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[OP8T][OOS KB05AA/BA/DA] Unbrick tool to restore your device to OxygenOS

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YulNicolai

Member
Feb 15, 2021
40
2
I was able to start the phone using smt, but now my fingerprint does not work and the IMEI is missing. IMEI restored, but the fingerprint is still not working.
You need a persist.img file. (OnePlus 8t India (KB 2001)
 

sniper_rifle

Member
May 21, 2018
14
4
Hello.

I am in need of serious help. I bricked my Oneplus 8t by trying to relock my bootloader and revert back to oxygen os from EVO X. Currently there is this showing up "Your device is corrupt. It can't be trusted and will not boot" and I can't even load into recovery mode. People have suggested me to use this msm tool, but it fails to recognize my device. Please help someone. Thanks.
 

GraveDigger176

Senior Member
Oct 17, 2011
1,594
1,598
Koblenz
HTC One X
HTC One (m7)
Hello.

I am in need of serious help. I bricked my Oneplus 8t by trying to relock my bootloader and revert back to oxygen os from EVO X. Currently there is this showing up "Your device is corrupt. It can't be trusted and will not boot" and I can't even load into recovery mode. People have suggested me to use this msm tool, but it fails to recognize my device. Please help someone. Thanks.
You have to install the Qualcomm drivers disable the driver signature in windows power off your phone and reboot in edl mode (please use Google for the right button combination) or read the complete instructions here in this thread
 

Fif_

Senior Member
Jun 5, 2013
1,148
1,210
Google Nexus 10
Google Nexus 4
Hello.

I am in need of serious help. I bricked my Oneplus 8t by trying to relock my bootloader and revert back to oxygen os from EVO X. Currently there is this showing up "Your device is corrupt. It can't be trusted and will not boot" and I can't even load into recovery mode. People have suggested me to use this msm tool, but it fails to recognize my device. Please help someone. Thanks.
You may not need MSM at all, as long as you can get into fastboot, and you're unlocked:
 
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sniper_rifle

Member
May 21, 2018
14
4
You have to install the Qualcomm drivers disable the driver signature in windows power off your phone and reboot in edl mode (please use Google for the right button combination) or read the complete instructions here in this thread
Thank you so much. I had been going through a panic attack for the past few hours already, but you actually managed to bring this phone back to life. I really do congratulate you, thank you!
 
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Jan 8, 2017
7
2
Wow guys, I am beside myself, I really seem to have bricked my phone entirely.. any help appreciated. KB2005, unlocked bootloader, was rooted and tried to do an OTA but it failed, eventually got stuck in a bootloop to where I could only get into recovery. I tried to flash the original boot.img but i was still stuck in only recovery.

I tried to use the MSM tool in this thread to restore, and ever since I connected the phone to the PC in EDL mode by holding the volume buttons down and connecting the cable, I can't ge the phone to do anything. It doesn't seem like the MSM tool recognizes it, I keep getting "automaticc detection of DDR failed." The phone shows up in device manager Qualcomm HS-USB QDLoader 9008 (COM4)

I am freaking out, I think I really screwed up. Please, if anyone could help, it would mean the world to me.

Edit: NVM, I jumped the gun, I guess it was stuck in some mode other than EDL, I eventually got it to be responsive and got it into EDL proper. Appears to have worked, thank you so much for this guide OP.
 
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Screenshot_1.png

any ideas?
 

presentlyroyal

New member
Sep 19, 2021
2
0
OnePlus 8T
How does MSM work with the A/B partition that the 8T uses? Can I get it so that I can boot off both partitions?

I fixed a soft-brick earlier with the global MSM version after switching to my B partition (A wouldn't work). As I understand, an OTA update should fix my A partition but when I performed the update and swapped back to partition A, I got the qualcomm crashdump error again. Perhaps I have a fundamental misunderstanding of how the partitions work. Can anyone help?
 

Fif_

Senior Member
Jun 5, 2013
1,148
1,210
Google Nexus 10
Google Nexus 4
How does MSM work with the A/B partition that the 8T uses? Can I get it so that I can boot off both partitions?

