[SOLVED] OP7 (GM1900) stuck in fastboot loop, with no access to recovery - OnePlus 7 Questions & Answers

Hello,
I'm probably not posting this in the right section, nor the way it should be posted. This is my first post, and I'm sorry if this is the case.
I'll try to provide as much information as I can concerning my problem.
I have an OP7 (GM1900) that was rooted with TWRP recovery and magisk. I upgraded to OOS 10.0.3 through normal system upgrade. As I have done this many times before, I figured it wouldn't be much different. Upgrade done, everything's working but I lost the root and magisk as expected. Went back to fastboot mode, tried to boot to a temporary TWRP image, which failed (only showing fastboot logo in center of the screen). I googled, and ended up flashing both boot_a and boot_b (big mistake I know...)
Now, I'm stuck in a fastboot loop, with no access to recovery whatsoever. Nevertheless, I can still use fastboot and adb to execute command.
I figured I should download a global ROM and flash it again? I'm not sure which one to download since I didn't take note of the build beforehand and have access to nothing right now.
Is there no way to factory reset through fastboot in any way?
Thanks in advance

Update:
I made it worse by trying to flash a ROM I found on internet and totally bricked it to Qualcomm crash dump screen.
NEvertheless, everything is now solved using the MSM tool that can be found here:
https://forum.xda-developers.com/oneplus-7/how-to/unbrick-tool-oneplus-7-msmtool-hydrogen-t3953240
Hopefully, this will help someone with the same problem

This is MSM tool "Hydrogen" Version...
There is msm unbrick tool for OxygenOS (European & International firmware, android 9 & 10)
https://forum.xda-developers.com/oneplus-7/how-to/op7-unbrick-tool-to-restore-device-to-t3954325

daitalos said:
This is MSM tool "Hydrogen" Version...
There is msm unbrick tool for OxygenOS (European & International firmware, android 9 & 10)
https://forum.xda-developers.com/oneplus-7/how-to/op7-unbrick-tool-to-restore-device-to-t3954325
Click to expand...
Click to collapse
Thanks a lot ! I'll definitely download this one just in case, it could save the time going back to OOS with a local upgrade.

Related

how to reinstall Oxygen OS

HI Everybody,
I have a Oneplus 8T, European, I installed lineage recovery and Lineage OS 18.1, rooted, but now I would like to reinstall Oxygen 11. Please, can you tell me how to do or where to find the answer?
Please, don't tell me to use TWRP because at moment it's not available for this smartphone.
Thank you All in advance!
You'll need to download the msm recovery tool for your device. Will take it back to new
11mackey11 said:
You'll need to download the msm recovery tool for your device. Will take it back to new
Click to expand...
Click to collapse
even if it is not bricked? ideed my phone works perfectly. Is there any soft way for flashing the Oxygen rom?
matpack said:
even if it is not bricked? ideed my phone works perfectly. Is there any soft way for flashing the Oxygen rom?
Click to expand...
Click to collapse
I guess you could try to fastboot flash a full rom zip I think that should work. If not you can just use the MSM tool to restore.
The steps to fastboot flash a full OOS rom zip should be the same as listed in this conversion thread https://forum.xda-developers.com/t/guide-convert-tmo-to-global-eu-or-other-variant.4188491/
matpack said:
even if it is not bricked? ideed my phone works perfectly. Is there any soft way for flashing the Oxygen rom?
Click to expand...
Click to collapse
I believe it can fastboot flashed. I just haven't tried it yet. I did see another post where the steps were laid out but remember where I saw it
I am also very interested in the answer to this question. And I think I know why the answer is "use the MSM tool".
Here's how I arrived at that:
If you use payload_dumper to have a look at what gets flashed when installing a rom, there's a number of image files that aren't listed in /dev/block/by-name such as odm, product, vendor and even system(!). This means that you cannot flash them using fastboot and the only way to flash them is via fastbootd (which is in recovery.img).
So the theoretical process is:
- boot into fastboot
- flash boot, recovery, and the other "normal" partitions
- start fastbootd using "fastboot reboot fastboot"
- flash the remaining partitions
- reboot
The problem with OOS is that fastbootd looks very much like recovery: it has no ADB/fastboot connectivity. So you cannot flash the remaining partitions.
Conclusion: the MSM Tool is the only way to return.
Acknowledgment: thanks to @chandu dyavanapelli for the Evolution-X rom installer script which helped me understand what's going on. See https://forum.xda-developers.com/t/...0_r34-evolution-x-passion-22-04-2021.4266067/

Root /Magisk error in boot, possibly boot loop.

