[OP8][OOS TMO 55CB] Unbrick tool to restore your device to OxygenOS

Apr 25, 2017
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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 and OP8Pro here is the EDL package (also known as MSM tool or unbrick tool) that can revive a bricked OnePlus 8 bought from T-Mobile.

It will only work with T-Mobile variant IN2017

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:

ANDROID 10:

OOS 10.5.7
OOS 10.5.20: Gdrive - AFH (credits to @rzracer2 )
OOS 10.5.21 (credits @LLStarks for finding it)
OOS 10.5.22 (credits @LLStarks for finding it)


Mirror for first and last MSMs: https://onepluscommunityserver.com/

Instructions:

Launch MsmDownloadTool V4.0.exe.

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 TMO.
Press Start button so that it waits for your device to be connected
Power off your device
Maintain volume up and down buttons to get into Qualcomm EDL mode.
Plug your device to your computer.
Should you not manage to do that and have adb access, you can use adb reboot edl instead
Wait ~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

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.microsof...updateid=8ee52ba0-bdef-4009-88cf-335a678dd67a ) 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.

If you can't get into EDL mode by hardware keys, you may use adb reboot edl (will require your phone to still have ADB access)

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.

Credits:

@Some_Ghost for testing 10.5.7 version on his device
@Titokhan for being a friend and providing inspiration in writing
@AndroidFileHost for the hosting
Votton for providing a server as an alternative mirror
OnePlus for the device and OS
 

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sameog

Senior Member
Apr 21, 2010
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San Francisco
You're a gentleman and a scholar! #beast

I just tried to download the package from androidfilehost. No mirrors came up. Still uploading?

Mod edit: Quoted OP shortened for better reading experience!


---------- Post added at 05:05 PM ---------- Previous post was at 05:03 PM ----------

As far as Msm 4.0, here can I get a patched.exe to unlock the bootloader, provided that tmobile didn't close that loophole. Thanks.

Mod edit: Quoted OP shortened for better reading experience!
 
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Apr 25, 2017
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@sameog this sounds to be an issue with AFH as otherwise it wouldn't have given a link.
Please try the alternative mirror I linked to in OP (password for it is at its bottom)

Additionnaly, even if executable is named MsmDownloadTool V4.0.exe its version is 5.1.32 if you go to file properties->details.
Patching executables is way beyond my knowledge, so I cannot assist with that.
 
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sameog

Senior Member
Apr 21, 2010
515
94
48
San Francisco
@sameog this sounds to be an issue with AFH as otherwise it wouldn't have given a link.
Please try the alternative mirror I linked to in OP (password for it is at its bottom)

Additionnaly, even if executable is named MsmDownloadTool V4.0.exe its version is 5.1.32 if you go to file properties->details.
Patching executables is way beyond my knowledge, so I cannot assist with that.
Hi there,

Here's the error message I'm receiving from AFH:

https://androidfilehost.com/?fid=4349826312261793719[/IMG]



Please look into this.

Thanks.
 
Apr 25, 2017
1,258
2,614
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Hi there,

Here's the error message I'm receiving from AFH:

https://androidfilehost.com/?fid=4349826312261793719[/IMG]



Please look into this.

Thanks.
Your attachment is broken, I cannot see any screenshot. I may try to reupload to AFH when I will have time but waiting that, as I said in my previous post, use the other mirror present in the OP.
What is the password of the mirror?

N3v3r S3ttl3 tm
 
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sameog

Senior Member
Apr 21, 2010
515
94
48
San Francisco
Your attachment is broken, I cannot see any screenshot. I may try to reupload to AFH when I will have time but waiting that, as I said in my previous post, use the other mirror present in the OP.
UPDATE: I tried use the mirror and received a failed message. I logged into the mirror server using the given password and the download failed.
 

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Apr 25, 2017
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UPDATE: I tried use the mirror and received a failed message. I logged into the mirror server using the given password and the download failed.
Download works fine for me (I'm in Europe and mirror is in Europe as well), there may be an issue with your ISP in regards to peering agreements to Europe.
Unfortunately I cannot do anything for it. As odd as it seems, you may neeed to VPN to Europe to prevent that issue from happening.
 
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sameog

Senior Member
Apr 21, 2010
515
94
48
San Francisco
Download works fine for me (I'm in Europe and mirror is in Europe as well), there may be an issue with your ISP in regards to peering agreements to Europe.
Unfortunately I cannot do anything for it. As odd as it seems, you may neeed to VPN to Europe to prevent that issue from happening.[/QUOTE

Finally downloaded! My VPN did the trick. Again, thank you for all that you and have done! :good: #rockstar
 

Some_Ghost

Senior Member
Nov 6, 2019
161
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0
Everything works like a champ! Now I can play more with my device. Thanks a lot
How are you getting into edl? are you using button combos? because when I was testing this it took a lot of time and effort and I got into it by chance in the way that is explained in the description. Even on my replacement OP8 I tried to get into edl with numerous button combos with ZERO luck.
 

Alotaibiq8

New member
Sep 22, 2019
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How are you getting into edl? are you using button combos? because when I was testing this it took a lot of time and effort and I got into it by chance in the way that is explained in the description. Even on my replacement OP8 I tried to get into edl with numerous button combos with ZERO luck.

