Urgent help! Stuck in black screen with Crashdump Mode - OnePlus 6 Questions & Answers

Merry Christmas guys,
I have a really unusual situation.
First time that I have tried all tricks I know and I can't get myself out of this difficult situation.
I was trying to update Magisk with a patched boot file and after a reboot I was not being able anymore to access the system but only this black screen with the Crashdump Mode is appearing.
I can access the Fastboot screen, but no way to reboot to the TWRP recovery or to flash another boot.img, even through some pc flashing utilities.
Is there anything to try through another slot or something else?

I also tried:
fastboot flash boot_a boot.img
and I get this error:
FAILED (remote: Flashing is not allowed for Critical Partitions)
But my bootloader is unlocked and other commands like fastboot reboot works normally.

After I flashed through fastboot the images of boot, abl, dtbo, fw I can only access the TWRP recovery where everything is decrypted.
Any other ideas?

Try booting temporary into TWRP by using this command
fastboot boot twrp.img
If you can't use MSMDownloadTool

Related

Fastboot recovery problems

I'm having a bit of trouble erasing the recovery off my Verizon HTC M8. Yes, I am Unlocked/S-OFF.
My trouble is when I reboot into fastboot I can erase/flash every partition on my phone EXCEPT the recovery...it says remote failed? I'm just trying to get a fresh install of TWRP. I can flash twrp just fine via fastboot but I was wondering if anyone else has had this problem.
I can flash my GF's G3 via fastboot erase recovery the fastboot flash twrp.img but my phone el-borko.
Any ideas?

Flash TWRP via fastboot android 10

Hello guys, as we known that it is unable to use command in fastboot to boot into TWRP if we are on Android 10 (both OOS and Custom rom) at the moment, so here is the simple command allow us to do that if you want to roll back android 9 or any rom by TWRP
fastboot flash boot_a <twrp name.img>
fastboot flash boot_b <twrp name.img>
fastboot reboot
Your phone will automatically boot into TWRP, so you can flash another rom
Can anyone confirm this works?
I tried something similar when I first installed OOS 10, and I successfully booted TWRP, but I ended up getting a bootloop (stuck at the g.co/ABH warning thing) when I rebooted to system. I don't know if I did something wrong, or flashing twrp to both boot partitions caused it.
I would try again, but I'm on a critical work trip until the end of the month, so my phone's uptime is expected to be 100% until then.
worked for me while anything else didnt
LazerH said:
worked for me while anything else didnt
Click to expand...
Click to collapse
Does it wipe your data?
Didn't work for me. My boot image was patched already this is probably why.
ok, I tried this, but as reported above, now also stuck on this same: "I tried something similar when I first installed OOS 10, and I successfully booted TWRP, but I ended up getting a bootloop (stuck at the g.co/ABH warning thing) when I rebooted to system. I don't know if I did something wrong, or flashing twrp to both boot partitions caused it."
How do I resrore operation for my phone? (help?)
Well, I met this issue before, and ended up with using this method to successfully boot into twrp.
This issue seems to appear on OOS, when I using `fastboot boot xxx.img` on other ROM like omni, I'm able to boot into twrp, thanks!
can someone help me please. my phone is stuck in a fastboot bootloop. everything I try doesn't work.
fastboot boot TWRP.img NOTHING
tried your solution above and still nothing
Still stuck in fastboot this is what I get:
PS C:\Users\Les Brown\Desktop\OnePlus 6> fastboot boot twrp-3.3.1-17-enchilada-Q-mauronofrio.img
downloading 'boot.img'...
OKAY [ 0.617s]
booting...
FAILED (remote: Failed to load/authenticate boot image: Load Error)
finished. total time: 0.655s
@killathenoob Download DECRYPTED OOS 10.3.0 with this help if you don't really know what to do with this.
For others people (and you if you want to root or just install TWRP after fresh OOS10 Decrypted install) don't forget to OEM unlock before doing anything.
Download this
Copy "twrp-3.3.1-17-enchilada-installer-mauronofrio.zip" into internal storage of your OP6
Power it OFF
Power it ON in fastboot mode
Launch "Boot TWRP.bat"
Connect your OP6 to your PC and wait for TWRP to boot
Install twrp-3.3.1-17-enchilada-installer-mauronofrio.zip
Reboot to recovery and install magisk if you need to.
Source
Hope I helped a bit.

Any help for OP6 stuck on "Boot Loader is unlocked" warning page ?

Hi everybody,
I tried to update my OOS to Android Q while keeping magisk, there was probably a module not compatible that I forgot to remove before and I could not access the interface after rebooting.
Trying to restore the stock boot.img with fastboot, now I am stuck on the "Boot Loader is unlocked" warning page and the phone refuses to boot.
I tried to wipe everything using fastboot -w but still can't boot normally, if anyone can help me solve this please, I would be grateful.
Regards.
Try flashing the unofficial TWRP for Q from here
You can follow that guide but don't install Magisk, then after successful boot, try flashing Magisk uninstaller in TWRP.
Can try flashing android 10 boot.img from #2 link.
this happened to me. It was because I had the usb pluged. If you take the usb out it will boot. Or at least mine worked that way.
What I did was completely restoring the device by flashing a fastboot ROM then updating to Q again. SO I've lost all my data.
Do you know any way I can root android Q actually ?
https://forum.xda-developers.com/oneplus-6/how-to/how-to-flash-twrp-magisk-android-10-t3988213
danecr7 said:
Hi everybody,
I tried to update my OOS to Android Q while keeping magisk, there was probably a module not compatible that I forgot to remove before and I could not access the interface after rebooting.
Trying to restore the stock boot.img with fastboot, now I am stuck on the "Boot Loader is unlocked" warning page and the phone refuses to boot.
I tried to wipe everything using fastboot -w but still can't boot normally, if anyone can help me solve this please, I would be grateful.
Regards.
Click to expand...
Click to collapse
If you have access to fastboot then you can flash twrp and do below steps exactly else you will stuck at bootloader warning message
Reboot to fastboot mode. Flash TWRP img using the following command--> Oneplus blocked fastboot boot command
Code:
fastboot flash boot twrp-******.img
From fastboot mode, reboot directly to recovery mode. Now you have a working TWRP. (If you already have Magisk earlier, flash Magisk uninstaller now before proceeding to the next steps)
In TWRP, flash the stock boot image in boot partition. Don't reboot .
Flash TWRP installer zip then reboot to recovery. You now have a fully working TWRP in OOS 10. . Don't reboot .
Flash Magisk v20.1. Reboot to system.

