[OnePlus 8 Guides, News, & Discussion] Some_Random_Username:
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 and OP8Pro here are the EDL packages (also known as MSM tools or unbrick tools) that can revive a bricked unlocked OnePlus 8 (except T-Mobile/Sprint IN2017 ones and Verizon IN2019 ones, head to https://xdaforums.com/oneplus-8/how-to/op8-unbrick-tool-to-restore-device-to-t4093043 and https://xdaforums.com/oneplus-8/how-to/op8-unbrick-tool-to-restore-device-to-t4191723 for that)

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:

IN21BA tools (european firmware):

ANDROID 10:

OOS 10.5.1

OOS 10.5.2

OOS 10.5.4

OOS 10.5.6

OOS 10.5.8

OOS 10.5.9

OOS 10.5.10

ANDROID 11:

OOS 11.0

OOS 11.0.1.1

OOS 11.0.2.2

OOS 11.0.3.3

OOS 11.0.4.4

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

IN21AA tools (international firmware):

ANDROID 10:

OOS 10.5.3

OOS 10.5.4

OOS 10.5.7

OOS 10.5.9

OOS 10.5.10

OOS 10.5.11

ANDROID 11:

OOS 11.0

OOS 11.0.1.1

OOS 11.0.2.2

OOS 11.0.4.4

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

IN21DA tools (indian firmware):

ANDROID 10:

OOS 10.5.3

OOS 10.5.4

OOS 10.5.8

OOS 10.5.9

OOS 10.5.10

OOS 10.5.11

ANDROID 11:

OOS 11.0

OOS 11.0.1.1

OOS 11.0.2.2

OOS 11.0.4.4

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

Warning:

As this happened on OnePlus 8 Pro, it is advised to take backup of /persist partition before crossflashing (eg going from International to Indian build) as fingerprint reader may give an error related to enrollment issue. You can do so by using dd if=/dev/block/bootdevice/by-name/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.

On Android 11 MSMs and up Windows 7 users may need to launch 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 international tool or India while using indian tool or EU when using european tool.

Power your device off.

Maintain volume up and volume down keys to get into Qualcomm EDL mode.

Plug your device to your computer using stock OnePlus cable. (You may let volume keys go once done.)

Click on Enum to be sure your device is detected and press Start.

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 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://xdaforums.com/showpost.php?p=83448961&postcount=61, all credits to @Shadow12347 for finding it out.

Credits:

@LL Starks for getting 10.5.3 indian link from OnePlus

@Titokhan for being a friend and providing inspiration in writing

@headsh0t95 for being a friend and suggesting me to request an access to upload files on AndroidFileHost now one year ago for my previous threads

@AndroidFileHost for the hosting

@Zer0De8th for OOS 11.0/11.0.1.1/11.0.2.2/11.0.3.3/11.0.4.4 MSMs.

OnePlus for the device and OS