich Jul 22, 2016

    calvinistmac, Jul 22, 2016 :
    My above instructions would work. You're typing the commands on your computer. Make sure you follow them in order or you can really mess things up.
     

    #7
  8. ritchiedrama Ice Cream Sandwich Jul 22, 2016

    ritchiedrama, Jul 22, 2016 :
    Yeah, but where? lol you didn't specify thats why I'm confused brotheer :D

    And if I do everything as above in your list, it'll be as if I've just unboxed the phone?
     

    #8
  9. calvinistmac Ice Cream Sandwich Jul 22, 2016

    calvinistmac, Jul 22, 2016 :
    Not trying to be short but if you read the instructions carefully, I did say to fire up a terminal app (Linux or Mac), or the Command Prompt in Administrator mode (Windows), and yes if you do everything above in my list it'll be as though you just unboxed the phone. Fresh and new. Sorry if the instructions weren't completely clear.
     

    #9
  10. ritchiedrama Ice Cream Sandwich Jul 22, 2016

    ritchiedrama, Jul 22, 2016 :
    I just didn't know what terminal app is. But if you'd said command prompt, I would, lol.

    So basically I'd go into the folder those files you said to download, open a command prompt from that folder with those files in and go from there with instructions.

    Do I not need to remove the Custom ROM I've installed first? or anything like that thats the part I'm concerned about.
     

    #10
  11. ritchiedrama Ice Cream Sandwich Jul 22, 2016

    ritchiedrama, Jul 22, 2016 :
    My phone is stuck on you are in sideload mode, when i type adb sideload ota.zip it says starting on port 5037 started successfully and then device not found :/
     

    #11
  12. calvinistmac Ice Cream Sandwich Jul 22, 2016

    calvinistmac, Jul 22, 2016 :
    Sounds like a driver issue to me. Are you on Windows?
     

    #12
  13. calvinistmac Ice Cream Sandwich Jul 22, 2016

    calvinistmac, Jul 22, 2016 :
    You don't need to remove the custom ROM as this procedure completely wipes the phone clean.
     

    #13
  14. ritchiedrama Ice Cream Sandwich Jul 22, 2016

    ritchiedrama, Jul 22, 2016 :
    Sorted it, had to keep unplugging phone and re-plugging in, drivers kept failing, weird as how it detected it before, and thenn when it got to thatr part didn't.

    Thanks for the help mate. Hopefully this worked now.
     

    #14
    G_Niklas_Iivari_PHOh likes this.
  15. calvinistmac Ice Cream Sandwich Jul 22, 2016

    calvinistmac, Jul 22, 2016 :
    No problem, glad you got it sorted and glad to help! I'm going to try and get this thread stickied.
     

    #15
  16. ritchiedrama Ice Cream Sandwich Jul 22, 2016

    ritchiedrama, Jul 22, 2016 :
    It all worked out fine. Now I can get back to setting my phone up. Stock feels more professional and polished, as much as I liked the other ROM i did it mainly to seee if it improved battery and tbh, it didn't.
     

    #16
  17. calvinistmac Ice Cream Sandwich Jul 22, 2016

    calvinistmac, Jul 22, 2016 :
    Yay! Glad it worked out! I was tempted to try Resurrection Remix myself but with the bugginess that people were encountering, I was hesitant. I did try an unofficial Cyanogenmod and that was fine except for signal issues (there is a fix but I didn't do it). I also tried an official AOKP nightly but that darn near hard bricked my phone. I left it rooted on OOS for a bit but things were getting weird so I went back completely stock for now. Maybe I'll go with an official CM13 nightly once it drops in the next day or so to give it a try.
     

    #17
    Sun90 likes this.
  18. pramanayhoga Donut Jul 22, 2016

    pramanayhoga, Jul 22, 2016 :
    Yes i did read your first post completely and fortunately i know all step what you said.
    As i said before, in oneplus device i dont have any experience at all, but in other device and other Rom i usually using steps like i mentioned.
    Emmmm... It seems i was wrong to understand your thread title. Steps that i mentioned are not completely back to stock (because it Will still unlocked bootloader) but only completely unroot.

    Sorry for my mistaken.
     

    #18
  19. calvinistmac Ice Cream Sandwich Jul 22, 2016

    calvinistmac, Jul 22, 2016 :
    No problem, and sorry if I came across short. Have a great day!
     

    #19
    pramanayhoga likes this.
  20. dswwong Gingerbread Jul 24, 2016

    dswwong, Jul 24, 2016 :
    Can the originator of this thread please elaborate on point 4.
    I don't quite understand what it means.
     

    #20