fastboot – Cannot boot into fastbootd OnePlus 8T

I’m trying to manually flash the factory image on my OnePlus 8T (using this TCD guide).

I was able to boot my phone into Fastboot mode using the volume + power keys. I’m able to execute fastboot devices and successfully flashed all images in Section 8 of the above mentioned tutorial before it gets to the fastboot reboot fastboot command (i.e. boot.img, dtbo.img, etc.)

When I try to execute fastboot reboot fastboot, I get the following error: fastboot: usage: unknown reboot target fastboot.

It seems other people have this problem as well and it’s due to some changes that happened in Android 10 (my OnePlus 8T is on Android 11). Reading this XDA thread, comments #14 – #18 (inclusive) I think describe the underlying problem, but I don’t understand the solution.

Do I need to execute a different command, is there a process I need to complete first?

For broader context, I was rooting my phone and got into a bootloop. Fastboot can recognize my phone but not adb. I’m trying to get a clean start by restoring it to the factory image and have successfully completed all the steps in the TCD guide except for the final step of flashing the images.

Here’s a screenshot of my terminal –

enter image description here

My adb version is:

Android Debug Bridge version 1.0.39
Version 0.0.1-4500957
Installed as /usr/local/bin/adb

Updates:

  • I tried fastboot reboot bootloader which does successfully reboot into bootloader, but then I cannot flash the other images. When I try, I get the error: FAILED (remote: Flashing is not allowed for Critical Partitions) which I think is because I’m not in “fastbootd” which seems to be important based on the XDA thread
  • When I try fastboot reboot recovery, I am not booted into recovery but get the same error: fastboot: usage: unknown reboot target recovery
  • I ran fastboot boot imagefv.img and got the following. My phone is now showing a screen with the OnePlus logo and the words “Fastboot Mode”, but no other options.

enter image description here

adb – FAILED (remote: Partition should be flashed in fastbootd) PIXEL 3XL Android 11 FAILED (remote: ‘Operation not permitted’)

Could someone help me with the following problem:

I want to flash my pixel 3XL with AOSP precompiled images in android 11, but it gives me this error:

enter image description here

I have fastboot version 1: 8.1.0 + r23-5 ~ 18.04
and adb version:
Android Debug Bridge version 1.0.39
Version 1: 8.1.0 + r23-5 ~ 18.04

I have a problem when executing fastboot flash on my pixel 3xl, it returns the following error:

Writing sparse ‘system_a’ 4/6 FAILED (remote: ‘Operation not permitted’)

enter image description here

someone help me with this error.

adb – FAILED (remote: Partition should be flashed in fastbootd) PIXEL 3XL Android 11

Could someone help me with the following problem:

I want to flash my pixel 3XL with AOSP precompiled images in android 11, but it gives me this error:

enter image description here

I have fastboot version 1: 8.1.0 + r23-5 ~ 18.04
and adb version:
Android Debug Bridge version 1.0.39
Version 1: 8.1.0 + r23-5 ~ 18.04

Could you help me!?

adb – Android Open Source Project fastbootd flashing error

I am new to android development and I am trying to flash a custom rom built through the android source project. But I am facing below error. If anyone has faced such an error, it will be great if you can help. Thank you.

user@user-Predator-PH315-52:~/aosp$ fastboot flashall -w

Bootloader Version…: b4s4-0.2-5736883
Baseband Version…..: g670-00030-191028-B-5972069
Serial Number……..: 9A9AY1CEC7

Checking product

OKAY ( 0.060s)

target reported max download size of 268435456 bytes

Erase successful, but not automatically formatting.

File system type raw not supported.

Erase successful, but not automatically formatting.

File system type raw not supported.

Sending ‘boot_b’ (65536 KB)…

OKAY ( 2.340s)

Writing ‘boot_b’…

OKAY ( 0.346s)

Sending ‘dtbo_b’ (8192 KB)…

OKAY ( 0.384s)

Writing ‘dtbo_b’…

OKAY ( 0.095s)

Sending sparse ‘system_b’ 1/5 (262140 KB)…

OKAY ( 9.245s)

Writing ‘system_b’ 1/5…

FAILED (remote: Partition should be flashed in fastbootd)

Finished. Total time: 14.348s

Phone: Pixel 3a

Build: 9.0.0(PD2A.190115.032, Mar 2019)