I fixed a soft-brick earlier with the global MSM version after switching to my B partition (A wouldn't work). As I understand, an OTA update should fix my A partition but when I performed the update and swapped back to partition A, I got the qualcomm crashdump error again. Perhaps I have a fundamental misunderstanding of how the partitions work. Can anyone help?
MSM will overwrite the entire device. Both A and B partitions will be overwritten.
 

presentlyroyal

New member
Sep 19, 2021
2
0
OnePlus 8T
MSM will overwrite the entire device. Both A and B partitions will be overwritten.
So the A/B partition is replaced with a single partition? Do you know if there's a way to restore it? My apologies if these questions seem inane, I appreciate your reply :)

Edit: I guess what I'm confused about is why I can't boot from the "other" partition after switching. I've read about others switching partitions via fastboot after an update failed, am I missing a step?
 
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BillGoss

Senior Member
Sep 2, 2010
4,812
4,267
Sydney
OnePlus 3T
OnePlus 8T
So the A/B partition is replaced with a single partition? Do you know if there's a way to restore it? My apologies if these questions seem inane, I appreciate your reply :)

Edit: I guess what I'm confused about is why I can't boot from the "other" partition after switching. I've read about others switching partitions via fastboot after an update failed, am I missing a step?
The only time you can boot from either slot (based on what I've done) is if both slots are running the same firmware and software version.
Since OTAs update the inactive partition, you'll not be able to boot the current slot after you've booted the updated system.

Note that the system, system_ext, vendor, product, and odm are virtual partitions (they are all created dynamically in the super partition) and there's only enough space in super to hold one complete set of these partitions, not one set for each slot.

It helps to remember that the A/B setup is to allow seamless updates, not hold two versions of the OS.
 
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49thJedi

New member
Oct 25, 2018
1
0
Is it possible to delete EDL mode through, being honest, reckless rushing/idiocy? Tried a full battery kill, tried to plug+vol buttons dozens of times. 8P just jumps immediately into FB mode.
 

Mcordcc

New member
Feb 11, 2020
4
0
Dominican Republic
OnePlus 8T
Is it possible to delete EDL mode through, being honest, reckless rushing/idiocy? Tried a full battery kill, tried to plug+vol buttons dozens of times. 8P just jumps immediately into FB mode.
That's what's happening to me too. Im trying EDL, i looked for commands to enter through fastboot, using TWRP, the key combos, but they don't do nothing. At least I got COM4 recognized in MSM but I can't seem to bring my phone back to life. I tried updating the firmware with the packages through TWRP but can't. Also tried to just flash another rom but I still get sent back to fastboot. I'm tired, I don't really know how my phone got to this.
 

Mcordcc

New member
Feb 11, 2020
4
0
Dominican Republic
OnePlus 8T
That's what's happening to me too. Im trying EDL, i looked for commands to enter through fastboot, using TWRP, the key combos, but they don't do nothing. At least I got COM4 recognized in MSM but I can't seem to bring my phone back to life. I tried updating the firmware with the packages through TWRP but can't. Also tried to just flash another rom but I still get sent back to fastboot. I'm tired, I don't really know how my phone got to this.
Also, the bootloader menu doesn't show baseband and bootloader version, and in TWRP it just says "unknown".
 

Fif_

Senior Member
Jun 5, 2013
1,148
1,210
Google Nexus 10
Google Nexus 4
Is it possible to delete EDL mode through, being honest, reckless rushing/idiocy? Tried a full battery kill, tried to plug+vol buttons dozens of times. 8P just jumps immediately into FB mode.

That's what's happening to me too. Im trying EDL, i looked for commands to enter through fastboot, using TWRP, the key combos, but they don't do nothing. At least I got COM4 recognized in MSM but I can't seem to bring my phone back to life. I tried updating the firmware with the packages through TWRP but can't. Also tried to just flash another rom but I still get sent back to fastboot. I'm tired, I don't really know how my phone got to this.
Did you try reflashing with fastboot:
Please read both both in full before starting anything.
 

Mcordcc

New member
Feb 11, 2020
4
0
Dominican Republic
OnePlus 8T
Did you try reflashing with fastboot:
Please read both both in full before starting anything.
Yes, that's what started my problem. I don't know if maybe I did it wrong or something. When I dump the payload there are a lot more images than usual, and I tried flashing them. Apparently it worked but my phone restarted into fastboot and never really installed OOS correctly. Maybe I did it wrong, since I only found one guide, and there were fastboot commands lacking in that guide.
 

