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Unrooting Oneplus 8T

Hey guys, I want to unroot my phone and lock the bootlodaer.
downloading the latest software from OnePlus's site and flashing with local upgrade in the system updates setting should be enough? (and of course locking the bootloader afterwards)
Or should i take more steps like uninstalling magisk and restoring images?
Thanks!

Doesnt MSMTools restore the phone to original settings?

orma1 said:
Hey guys, I want to unroot my phone and lock the bootlodaer.
downloading the latest software from OnePlus's site and flashing with local upgrade in the system updates setting should be enough? (and of course locking the bootloader afterwards)
Or should i take more steps like uninstalling magisk and restoring images?
Thanks!
Click to expand...
Click to collapse
https://forum.xda-developers.com/t/...l-to-restore-your-device-to-oxygenos.4180837/ <<< look at this thread and read carefully and do all this step correctly and your phone is unrooted and bootloader is also locked

GraveDigger176 said:
https://forum.xda-developers.com/t/...l-to-restore-your-device-to-oxygenos.4180837/ <<< look at this thread and read carefully and do all this step correctly and your phone is unrooted and bootloader is also locked
Click to expand...
Click to collapse
Quick question, the oos version listed there is older than what I have currently.
Can I just download the latest version from Oneplus's website and use that?

orma1 said:
Quick question, the oos version listed there is older than what I have currently.
Can I just download the latest version from Oneplus's website and use that?
Click to expand...
Click to collapse
Download the latest MSN tool flash it as it mentioned in the instructions and after it boots update via OTA to your latest OOS
Remember that you download the MSN tool for your phone

MSN tool can't seem to detect my phone any idea why?
It seems I triggered the edl mode as the pc detects qualcomm instead of oneplus as the device.
for now i booted the phone normally

Have tap the enrum button ? And your PC detected right in edl mode your phone should listed as Qualcomm 9008 when I remember right and in MSN tool should it shown as detected if not tap the enrum button in MSN tool

GraveDigger176 said:
Have tap the enrum button ? And your PC detected right in edl mode your phone should listed as Qualcomm 9008 when I remember right and in MSN tool should it shown as detected if not tap the enrum button in MSN tool
Click to expand...
Click to collapse
I did not tap the enum button as it said nothing about that in the tutorial.
The device was not detected as Qualcomm 9008 it was Qualcomm and a lot of letters and numbers.
I will try again with the enum button later when I don't need to use the phone

orma1 said:
I did not tap the enum button as it said nothing about that in the tutorial.
The device was not detected as Qualcomm 9008 it was Qualcomm and a lot of letters and numbers.
I will try again with the enum button later when I don't need to use the phone
Click to expand...
Click to collapse
You phone must be listed as
QDLOADER 9008.
If it shows up as QHUSB_BULK, it means Qualcomm driver wasn't installed. Look how is it listed if it not QDLOADER 9008 then drivers are missing

GraveDigger176 said:
You phone must be listed as
QDLOADER 9008.
If it shows up as QHUSB_BULK, it means Qualcomm driver wasn't installed. Look how is it listed if it not QDLOADER 9008 then drivers are missing
Click to expand...
Click to collapse
if it is listed as QHUSB_BULK how can I install the driver?

As i write before, read this >>>> https://forum.xda-developers.com/t/...l-to-restore-your-device-to-oxygenos.4180837/ carefully and follow the instructions, all is inside in first post. You need the Qualmcomm drivers, the download is mentoined and linked in this thread.

GraveDigger176 said:
As i write before, read this >>>> https://forum.xda-developers.com/t/...l-to-restore-your-device-to-oxygenos.4180837/ carefully and follow the instructions, all is inside in first post. You need the Qualmcomm drivers, the download is mentoined and linked in this thread.
Click to expand...
Click to collapse
installing the drivers like you said seemed to do the trick.
My phone is now working.
Thank you very much!

orma1 said:
installing the drivers like you said seemed to do the trick.
My phone is now working.
Thank you very much!
Click to expand...
Click to collapse
Glad you got it working you're welcome

msm tool unroot- stuck on waiting for device

I am trying to use the msm tool to unroot my OnePlus 8t tmobile variant. Using the MSM tool I have run into a few different problems.
1. Drivers. When my phone is in edl mode plugged in to my computer, device manager recognizes it as usb_bulk. I tried using the provided .cab file to update windows Qualcomm drivers but windows could not ever find the files when updating. I found on another forum a automatic installer.
2. Although it now says Qualcomm 9008 windows says that driver digital signature is not recognized or corrupted. However the MSM tool does finally show COM 5 and when I plug in my device is stuck at waiting for device.
I'm pretty stuck right now and any information to help me out would be appreciated.

