[OnePlus 8 Guides, News, & Discussion] Eatalian:
Manage to unlock bootloader and then phone stuck into bootloop

SOLVED

So the phone wasn't detected in PC or in msm because I apparently didn't press the vol UP and DOWN button long enough for msm to detect. After it was detected, I just followed the video tutorial by Max Lee and I got my phone back!

Hi there,

so it has been awhile since I rooted an android device. The last time I rooted and custom flashed an android phone was with my Note 2 6 years ago. After a successful flash and a few months of usage, the phone in general died and started going on a boot loop forever. So after that I gave up on rooting my phone...

Recently, a friend managed to convince me to start back on rooting my recently purchased Oneplus 8 phone because he believes I woud enjoy the priveleges that AdAway has to offer for rooted phones.

I read up on the guides here and tried to refresh my basic knowledge on rooting... So what I did was basically follow the guideline here.

wccftech (unfortunately as a new user, I can't post outside URL here...) but keyword for the tutorial would be wccftech oneplus 8, rooting

Here comes the problem with the rooting -

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1 .Start by extracting the boot.img from the firmware you downloaded. Copy that file onto your phone.

2. Make sure you have the Magisk Manager installed on your device.

3. Once you have copied the file, launch the Magisk Manager and then tap on Install, then Install again.

4. Choose the second option that says Select and Patch a File.

5.You will have to navigate to where you have placed the boot.img on your phone and select that.

6. Magisk Manager will start the patching process, and the output file will be saved in the download folder with the name magisk_patched.imag or patched_boot.img. You will need to copy this back on to your computer.

7. Rename the file back to boot.img.

8. Now it's time to boot your device in fastboot mode. To do this the easy way, you should have the advanced reboot in Developer options enabled. You can do so in this guide.

9. Once your device is in fastboot mode, connect it to your computer and type fastboot devices. This is to ensure that your device is connected and it will show up on the command prompt.

10. Next, you have to type fastboot flash boot boot.img and press enter.

11. Once the process is complete, simply reboot your phone and you will be done.

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I suspected something wrong after step 11, because at command prompt, it showed that the rooting was done(?). So this obviously took place when the phone was plugged in to the PC. After that, it just got stucked there, so what I did was unplugged the phone and then this sent my Oneplus 8 into a boot loop "Qualcomm Crashdump Mode"

I tried following the steps using MsmDownloadTool but to no avail. Youtube Video Tutorial by Max Lee.

The problem is that I manage to power off the phone when it was in Qualcomm Crashdump Mode. Upon connecting the phone while Msm is running, it isn't detected by Msm... Clicking Enum doesn't help with anything. The moment I plug in the phone, the phone just go into fastboot mode.

Is there anyone who is willing to help me with this? I would appreciate your help very much.

Regards,

Eatalian