Question Bricked OnePlus 9 Pro

[NewNoob911]

Hi guys,

A have flashed a couple of old phones, and then a friend asked me to flash a high-end phone. He is anti-Google, and wanted something that would give him privacy.

He purchased a new OnePlus 9 Pro, and asked me to install Lineage 20.

I managed to get the bootloader unlocked, using Adb and Fastboot commands.

I then tried to install TWRP. Got it working but for some reason I couldn't see the ROM I loaded. Couldn't see any of the normal directories and tried repairing the drive. Tried for a while, and then looked at Magisk.

Got that installed and then needed a boot.img to complete the patch. Found one where someone posted about the problem and gave a link to their boot.img file. This corrupted things.

Now the phone is in a Fastboot loop. I can't connect to my laptop, and the phone won't even charge when connected. Saw a couple of "Qualcomm dump", "die" messages.

I'm a noob and was following instructions as closely as I could. This is a friends new phone and would really appreciate any and all assistance you generous souls could offer!

 

[AndyC76]

Can you list:

Hardware model of phone ( on box )
Which rom was previously installed.

Someone should be able to assist from there.

 

[TheGhost1951]

Start here....

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

 

[TheGhost1951]

Or here,

[TOOL][Windows] Fastboot Enhance [Payload Dumper & Image Flasher]

Fastboot Enhance What it can do? - Show fastboot vars - Switch between fastbootd & bootloader - Switch between A & B slot - Flash Payload.bin in fastbootd - Flash images - Erase partitions - Delete logical partitions - Create logical partitions...

forum.xda-developers.com

 

[TheGhost1951]

As long as you can get to Fastboot you definitely can revive your phone. Always read, read, read and then read some more before diving into doing any flashing on an Android device!

 

[NewNoob911]

Can you list:

Hardware model of phone ( on box )
Which rom was previously installed.

Someone should be able to assist from there.

Hi.

Model No is LE2123 and Build No is Oxygen OS 11.2.9.9.LE15BA.

 

[NewNoob911]

Can you list:

Hardware model of phone ( on box )
Which rom was previously installed.

Someone should be able to assist from there.

Hi.

Model No is LE2123 and Build No is Oxygen OS 11.2.9.9.LE15BA.

 

[NewNoob911]

Start here....

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

Hi Ghost,

I have downloaded the specific MSM Tool, but cannot connect to the phone. The phone loops in Fastboot, and nothing else.

Any ideas?

 

[NewNoob911]

Hi guys,

I have detailed my situation at the beginning of this thread. I have subsequently downloaded the specific MSM Download Tool, but as the phone is in a Fastboot loop, I cannot get my laptop to connect top the phone. Any ideas Please?

 

[TheGhost1951]

Try holding vol + and power button to shutdown the phone completely. Then hold down vol + and vol- and power buttons and see if it will boot to bootloader (fastboot) and stay..

 

[immortalwon]

Here are some steps I recommend to try if your device isn't being detected by your WINDOWS based PC

1. Disable Driver signature enforcement on windows 10 / 11 - google this if you don' know how to do
2. Install Oneplus Pro 9 drivers from official website of oneplus <------Make sure u do step 1 before you install them.
3. Have the latest adb platform tools and try again.
4. IF after trying the first 3 steps and still doesn't work, put your phone into EDL mode and use MSM tool. This requires the qualcomm drivers installed on your PC.

 

[windows4droid]

Use unbrick Firmware (MSM)

 

[93zx7]

There's a trick to get the unbrick tool to recognize the device in FB mode. I think it's called EDL mode. I was in similar situation when I soft bricked my TMO variant OP9Pro.

@immortalwon posted the proper instructions. Those are the steps I had to do to unbrick my phone.

 

[Jack Droid]

Hi guys,

I have detailed my situation at the beginning of this thread. I have subsequently downloaded the specific MSM Download Tool, but as the phone is in a Fastboot loop, I cannot get my laptop to connect top the phone. Any ideas Please?

Did you solved ?

 

[TheGhost1951]

In fastboot mode, temporary boot TWRP, fastboot boot name_of_twrp.img, then start MSM Tool on laptop make sure to click start in MSM tool. Then with phone connect to PC, in TWRP, tap on reboot then tap EDL.....there you go.

 

[kjslabber]

Reason you bricked, is you were on wrong firmware. Need A13 for Lineage 20. After MSM update to A13 before trying to flash.