You need to disable driver signature verification in windows to successfully install drivers.
[Guide] Fix Device Not Showing Up In Fastboot Mode (Windows 10/11)
You sir are saint...I've been trying to get fastboot to recognize my OP6T for the last 8 hours. Thank you so much!
forum.xda-developers.com

Rootk1t said:
You need to disable driver signature verification in windows to successfully install drivers.
[Guide] Fix Device Not Showing Up In Fastboot Mode (Windows 10/11)
You sir are saint...I've been trying to get fastboot to recognize my OP6T for the last 8 hours. Thank you so much!
forum.xda-developers.com
Click to expand...
Click to collapse
thank you I tried this and it still didnt work eventually i went into the registry and deleted lowerfilter, and now the drivers work however,
I am faced with another issue. The MSM tool says ddr not automatically detected and wont continue so we are now trying solve this issue

mreese14 said:
thank you I tried this and it still didnt work eventually i went into the registry and deleted lowerfilter, and now the drivers work however,
I am faced with another issue. The MSM tool says ddr not automatically detected and wont continue so we are now trying solve this issue
Click to expand...
Click to collapse
I have encountered this error and what I found was that there are some people, me being one where you need to disable your network and change your PC date to December 2018 and then open msm and proceed.

gforceriders said:
I have encountered this error and what I found was that there are some people, me being one where you need to disable your network and change your PC date to December 2018 and then open msm and proceed.
Click to expand...
Click to collapse
Worked for me, thank you!

[OP8T TMO KB2007] Brick. Need help.

OnePlus 8T+ 5G T-Mobile KB2007
My phone has become a brick. 3 days have been trying to restore it. Can't find the solution...
What issues I have:
- no "QHUSB_BULK" in Device Manager
- no "Qualcomm HS-USB QDLoader 9008" in Device Manager
- MSM tool doesn't see my phone
- EDL mode doesn't load
- fastbootd doesn't load
- all fastboot roms show a lot of errors during installation
Works only usual fastboot.
What can you recommend me to try? Thank you!

UP. Any thoughts? Any suggestions? Please!

Svobodniy_ said:
UP. Any thoughts? Any suggestions? Please!
Click to expand...
Click to collapse
It might help if you shared what you've actually done (what you did that resulted in bricking and what you've done to try fixing things) in detail. Include versions of software and source.

BillGoss said:
It might help if you shared what you've actually done (what you did that resulted in bricking and what you've done to try fixing things) in detail. Include versions of software and source.
Click to expand...
Click to collapse
It's complicated, because I tried a lot of ROMs from this forum and from other sources... The main problems, that MSM doesn't see my phone if I want to install ROM through MSM, and Fastboot give a lot of errors, if I want to install ROM through Fastboot...
How I brick my phone? I used file from OnePlus to unlock the bootloader (before it I unlock my phone from T-Mobile). After that all my data was wiped and I decided to change ROM from T-Mobile's to Global. I tried one of the ROM's (I don't remember which, but one from this forum). And my phone became a brick. (previously in my life I reinstalled a lot of ROMs on my Samsung Galaxy S2, Samsung Galaxy S4 - and have no issues, but this time...)

Use EDL to recover. You can get to fastboot, so you are not hard bricked. Make sure drivers are installed properly, try a different computer/cable

Svobodniy_ said:
OnePlus 8T+ 5G T-Mobile KB2007
My phone has become a brick. 3 days have been trying to restore it. Can't find the solution...
What issues I have:
- no "QHUSB_BULK" in Device Manager
- no "Qualcomm HS-USB QDLoader 9008" in Device Manager
- MSM tool doesn't see my phone
- EDL mode doesn't load
- fastbootd doesn't load
- all fastboot roms show a lot of errors during installation
Works only usual fastboot.
What can you recommend me to try? Thank you!
Click to expand...
Click to collapse
It seems, on PC side of things you don't have drivers properly installed, otherwise you wouldn't have
- no "QHUSB_BULK" in Device Manager
- no "Qualcomm HS-USB QDLoader 9008" in Device Manager.
For the same reason, i presume MSM doesn't see your phone.