We received a new 8t and proceeded to do root and unlock on it.
Here is my process and problem.
Unlocked bootloader.
Updated phone to recent version via OTA update.
Downloaded update via Oneplus website.
Extracted payload.bin VIA python.payload dumper.
Moved boot.img to phone and patched it with magisk (select and patch a file)
Moved patched image to PC and ran adb
Fastboot flash boot patched image name.img
rebooted , now its caught in bootloop.
Tried fastboot --set-active=a and it didnt make a difference.
When looking at adb devices it shows the attached phone as unauthorized.
Dont know if this helps
Can get into fastboot
You flashed the OS to the bootloader. Not sure how to help you, man. Maybe try the EDL Tool. That worked for me. Also, always install TWRP and flash magisk zip through TWRP. It's foolproof.
TWRP doesnt work with android 11 or the oneplus 8 as far as I know, last time I looked.
Did a tool and fixed the crashes and bootloop, then followed a youtube video and guide.
Found out I ended up doing a different OS version that didnt match.
eracet said:
TWRP doesnt work with android 11 or the oneplus 8 as far as I know, last time I looked.
Did a tool and fixed the crashes and bootloop, then followed a youtube video and guide.
Found out I ended up doing a different OS version that didnt match.
Click to expand...
Click to collapse
TWRP for the 8T works reasonably well. See https://forum.xda-developers.com/t/...recovery-project-8t-kebab-2021-09-04.4302449/

Bricked with no OS and no idea how to flash ROM

Hi Guys,
I think I f...ed up big time...
My device was rooted and I tried to unroot/factory reset to give it to my wife. Since I'm now sitting here for about 5 hrs I try to summarize what I've been doing:
1. I started with trying to Flash a Factory Image with the ALL-IN-ONE Tool
- My Device was on the Latest Oxygen OS 11 and I just stupidly followed the instructions of the Tool and downloaded a OOS 10 based Stock Rom and flashed it (thats where my nightmare began)
- After I flashed the OOS 10 Stock Rom I was Stuck in at the Open Bootloader warning screen ("the boot loader is unlocked and software integrity cannot be guaranteed ...")
2. Since there is no (at least I couldn't find one for the life of me) OOS 11 fastboot stock ROM I tried to downgrade via an OOS Beta ROM I found in a downgrade guide
- That didn't work either and I ended up stuck at the same Screen
3. After some googling I came across this guide and tried to manually flash a none fastboot OOS 11 ROM by manually extracting all the images of the payload.bin
- After I extracted all the images I flashed them one by one as mentioned in the guide via fastboot and this ended up with
Qualcomm Crash Dump mode dm-verity device corrupted force dump Kernel restart
Click to expand...
Click to collapse
4. After that I panicked a little since I've never seen this error before and tried to Flash the OOS 10 based Stock rom via the ALL-IN-ONE Tool again
- This worked with no errors but now I'm still stuck in the "Open Bootloader warning Screen"
Since then I tried Step 4 with another OOS 11 none fastboot ROM but now I keep getting following error everytime I try to flash one of the extracted images via fastboot (which worked before):
FAILED (remote: Flashing is not allowed for Critical Partitions
Click to expand...
Click to collapse
I did some research, seems like this error indicates a locked bootloader which is wrong, bootloader is still unlocked.
Even if I try to unlock the bootloader again I get the reply that bootloader cannot be unlocked since it already is unlocked.
So now I'm stuck with a completely f...ed up device with absolutely no clue if and how I can fix this.
I really hope anyone of you guys can help ...
Apologies for the bad writing but it's 5 am and I'm tired and frustrated af ...
greetings from Germany.
Timo
EDIT: Oh and yes, I know about the MSM-Tool and tried it but I can't get it to work since my device is not showing. I followed this guide several time but nothing is happening and my device is not even showing in the device manager. Only time it shows in the device manager is when in fastboot mode.
Guys I finally did it.
I deinstalled all stale/inactive drivers and reinstalled the Qualcomm drivers and finally managed to get the MSM Tool up and running and revived the phone.