I used the volume up and down buttons to get into the edl and it works every time. Make sure you have the right drivers installed and use the original USB cable. Good luck :good:
 

sameog

Senior Member
Apr 21, 2010
515
94
48
San Francisco
is yours TMobile edition?
Yes, it's the T-Mobile version.

These are files I have in my system to "unbrick:" my device:
1. OnePlus 8 T-Mobile 10.5.7 -- unzipped the file before you proceed (you all knew that)
2. QUD.WIN.1.1+Installer-10037.3+Setup -- this is required. If need this, copy and paste this in google. These drivers were hard to find at first. Unzip the download.

3. OnePlus_USB_Drivers_Setup -- I thought these drivers were unnecessary but they are VERY necessary. (caps for emphasis)
4. When you have unzipped the QUD.WIN.1.1+Installer-10037.3+Setup file and the OnePlus_USB_Drivers_Setup, go through the setup wizard. NOTE: Oneplus will ask you for something like "Wincom" for something of that nature, click next. It threw me as well. When the drivers have all been setup up and installed, perform a reboot to refresh Windows (it's good practice especially when dealing with drivers.

Guys who are having trouble: This is what I did. I powered off the phone completely. Launch the msm download 4.0. When the dialog box comes up, get your phone ready. When the phone is completely off, press and keep the volume up and down button pressed. Plug the small part of usb into the phone. While holding the volume up and down buttons and phone steady, I plugged in the fat end into the other usb port on your computer since we're dealing with unbricking our phone. You will know when connection is made when you hear the windows "attached" sound and you will see a "connected" text in the field on the top in the msm download tool launch box. Click on the connected to highlight this and click start. Do not play with your phone during this time. Let the program do its thing and your phone will automatically reboot when done.

I hope this helps guys. Wordy yes but it beats being confused as hell....
 

Some_Ghost

Senior Member
Nov 6, 2019
161
41
0
Yes, it's the T-Mobile version.

These are files I have in my system to "unbrick:" my device:
1. OnePlus 8 T-Mobile 10.5.7 -- unzipped the file before you proceed (you all knew that)
2. QUD.WIN.1.1+Installer-10037.3+Setup -- this is required. If need this, copy and paste this in google. These drivers were hard to find at first. Unzip the download.

3. OnePlus_USB_Drivers_Setup -- I thought these drivers were unnecessary but they are VERY necessary. (caps for emphasis)
4. When you have unzipped the QUD.WIN.1.1+Installer-10037.3+Setup file and the OnePlus_USB_Drivers_Setup, go through the setup wizard. NOTE: Oneplus will ask you for something like "Wincom" for something of that nature, click next. It threw me as well. When the drivers have all been setup up and installed, perform a reboot to refresh Windows (it's good practice especially when dealing with drivers.

Guys who are having trouble: This is what I did. I powered off the phone completely. Launch the msm download 4.0. When the dialog box comes up, get your phone ready. When the phone is completely off, press and keep the volume up and down button pressed. Plug the small part of usb into the phone. While holding the volume up and down buttons and phone steady, I plugged in the fat end into the other usb port on your computer since we're dealing with unbricking our phone. You will know when connection is made when you hear the windows "attached" sound and you will see a "connected" text in the field on the top in the msm download tool launch box. Click on the connected to highlight this and click start. Do not play with your phone during this time. Let the program do its thing and your phone will automatically reboot when done.

I hope this helps guys. Wordy yes but it beats being confused as hell....
it turns out it was my laptop the whole time I ended up using my aunts computer and it worked 100%
 

paojennes

New member
Jan 3, 2020
3
4
0
OnePlus 8 T-Mobile

Hi, is this tool convert TMobile OnePlus 8 into international oxygen os? Or it is download TMobile stock fireware back to the phone?

Yes, it's the T-Mobile version.

These are files I have in my system to "unbrick:" my device:
1. OnePlus 8 T-Mobile 10.5.7 -- unzipped the file before you proceed (you all knew that)
2. QUD.WIN.1.1+Installer-10037.3+Setup -- this is required. If need this, copy and paste this in google. These drivers were hard to find at first. Unzip the download.

3. OnePlus_USB_Drivers_Setup -- I thought these drivers were unnecessary but they are VERY necessary. (caps for emphasis)
4. When you have unzipped the QUD.WIN.1.1+Installer-10037.3+Setup file and the OnePlus_USB_Drivers_Setup, go through the setup wizard. NOTE: Oneplus will ask you for something like "Wincom" for something of that nature, click next. It threw me as well. When the drivers have all been setup up and installed, perform a reboot to refresh Windows (it's good practice especially when dealing with drivers.

Guys who are having trouble: This is what I did. I powered off the phone completely. Launch the msm download 4.0. When the dialog box comes up, get your phone ready. When the phone is completely off, press and keep the volume up and down button pressed. Plug the small part of usb into the phone. While holding the volume up and down buttons and phone steady, I plugged in the fat end into the other usb port on your computer since we're dealing with unbricking our phone. You will know when connection is made when you hear the windows "attached" sound and you will see a "connected" text in the field on the top in the msm download tool launch box. Click on the connected to highlight this and click start. Do not play with your phone during this time. Let the program do its thing and your phone will automatically reboot when done.

I hope this helps guys. Wordy yes but it beats being confused as hell....