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  • 1
    Thank you, Some_Random_Username
    I use the MSM tool to reset OnePlus 9 Pro. My phone was Locked/UnRooted.
    I use the tool with Windows 11 x64 , Usb 3.0. My laptop does not have usb 2.0.
    I was nervous about it, but it worked fine. When you got "QDLOADER 9008" in Device Manager you are good to go.
    Follow the steps in OP and enjoy your phone.
    1
    It is mentioned under "Why is my device getting in Qualcomm crashdump mode in spite of a successful download?" You have to use the H2OS MSMtool for your device. Newer manufactured devices cant use the OOS MSMtool anymore.
    It worked for me, bro!! I was having the same crash dump issue when I tried OOS MSM tool. H2OS fixed it. Thanks to you brothermen!!
  • 29
    Disclaimer: By attempting any of the processes listed in this thread you accept full responsibility for your actions. I will not be held responsible if your device stops working, catches fire, or turns into a hipster and claims to have been modified before it was cool.

    Hi everyone, similar to the previous threads for
    OP3, OP3T, OP5, OP5T, OP6, OP6T, OP7, OP7PRO, regular OP7T, T-Mobile OP7T, regular OP7TPRO, T-Mobile OP7TPro 5G, regular OP8, T-Mobile OP8, OP8Pro and OP Nord here are the EDL packages (also known as MSM tools or unbrick tools) that can revive a bricked OnePlus 8T.

    You should also be able to rollback your phone to a previous release of OOS with them if for some reason you want to go back to an older firmware :)

    You can download the following versions:

    KB05AA tools (international firmware):
    ANDROID 11:


    KB05BA tools (european firmware):
    ANDROID 11:


    KB05DA tools (indian firmware):
    ANDROID 11:


    Tips:

    While crossflashing does not seem to break your /persist unlike on 8-series, it is advised that you back it up before attemting to do so as fingerprint reader may give an error related to enrollment issue. You can do so by using dd if=/mnt/vendor/persist of=/sdcard/persist.img (you must have root access, which is not something I'm going to explain here) and moving it to your computer/cloud.

    Instructions:

    Launch MsmDownloadTool V4.0.exe.
    Windows 7 users may use MsmDownloadTool V4.0_Win7.exe instead, but it hasn't been tested.


    On the login prompt select "Other" in the dropdown menu and click on Next.
    Wait a few seconds until main window shows up.
    Click on Target button and select O2 while using global tool or India while using indian tool or EU when using european tool.
    Press Start button (this is done so that device will be "captured" automatically by tool instead of going back to normal boot after 10 seconds)

    Power your device off.
    Let it cool down for one minute.
    Hold both volumes in to get in Qualcomm EDL mode and the screen will stay black. While holding, plug in the USB cable from your phone to your computer. Let volumes go alter plugged in.
    Wait some time (should not be longer than ~300 seconds).
    Enjoy your brand new device.

    FAQ:

    Does this work on Mac or on Linux?

    Unfortunately no, tool is Windows only. You should need at least Windows 7.

    Why is my antivirus freaking out when unzipping the archive or running the tool?

    In an effort to protect reverse engineering from being done (and by extension prevent conversion process like it was done on 6T and 7Pro), OnePlus now use VM Protect V3 in their MSM tools. As this tries to detect debug environment, this is seen as malicious behaviour by some antivirus.

    My device isn't detected when I click on "Enum" button

    Go to device manager and make sure your phone shows up as QDLOADER 9008.
    If it shows up as QHUSB_BULK, it means Qualcomm driver wasn't installed automatically by Windows Update. Download the latest one from Microsoft website at http://download.windowsupdate.com/c..._fba473728483260906ba044af3c063e309e6259d.cab (source https://www.catalog.update.microsoft.com/Search.aspx?q=qualcomm hs usb 9008 ) and install it manually by right clicking on QHUSB_BULK and selecting "Update driver software" and "Browse my computer for driver software" to where you downloaded CAB file.

    MSM tool is stuck on "Param pre-processing"

    Ensure you're using the Qualcomm drivers linked above.