Bricked My phone, cant get into FastbootD to fix it

So i recently wanted to root my OOS 12 oneplus nord, and i bricked it..
i cant get into fastbootD, Recovery, or anything at all except fastboot, the device is detected as Android bootloader interface in device manager, i have tried using: msm tool, flashing normal rom (error: partition not found and Flashing is not allowed for critical partition)

As a last resort, this worked for me : [OPNORD][OOS AC01AA/BA/DA] Unbrick tool to restore your device to OxygenOS

Azeld said:
As a last resort, this worked for me : [OPNORD][OOS AC01AA/BA/DA] Unbrick tool to restore your device to OxygenOS
Click to expand...
Click to collapse
As I said, msm didn’t work for me

Hafted said:
As I said, msm didn’t work for me
Click to expand...
Click to collapse
may be need to reinstall drivers? should be displayed differently in the device manager than Android bootloader interface.

gorro8 said:
may be need to reinstall drivers?
Click to expand...
Click to collapse
Nope, I can’t get it into edl mode, I did manage once but I got the you need to restart error and I couldn’t get it back there

Hafted said:
Nope, I can’t get it into edl mode, I did manage once but I got the you need to restart error and I couldn’t get it back there
Click to expand...
Click to collapse
what do you do to enter the edl mode?
what cable are you using?

gorro8 said:
what do you do to enter the edl mode?
what cable are you using?
Click to expand...
Click to collapse
Using official one plus cable, I hold bot volume keys for about 40 seconds, then connect the cable and only then I let my hands go off the keys

I found a problem similar to yours. they say it's the wrong driver
[Bricked] OP8 : FASTBOOT rom : 'Flashing is not allowed for Critical Partitions
I messed up trying to install TWRP on c.17 OOS12 Now the mobile is bricked. 1. I tried the MSM tool, it shows the COM PORT but doesnt do anything. Just stuck at waiting for device. 2. I tried the ALL IN ON TOOL, but getting "UNHANDLED...
forum.xda-developers.com

download the correct drivers and replace them in the device manager

gorro8 said:
I found a problem similar to yours. they say it's the wrong driver
[Bricked] OP8 : FASTBOOT rom : 'Flashing is not allowed for Critical Partitions
I messed up trying to install TWRP on c.17 OOS12 Now the mobile is bricked. 1. I tried the MSM tool, it shows the COM PORT but doesnt do anything. Just stuck at waiting for device. 2. I tried the ALL IN ON TOOL, but getting "UNHANDLED...
forum.xda-developers.com
Click to expand...
Click to collapse
Ok, I’ll try that and give you an update, Ty!

worth trying another USB port too, even if they are supposed to be the exact same. Same thing happened with my laptop, tried another (presumably identical) USB port and it works first time, every time

Hafted said:
Using official one plus cable, I hold bot volume keys for about 40 seconds, then connect the cable and only then I let my hands go off the keys
Click to expand...
Click to collapse
1st, u really should find the exact drivers. But also very important to remember booting your PC into Test Mode with Driver Signature Enforcement OFF - BEFORE installing the EDL 9008 Drivers for your device.
Besides, after you press and hold both Vol buttons, u should plug the device in IMMEDIATELY, not waiting for 40 seconds, since each time the device boots into EDL mode, if there's no connection is established in 5 seconds , the device will automatically out of EDL mode.

Hey, so after some time (I got a new phone by now) I managed to fix it, turns out that i had to instantly put in the cable, just like how LinhBT Said
LinhBT said:
waiting for 40 seconds, since each time the device boots into EDL mode, if there's no connection is established in 5 seconds , the device will automatically out of EDL mode.
Click to expand...
Click to collapse

Here is something that might work for unbricking and/or getting in to EDL-mode:
Unable to reinstall Oxygen OS from custom ROM. FAILED (remote: Flashing is not allowed for Critical Partitions ). Need assistance, details below.
Hello, friends. So I am here following this exact tutorial : https://www.thecustomdroid.com/oneplus-nord-oxygenos-restoration-guide/ I currently am stuck there @pop-os:~/Desktop/platform-tools_r31.0.2-linux/platform-tools/Partition-image$...
forum.xda-developers.com

OnePlus 8T Kona stuck in fastboot

Hi all,
My OP8T got stuck at fastboot screen ,i tried several ways from msm tool finally found that all fastboot file available in the net was for kebab and mine is kona. So the msm tool returns "param preload" with "device not match image" error.While searching more about the difference found that kebab comes with 855qc and lpdram4 but kona comes with 865qc and lpdram5. Im now stuck n fastboot screen more than a week. Can anyone guide me or point me for this device fasboot rom??? Or else how to recover fom this? Need urgent help.