OP7 Pro - CrashDump Mode when starting the device

Hello community,
I kind of ruined my phone into this CrashDump Mode state. Which prevents me from using my phone at all. I'm pretty sure it is 'bricked.
I hope someone could give me some guidance to fix my phone again.
What do I want:
I wish to have the original OxygenOS back on my phone (stock).
What caused the problem:
My goal was to root my phone by unlocking the bootloader, installing Magisk and flashing the ROM from Magisk. Unfortunately, after doing all of this successfully there were some issues. One of them being slow restarts. It could take up to 20 minutes for the phone to start. Other than that it made the phone quite unusable as the media sound didn't work neither did the wifi and microphone. Making me unable to listen to anything but also couldn't make calls. For that reason I decided to unroot the phone again. I used the in-app Magisk full uninstall button to do so. After doing this, the phone didn't boot anymore. It was stuck at the boot loader unlock warning screen. So I figured I had to flash my latest version of OxygenOS on the phone. I grabbed a guide to do this manually on the XDA forums. However, this was a guide for Android 10 I believe. So it didn't seem to flash all the image files I saw listed after doing the payload extractor. This resulted in my phone booting up to the CrashDump Mode. As there were no guides for the version 11.0.5.1, I decided to use a tool listed here on the forums: https://forum.xda-developers.com/t/...ck-twrp-factory-image-stock-recovery.3358711/ However, this is only for version 10 instead of 11. This also didn't seem to work.
Steps done:
Unlocked bootloader:
- Basically by just using: "fastboot oem unlock"
This went successfully.
Rooted the phone:
- Installed Magisk and my boot.img on my phone.
- Created an .img with Magisk.
- Ported the created .img to my pc.
- rooted the phone with fastboot by flashing the .img on my phone for boot_a and boot_b
This went successfully, the phone was rooted.
Unrooting and stock recovery:
- Used the uninstall button within the Magisk app on the phone.
- Tried to manually flash the OxygenOS version 11.0.5.1 on my phone. Note: only a few images were then as they were the only ones listed in a guide.
- Tried the tool listed above.
This all failed.
Phone details:
OnePlus 7 Pro - European - Last version used: 11.0.5.1
Index of /list/Unbrick_Tools/OnePlus_7_Pro/EU_GM21BA/R
Juuuul said:
Hello community,
I kind of ruined my phone into this CrashDump Mode state. Which prevents me from using my phone at all. I'm pretty sure it is 'bricked.
I hope someone could give me some guidance to fix my phone again.
What do I want:
I wish to have the original OxygenOS back on my phone (stock).
What caused the problem:
My goal was to root my phone by unlocking the bootloader, installing Magisk and flashing the ROM from Magisk. Unfortunately, after doing all of this successfully there were some issues. One of them being slow restarts. It could take up to 20 minutes for the phone to start. Other than that it made the phone quite unusable as the media sound didn't work neither did the wifi and microphone. Making me unable to listen to anything but also couldn't make calls. For that reason I decided to unroot the phone again. I used the in-app Magisk full uninstall button to do so. After doing this, the phone didn't boot anymore. It was stuck at the boot loader unlock warning screen. So I figured I had to flash my latest version of OxygenOS on the phone. I grabbed a guide to do this manually on the XDA forums. However, this was a guide for Android 10 I believe. So it didn't seem to flash all the image files I saw listed after doing the payload extractor. This resulted in my phone booting up to the CrashDump Mode. As there were no guides for the version 11.0.5.1, I decided to use a tool listed here on the forums: https://forum.xda-developers.com/t/...ck-twrp-factory-image-stock-recovery.3358711/ However, this is only for version 10 instead of 11. This also didn't seem to work.
Steps done:
Unlocked bootloader:
- Basically by just using: "fastboot oem unlock"
This went successfully.
Rooted the phone:
- Installed Magisk and my boot.img on my phone.
- Created an .img with Magisk.
- Ported the created .img to my pc.
- rooted the phone with fastboot by flashing the .img on my phone for boot_a and boot_b
This went successfully, the phone was rooted.
Unrooting and stock recovery:
- Used the uninstall button within the Magisk app on the phone.
- Tried to manually flash the OxygenOS version 11.0.5.1 on my phone. Note: only a few images were then as they were the only ones listed in a guide.
- Tried the tool listed above.
This all failed.
Phone details:
OnePlus 7 Pro - European - Last version used: 11.0.5.1
Index of /list/Unbrick_Tools/OnePlus_7_Pro/EU_GM21BA/R
Click to expand...
Click to collapse
This is how I go back to stock
You can use MSM tool to revert OOS, or you can try this step:
1. Reboot twrp/lineage recovery, format data. Reboot bootloader
2. Fastboot boot into TWRP FBEv2
3. Sideload official TWRP 3.5.2.9-0 installer (found on TWRP website). Reboot recovery
4. Copy OOS 11.zip to internal storage or otg drive. Flash OOS 11.zip. Reboot recovery again
5. Format data in OOS stock recovery & Reboot
6. After boot into OOS 11, just local upgrade rom .zip again, you will have OOS on both slots
In your case skip to number 2 and after booting to TWRP then format data then install twrp
hammered58 said:
This is how I go back to stock
You can use MSM tool to revert OOS, or you can try this step:
1. Reboot twrp/lineage recovery, format data. Reboot bootloader
2. Fastboot boot into TWRP FBEv2
3. Sideload official TWRP 3.5.2.9-0 installer (found on TWRP website). Reboot recovery
4. Copy OOS 11.zip to internal storage or otg drive. Flash OOS 11.zip. Reboot recovery again
5. Format data in OOS stock recovery & Reboot
6. After boot into OOS 11, just local upgrade rom .zip again, you will have OOS on both slots
In your case skip to number 2 and after booting to TWRP then format data then install twrp
Click to expand...
Click to collapse
Hey,
Thanks for your reply! I currently don’t have twrp on my phone but I could look at it. Do you have a link for MSM tool as download and possibly a guide?
Juuuul said:
Hey,
Thanks for your reply! I currently don’t have twrp on my phone but I could look at it. Do you have a link for MSM tool as download and possibly a guide?
Click to expand...
Click to collapse
You actually boot into TWRP it does not have to be installed,, you install it once you boot into it plus you would probably need a otg because you do not have a OS . Here's a link to the Msm tools
https://onepluscommunityserver.com/list/Unbrick_Tools/OnePlus_7_Pro/Global_GM21AA/
There are several great write ups on how to use and install msm tool right here in the op7p forum I will see what I can find and post later
[OP7PRO][LATEST OOS 11.0.5.1 GM21AA/GM21BA] Collection of unbrick tools
Disclaimer: By attempting any of the processes listed in this thread you accept full responsibility for your actions. I will not be held responsible if your device stops working, catches fire, or turns into a hipster and claims to have been...
forum.xda-developers.com

