Question TWRP, Full OOS etc. Stuck without OS... please HELP

[Alonzzo2]

So I wanted to switch from OOS 11 to 13.
I was unl;ocked, rooted with magisk installed.
Updated to c47 and flashed magisk. all good.
Then flashed TWRP and tried flashing the full OOS c64 I downloaded.
The flashing failed and now I have no OS since I wiped before flashing as recommended.

At the past with previous devices I just flashed TWRP, flashed the ROM, reflashed TWRP and was done with it.

How can I recover my phone now? All of the data is backed up (contacts, apps, photos) so it's not a big deal if I lose all my data.
Currently I'm at TWRP

PLEASE HELP ME

 

[Alonzzo2]

Also when trying to activate sideload, TWRP is stuck on 'starting ADB sideload feature' and nothing happens, adb devices command doesn't recognize the phone and I have a red warning 'unable to decrypt FBE device'

 

[Guest902379028]

Just use MSM TOOL and never unlock bootloader.

OP9Pro - Repository of MSM Unbrick Tools (TMO, EU, GLO, IN)

By using these tools, you accept full responsibility for your actions. Your warranty is void should you run any of these utilities without OnePlus support present. I am not responsible for bricks, fires, nuclear war, etc. If you modified any...

forum.xda-developers.com

 

[N1ldo]

Not sure but I think the problem was installing twrp, as far as I know it does not support installation, just start without installing like, (Fastboot boot twrp.img)
Why didn't you follow all the updates without inventing fashion?
Just download the complete package of the update and does the manual update, does not restart the phone, go in magisk, click install and mark the third option, which is to install after full Ota.

 

[Guest902379028]

Not sure but I think the problem was installing twrp, as far as I know it does not support installation, just start without installing like, (Fastboot boot twrp.img)
Why didn't you follow all the updates without inventing fashion?
Just download the complete package of the update and does the manual update, does not restart the phone, go in magisk, click install and mark the third option, which is to install after full Ota.

I don't think TWRP even support flashing OOS.

 

[Alonzzo2]

@N1ldo cause I wanted Android 13 and the OTA failed to update from C47 to C61.
Also I thought that my past experience with flashing the Oneplus 6 will still be relevant, which obviously isn't apparently...
Gonna try to follow the MSM guide.
But for the future, assuming I will succeed in restoring via MSM, what should I do in order to gain root?
1. MSM
2. re-unlock the bootloaded
3. Flash magisk via fastboot
That's it? did I get this right?

 

[DirtryElectroOP3]

@N1ldo cause I wanted Android 13 and the OTA failed to update from C47 to C61.
Also I thought that my past experience with flashing the Oneplus 6 will still be relevant, which obviously isn't apparently...
Gonna try to follow the MSM guide.
But for the future, assuming I will succeed in restoring via MSM, what should I do in order to gain root?
1. MSM
2. re-unlock the bootloaded
3. Flash magisk via fastboot
That's it? did I get this right?

nope, you boot twrp-3.7.0-12.1 via fastboot (fastboot boot twrp.img) and there you can install magisk. if normal installation doesn't work, try using sideload. if you plan on flashing the twrp installer zip, do it before flashing magisk as it patches your current boot image.

 

[DirtryElectroOP3]

I don't think TWRP even support flashing OOS.

worked fine for me

 

[Alonzzo2]

nope, you boot twrp-3.7.0-12.1 via fastboot (fastboot boot twrp.img) and there you can install magisk. if normal installation doesn't work, try using sideload. if you plan on flashing the twrp installer zip, do it before flashing magisk as it patches your current boot image.

great. and I can do it regardless of the oos I'm running right? I wouldn't ask that question under normal circumstances but after today, better safe than sorry

 

[DirtryElectroOP3]

great. and I can do it regardless of the oos I'm running right? I wouldn't ask that question under normal circumstances but after today, better safe than sorry

should work as I described. if you want to be 101% safe, just boot the twrp, but if I remember correctly, the installer should work on oos 13. if you want, you can extract the payload.bin of your current oos so you have the stock boot.img and vendor_boot.img in case anything goes wrong. you can find the exact description here.

 

[Alonzzo2]

Thanks, And one last question, if I'll unlock the bootloader now that I've installed all of the updates up to android 13, it will erase all the data but not the updates, right?

 

[Alonzzo2]

Thanks, And one last question, if I'll unlock the bootloader now that I've installed all of the updates up to android 13, it will erase all the data but not the updates, right?

Never mind, it works, after the updates I unlocked the bootloader, patched the boot image, booted from it and installed magisk. I now have root.
Thanks all for helping me out!