How To Guide Restore OnePlus 9 to Stock via Fastboot Commands

[EtherealRemnant]

Hey guys,
I followed the guide but my phone keeps booting to bootloader each time I restart it... Tried flashin several times - all flashed ok but can't get past bootloader... any deas? I'm on LE2123

Use the MSM Tool. People need to stop using fastboot, it's a sure fire way to an unbootable phone.

 

[mrk2815]

thanks for the guide on the fastboot commands to get bback to stock using fastboot commands and the payloader bin dump tools . i was able to get my one plus 8t back to stock using the steps that you highlighted. again thanks for the guided steps.

 

[TrumpXi]

earlier I tried this guide's method but it put my phone into a hard brick and MSM Tools reports a sahara error so I sent it back to OP for repair. Will recommend against the method and MSM restore instead, tho if you know what ur doing u could try this guide..

Based on what I see this method is no good for bricked devices -- I saw this droid win site ripping the XDA forum https://www.droidwin.com/unbrick-oneplus-9-pro-fastboot-commands/ that falsefully state this method can save my brick. And after `fastboot reboot fastboot` it only turned my bootloader bootloop into a hard brick.

 

[letroll59]

@Slikkster2k thank for you post, you 're the boss !​

 

[MattsSoScene]

If you want, you can do the flashing easily with powershell, rather than running each command one after the other. Here is what I did:

1. Have fastboot.exe in your path, or in the same folder as all your extracted images. Open powershell and navigate to the folder with your boot images. Connect your phone to USB.
2. This will wipe your device! Reboot to the bootloader and run:

fastboot -w

3. Run:

gci -filter *.img | where {$_.Name.split('.')[0] -match 'boot|cpucp|dtbo|modem|oplusstanvbk|oplus_sec|qweslicstore|shrm|splash|vbmeta|vbmeta_vendor|vbmeta_system|vendor_boot|vm-bootsys'} | foreach-object { fastboot.exe flash $($_.Name.split('.')[0]) $_.Name }

4. Run:

fastboot reboot fastboot

5. Run:

gci -filter *.img | where {$_.Name.split('.')[0] -match 'abl|aop|bluetooth|devcfg|dsp|featenabler|hyp|imagefv|keymaster|multiimgoem|qupfw|tz|uefisecapp|xbl|xbl_config|product|system|system_ext|vendor|odm'} | foreach-object { fastboot.exe flash $($_.Name.split('.')[0]) $_.Name }

6. Run:

fastboot reboot

7. Proceed to boot normally.

The commands in steps 3 and 5 get a list of all files in the current directory with the .img extension, filter them to the correct ones to flash, and then flash them one after another.

If someone wants, I can probably throw together a script to run the whole process start to finish.

Edit: script attached. I've (unfortunately) had the opportunity to test it and fix all the bugs. So it works. You will need to have fastboot.exe accessible in your system PATH to run it.

I cant seem to get this to work. What am I doing wrong?

 

[shadabkiani]

I cant seem to get this to work. What am I doing wrong?

You are way off from where you need to be. This is an old method, and you don't need this. If you wanna recover your phone, you can use MSM Tool method (read here) which is way simpler and fool proof. This will get your phone back to OOS11, and you can OTA update from there.

 

[TsuyoiS2]

what to do when fastbootd is not recognized in terminal?
only fasbootd is not recognized, fastboot recognizes

 

[shadabkiani]

what to do when fastbootd is not recognized in terminal?
only fasbootd is not recognized, fastboot recognizes

Use latest platform tools.

 

[MattsSoScene]

You are way off from where you need to be. This is an old method, and you don't need this. If you wanna recover your phone, you can use MSM Tool method (read here) which is way simpler and fool proof. This will get your phone back to OOS11, and you can OTA update from there.

Thanks! I needed to look up a guide to walk me through it, but that did the trick! You are a life saver!

 

[crazyg4merz]

Thanks for the guide! I'm planning to go back into stock but I don't have Windows machine and maybe I'll use this method. But the newer payload dump now have more partitions like `my_manifest` `my_heytap` etc. Do I just flash them too in the second step or I don't need them?