Question How to unbrick One Plus Nord CE 2 Lite ?

I have bricked this device (One Plus Nord CE 2 Lite) by flashing the unofficial twrp image for this device. Device bootloops in TWRP.
Previously, I had succesfully unlocked the bootloader and rooted this device by flashing the patched magisk boot.img by following the method mentioned in this post (https://forum.xda-developers.com/t/rooting-oneplus-nord-2-ce-lite.4500297/)
How to restore the factory image and recover from this?
Any help is appreciated.
Thanks
...reboot to fastboot, flash the original boot and vbmeta and you're done ...maybe you have to change back the slot, but it's almost impossible to brick the device
...don't mess around with "Recovery" ...this device has already the newest partitioning system and there is no recovery partition
best regards
I messed up by flashing the wrong twrp image made. (Device was stuck on 1+ logo screen)
Thanks to your post i was able to rescue this device.
I used Oxygen Updater App, payload-dumper-gui and minimal adb fastboot.
Flashed boot and vbmeta with stock img files.
Restarting the device now will boot into fastboot mode.
Changing slots helped a lot.
(fastboot set-active=a/b)
After that, Device booted normally into OS.
... you're very welcome, Sir ...but really, don't mess around with "old school" recovery systems ...they are not needed anymore and furthermore they can't handle the "dynamic super partitioning" ...and again: nobody needs them after the year 2015 anymore
...best regards
NickR01 said:
I messed up by flashing the wrong twrp image made. (Device was stuck on 1+ logo screen)
Thanks to your post i was able to rescue this device.
I used Oxygen Updater App, payload-dumper-gui and minimal adb fastboot.
Flashed boot and vbmeta with stock img files.
Restarting the device now will boot into fastboot mode.
Changing slots helped a lot.
(fastboot set-active=a/b)
After that, Device booted normally into OS.
Click to expand...
Click to collapse
Hey can you help me pls, I am in the exact same situation as you but I can't get the stock img files, whenever I use payload-dumper it just gives me system.img and nothing else, could you maybe share your img files ?
Edit: I manged to get some files but still not the boot.img, I don't undestand why it just refuses to give them to me, I redownloaded everything at least 3 times...
Use Payload-Dumper-GUI instead of Payload-Dumper-Go
Hey @NickR01 if possible can you send me an boot.img and vbmeta
I don’t have windows pc so can’t use Payload-Dumper
It will also help future users to unbrick device.
NickR01 said:
Use Payload-Dumper-GUI instead of Payload-Dumper-Go
Click to expand...
Click to collapse
@vikas_anakin What's your device version?
cph2381 cph2409
NickR01 said:
@vikas_anakin What's your device version?
cph2381 cph2409
Click to expand...
Click to collapse
cph2381
@vikas_anakin I have files for eu variant, can't help you there bud. If flashed it can mess up your device.
If you are stuck with payload.bin extraction... try it with an android device.
Here's the tool for Android.
Payload-Dumper-Android
Here's the guide for it.
XDA Guide
Newb Guide
Follow the guide and download this app to extract the .bin file
Termux App: Termux Github
After the extraction, type fastboot (pc required) commands to flash and change current active slots from A to B if it's stuck in bootloop after flashing.
I hope this helps you recover your device.
NickR01 said:
@vikas_anakin I have files for eu variant, can't help you there bud. If flashed it can mess up your device.
If you are stuck with payload.bin extraction... try it with an android device.
Here's the tool for Android.
Payload-Dumper-Android
Here's the guide for it.
XDA Guide
Newb Guide
Follow the guide and download this app to extract the .bin file
Termux App: Termux Github
After the extraction, type fastboot (pc required) commands to flash and change current active slots from A to B if it's stuck in bootloop after flashing.
I hope this helps you recover your device.
Click to expand...
Click to collapse
Extracting the payload.bin is not an issue, The issue is I don't have stock firmware.