    MSM tool is stuck on "Sahara communication failed"

    Unplug your phone, get in fastboot mode, turn off phone, wait 15 secondes and get back in Qualcomm EDL mode. You can also try using a USB 2.0 port instead of a 3.0 one.

    What is SMT Download mode?

    Just don't try to unlock that mode, it will wipe your IMEI and your Widevine certificate if you use it.

    How can I fix "SMT config not found" error?

    Please refer to https://forum.xda-developers.com/showpost.php?p=83448961&postcount=61, all credits to @Shadow12347 for finding it out.

    Why is my device getting in Qualcomm crashdump mode in spite of a successful download?

    Your unit was most likely manufactured after March 9th 2021, see https://forum.xda-developers.com/t/...ice-to-oxygenos.4180837/page-14#post-84789741 for reference. You therefore need to use HydrogenOS 11.0.7.12 MSM to recover your device linked at https://www.oneplusbbs.com/thread-5886794-1.html (mirrored at https://mega.nz/file/O8UySbgR#cXGlHkdA_7CYEhKIrek9zzAEwJ7Vx1D5BZdemnPlvGE by @pikatenor ). Getting new OxygenOS MSM tools is nowadays impossible unless you own the device it is meant for, so OP will not be updated to add new OxygenOS MSM tools allowing to workaround this issue. Feel however free to reach out to me in DM if you would like to get told how to maximise your chances to obtain one.

    Credits:

    @viperbjk for KB05AA and KB05BA OOS 11.0 files
    @LLStarks for KB05AA OOS 11.0.1.2 file
    @FullOfHell for testing 11.0 KB05AA tool and downgrade possibility
    Votton for providing a server as an alternative mirror
    OnePlus for the device and OS
    9
    Finally, I just got the MSM Tool mentioned in that post and was able to get my phone back to H2OS!

    Here is the link for those who don't have a OnePlus account or Baidu account:
    (Note that this is for H2OS 11.0.7.12.KB05, not OxygenOS.)

    Hope this helps someone out there.

    I have also noticed few tips when using MSM Tools:
    - If you get a "packed image not exist" error, make sure that your downloaded path does not contain multi-byte characters
    - If downloading image to the phone fails in progress, you can try again by checking the "Use Firehose Lite" option (to use little slower and safer protocol)
    7
    Seeing "Automatic detection of DDR failed" and "Waiting for device" in a red font. Anything I should do? I believe I have the correct drivers installed as it's listed as Qualcomm HS-USB QLOADER 9008 (COM3) in device manager.

    ---------- Post added at 06:51 AM ---------- Previous post was at 06:34 AM ----------



    Did you end up finding a solution for the "Automatic Detection of DDR failed" issue?

    ---------- Post added at 06:54 AM ---------- Previous post was at 06:51 AM ----------



    Sorry to spam, did you find a solution?

    Nevermind! I think I fixed it but I'm not sure just yet.

    I had the same issue " automatic detection of ddr failed"

    I was not able to get into fastboot or recovery and the OS was constantly in a bootloop

    I was able to get the device working using the following steps:

    1. Boot the device (let it bootloop)
    2. Ensure the device shows up properly in Device manager. (might need to disable driver enforcement in win10 )
    3. Start the MSM tool and start and let it wait for device
    4. Connect the device using the Oneplus cable
    5. It should show as connected now.
    6. Boot to edl mode using Power button + Vol up +Vol down(with cable connected)
    7. Now the MSM tool should take care of the rest

    Took me literally 10 hours to get this right. Hope this helps someone.

    Cheers.
    6
    Added OOS 11.0.5.6 MSMs for all regions.
    3
    Finally, I just got the MSM Tool mentioned in that post and was able to get my phone back to H2OS!

    Here is the link for those who don't have a OnePlus account or Baidu account:
    (Note that this is for H2OS 11.0.7.12.KB05, not OxygenOS.)

    Hope this helps someone out there.

    I have also noticed few tips when using MSM Tools:
    - If you get a "packed image not exist" error, make sure that your downloaded path does not contain multi-byte characters
    - If downloading image to the phone fails in progress, you can try again by checking the "Use Firehose Lite" option (to use little slower and safer protocol)
    For those who had problem with oneplus 8t released after March 2021,this new version of MSM Tools will fix it can goes back to HydogenOS stock.After that if you prefer oxygen OS just download a update zip and update from there.