Arunraj90 said:
Hi all,
My OP8T got stuck at fastboot screen ,i tried several ways from msm tool finally found that all fastboot file available in the net was for kebab and mine is kona. So the msm tool returns "param preload" with "device not match image" error.While searching more about the difference found that kebab comes with 855qc and lpdram4 but kona comes with 865qc and lpdram5. Im now stuck n fastboot screen more than a week. Can anyone guide me or point me for this device fasboot rom??? Or else how to recover fom this? Need urgent help.
Click to expand...
Click to collapse
Does it connects to a PC?
If it does type fastboot reboot edl

It connects to PC thats why its returning this error na, and in port it shows qualcom 9008. All drivers were installed corretly . If kona oneplus8T fastboot vailable can someone share.

Arunraj90 said:
Hi all,
My OP8T got stuck at fastboot screen ,i tried several ways from msm tool finally found that all fastboot file available in the net was for kebab and mine is kona. So the msm tool returns "param preload" with "device not match image" error.While searching more about the difference found that kebab comes with 855qc and lpdram4 but kona comes with 865qc and lpdram5. Im now stuck n fastboot screen more than a week. Can anyone guide me or point me for this device fasboot rom??? Or else how to recover fom this? Need urgent help.
Click to expand...
Click to collapse
The OnePlus 8T code name is kebab, but you won't find that name on the phone itself. But it's used in LineageOS and in custom rom/recovery builds.
The SoC of the 8T is called kona and you'll see this on the bootloader screen and in some system properties like ro.product.board.
The 8T has a Snapdragon 865 5G chipset.
Earlier versions of the 8T used DDR4 storage, newer ones use DDR5.
I've found that l often have to reinstall drivers for the 8T on my PC when things go wrong. So if your PC isn't properly recognising your phone, it may be helpful to reinstall the appropriate driver.
And one more point: don't post the same question in multiple places. See rule "5. Create a thread topic or post a message only once" in https://forum.xda-developers.com/t/xda-developers-forum-rules.4200559/

Device name in ports shows correctly. Msmdownloader also detecting after preprocessing returns with "Device not match image". Tried EU IN O2 roms, but same error occurs. o if anyone knows the exact problem kindly help. And also kindly share working driver for one plus 8T for msm downloader, so that i can check again.

Arunraj90 said:
Hi all,
My OP8T got stuck at fastboot screen ,i tried several ways from msm tool finally found that all fastboot file available in the net was for kebab and mine is kona. So the msm tool returns "param preload" with "device not match image" error.While searching more about the difference found that kebab comes with 855qc and lpdram4 but kona comes with 865qc and lpdram5. Im now stuck n fastboot screen more than a week. Can anyone guide me or point me for this device fasboot rom??? Or else how to recover fom this? Need urgent help.
Click to expand...
Click to collapse
Change the data cable and install drivers manually again L2 drivers try on different USB port

jahanzaiblohani said:
Change the data cable and install drivers manually again L2 drivers try on different USB port
Click to expand...
Click to collapse
Tried original cable, Ambrane brand cable, Samsung cable. Can you share me the drivers? What is L2 drivers?

jahanzaiblohani said:
Change the data cable and install drivers manually again L2 drivers try on different USB port
Click to expand...
Click to collapse
Tried original cable , samsung cable, and one 3rd party branded cable no use. Can you share me the driver? What is L2 drivers?

Here is the log file of msmdownloader. This is the latest one. Can anyone find what's the problem?

Arunraj90 said:
Tried original cable , samsung cable, and one 3rd party branded cable no use. Can you share me the driver? What is L2 drivers?
Click to expand...
Click to collapse
I got the QCOM driver I use from here: https://www.catalog.update.microsoft.com/Search.aspx?q=qualcomm hs usb 9008
And the one I downloaded is shown in the attached screenshot. I used that one because it's newer than the bottom one and is for 64-bit Windows.