I used https://www.getdroidtips.com/oneplus-nord-ce-2-lite-5g-firmware-flash-file/ but my wifi and Bluetooth are not working after installing it.
Do you have any suggestions on how can i resolve these issues?
@vikas_anakin Download authentic firmware from this app. Files are pulled from OnePlus servers.
Google Playstore: Oxygen Updater
Oxygen Updater Settings -> Enable Advanced Mode
Select device region.
Latest update for holi is CPH2381_11_A.13 as of now.
I extracted the images from the payload.bin found in the Oxygen Updater file (that I had actually successfully used to update my device) and flashed 2 partitions:
fastboot flash vbmeta vbmeta.img
fastboot flash boot boot.img
I then rebooted and now it's stuck in a boot loop & I can't even access fastboot anymore. Can someone please help?
Thanks
EDIT:
I managed to access fastboot & flash the rest of the partitions to fix it.
Hi everyone, just to piggy back on this thread, I also have the same device, and I have unofficial twrp and boot loader unlocked, however I have no back up rom and just want to get the phone back to normal really. Ive been following guides all over the place, but could someone point me in the right direction ? can I just download a rom for the OP nord ce 2 lite 5g, put it on my phone and have twrp install it? could someone guide me please. many thanks!
lemonmuffs said:
Hi everyone, just to piggy back on this thread, I also have the same device, and I have unofficial twrp and boot loader unlocked, however I have no back up rom and just want to get the phone back to normal really. Ive been following guides all over the place, but could someone point me in the right direction ? can I just download a rom for the OP nord ce 2 lite 5g, put it on my phone and have twrp install it? could someone guide me please. many thanks!
Click to expand...
Click to collapse
Yes, that will work.
vikas_anakin said:
Yes, that will work.
Click to expand...
Click to collapse
Or else you can extract img files from the oneplus rom file.
and flash them using fastboot.
Okay thank you for the reply, would you be able to point me to a official img file ? Or maybe someone has one extracted I could use please? I have looked online, but the ones I have gotten don't seem to work. I have also looked on the oneplus website for an official img but I could not find one.
So after a little more research, I can use another android device with the app Oxygen updater, download the full img.... So I am currently doing that and then ill try use fastboot or twrp to flash. Just wanted to spread info incase anyone else is having issues getting latest official roms for this device.
Hey guys, i have bricked my Oneplus Nord ce 2 lite 5g (Cph2381)
I tried using the fastboot enhance tool to flash a payload.bin file i thought was the right one for the device ..the device went to blackscreen..ive tried switching it on but its not working..ive done alittle research and found out that i should use an msm tool to force flash the initial stock firmware so that it can boot up ...problem is i cant seem to find the right msm tool for Oneplus nord ce 2 lite 5g , which msm tool can i use ? help please
Jazzyjuis said:
Hey guys, i have bricked my Oneplus Nord ce 2 lite 5g (Cph2381)
I tried using the fastboot enhance tool to flash a payload.bin file i thought was the right one for the device ..the device went to blackscreen..ive tried switching it on but its not working..ive done alittle research and found out that i should use an msm tool to force flash the initial stock firmware so that it can boot up ...problem is i cant seem to find the right msm tool for Oneplus nord ce 2 lite 5g , which msm tool can i use ? help please
Click to expand...
Click to collapse
Hey man, I would suggest not going with msm tool or anything.
Just download the latest update file of your device using oneplus updater app, or you can ask for the file if some of your friends has the same device.
use this tool to extract payload files https://github.com/vm03/payload_dumper
Now you can follow the same procedure as here https://forum.xda-developers.com/t/...ock-oxygenos-firmware-on-oneplus-10r.4465077/

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