[Solved] Crashdump Mode "Attempted to kill init! exitcode=0x0000000b complete_and_exit"

I was trying to upgrade my OP6 from the latest OOS 11 beta to a custom ROM.
I made sure the bootloader was unlocked, USB debugging enabled, backed everything up and rebooted into fastboot mode.
I flashed TWRP using "fastboot flash boot TWRP.img" and rebooted. I now see the above message when I try to boot. I've tried the MSM tool, but that hangs on "param preload" and shows no progress bar. I also tried flashing the fastboot ROM using flash-all.bat (which has helped me in the past), and extracting and flashing the boot.img file using payload dumper. I also trieda droidwin guide for restoring it to stock using fastboot commands one by one, but I can't flash critical partitions even after re-locking and unlocking using unlock critical. fastboot says secure boot is enabled.
I've been researching and trying everything all day, I haven't found anything successful, so I'm feeling pretty defeated. I can boot into fastboot and execute commands, and flashing boot.img and rebooting into recovery gives me "wiping, please wait" and hangs at 99%, and ADB devices shows it as "unauthorized."
edit: Now flashing boot.img and rebooting into recovery gives me a black screen.
edit 2: I fixed it by following this (https://www.droidwin.com/restore-oneplus-6-stock-via-fastboot-commands/) tutorial and just ignored the critical partitions errors. I think flashing the vendor is what fixed it, but I'm not sure.

not going into system after flashing twrp via fastboot

this is not troll, i just forgot command, but i understand where is problem, i just need help in issuing command, and also keeping TWRP after booting in system
okay, this is not usuall getting stuck in twrp after flashing it via fastboot.
i just need help how to boot , system
because way i installed it, is via fastboot:
' fastboot flash recovery twrp.img '
done good
but i mistakenly followed tutorial , and executed what they said should be okay (i mean it is okay, to boot it into recovery, but my phone manufacturer is stupid and don't include proper fastboot)
so i typed command
' fastboot boot recovery '
which it booted into recovery, and when i reboot into 'system' from twrp it boots into system. i had same issue, but i forgot command how to do this (and link to that solution also)
i just know that, last command, my phone misinterpret it , to boot recovery as boot way. instead of kernel, boot.img
------------------------------------------
because we have beautifull documentation on fastbood issued by google, i don't know how to make it boot system, i mean, boot.img
and, i want it to keep twrp installed, suprisingly, when i go power + volume up , sometimes it brings stock recovery and sometimes twrp.
for now, help me how to issue command, to boot kernel and not recovery
- and phone is: Allview Viva H801 , android 5.0
yea, some no name, that's why i'm asking for help
---------------
EDIT:
i think i managed to permamently flash TWRP, which was purpose, because now I can, use power on + volume up , and it always brings up TWRP (yay)
but now, i don't know how i can access bootloader (fastboot) , if i need to issue commands you instruct me to issue. i can use only twrp
kraken-gz said:
this is not troll, i just forgot command, but i understand where is problem, i just need help in issuing command, and also keeping TWRP after booting in system
okay, this is not usuall getting stuck in twrp after flashing it via fastboot.
i just need help how to boot , system
because way i installed it, is via fastboot:
' fastboot flash recovery twrp.img '
done good
but i mistakenly followed tutorial , and executed what they said should be okay (i mean it is okay, to boot it into recovery, but my phone manufacturer is stupid and don't include proper fastboot)
so i typed command
' fastboot boot recovery '
which it booted into recovery, and when i reboot into 'system' from twrp it boots into system. i had same issue, but i forgot command how to do this (and link to that solution also)
i just know that, last command, my phone misinterpret it , to boot recovery as boot way. instead of kernel, boot.img
------------------------------------------
because we have beautifull documentation on fastbood issued by google, i don't know how to make it boot system, i mean, boot.img
and, i want it to keep twrp installed, suprisingly, when i go power + volume up , sometimes it brings stock recovery and sometimes twrp.
for now, help me how to issue command, to boot kernel and not recovery
- and phone is: Allview Viva H801 , android 5.0
yea, some no name, that's why i'm asking for help
---------------
EDIT:
i think i managed to permamently flash TWRP, which was purpose, because now I can, use power on + volume up , and it always brings up TWRP (yay)
but now, i don't know how i can access bootloader (fastboot) , if i need to issue commands you instruct me to issue. i can use only twrp
Click to expand...
Click to collapse
Connect to adb while booted into TWRP and type the command:
adb reboot bootloader
That "should" boot into fastboot
For future reference, when flashing TWRP via fastboot, immediately after you flash the TWRP.img, enter the command:
adb reboot recovery
That should boot straight into TWRP and keep TWRP. If you let the device boot into any other mode than recovery, it will revert back to stock recovery, you have to boot directly into TWRP immediately after flashing it in order to keep TWRP.

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