Database Users

[Hardbrick] Oneplus 2 Only fastboot, OEM and device locked.

So, as this is my first ever thread to this website and the reason why i have created this account, I am somewhat new to the XDA forums...
Nevertheless, i will state my problem here:
Right now, my phone and my limited knowledge about it have come to an dead end. with the help of online tutorials and so on, (I have downloaded almost 40 gigabytes worth of space to do stuff to my phone), i was able to only get the fastboot mode to work again.
It started with me uninstalling a system app from google (I don't know which one exactly, but i had the resurrection remix 5.69 or something like it, and in that ones system app remover it was one of the lowest google apps). I don't know if this is important, but at the time i did that i was in plane mode.
After some time i ran into some loading issues with games and restarted my phone. the first time i got in, i booted up normally and could do my pattern normally, but then there was only a black screen and i could pull that info bar thing down. as soon as i wanted to open the settings, everything froze and i decided to restart the phone. Once it was shut down i then got greeted by a bootloop which i aborted by shutting down after about 3 minutes. then nothing was working anymore, so i wanted to see if the fastboot mode was still available. it was, but after shutting down from that and trying again ( just to be sure) even that was gone.
so i went online and downloaded basically everything you can find online to recover a harbricked op2.
turns out, after i got my fastboot working again, the OEM and the device were locked (still not sure if those are different things or the same) and because i couldnt get in the android system, i could not enable it.
the ADB commands do not work at all because there is no device detected for it, though it is detected for fastboot. the command fastboot OEM unlock does not work because OEM unlocking is disabled...
so far i have been able to connect my phone in 3 modes and names for those, them being:
Android Bootloader interface (Fastboot)
Qualcomm HS-USB Diagnostics 900E (Connected while holding VolUp)
RELINK HS-USB QDLoader 9008 (Connected while holding VolUp + VolDown)
I am also unable to flash anything on the phone because the OEM is locked
I will not be able to answer for some time (probably 2-3 weeks) but i wanted to start this thread so I could already have an answer when i come back home again (traveling with fam, and its somewhat hard to take a PC tower with you on trips)
Thanks for helping me! :fingers-crossed:

I'm having the exact same issue as OP.
I'm not sure exactly what I did, but I can only boot to fastboot. Typing fastboot continue does not work, I can't flash ANYTHING or use any of the recovery tools, because my device is locked, and there's no system to boot to so I can run fastboot oem unlock (have to turn on debugging, which I can't do). I have read just about every guide there is, and also downloaded a boatload of purported "fix" tools/drivers/packages. My phone remains able to boot only into fastboot, and I can't get anything working.
Installing the device drivers did work for me, so I'm about half a step ahead of some other people with this issue, but none of the tools or scripts I've found, or manual methods, have brought my OP2 back to life.
I'm really, really hoping someone here is able to help with this.

Only way is restore with Qualcomm tool
Sent from my SM-N920C using Tapatalk

Coolmfarshard said:
Only way is restore with Qualcomm tool
Sent from my SM-N920C using Tapatalk
Click to expand...
Click to collapse
Sorry, but could you link us that?
Also,does this really work with a locked device and locked OEM? Please do not tell us things if you don't know if they work.

http://forum.xda-developers.com/oneplus-2/general/oneplus-solution-hard-bricked-device-t3183449

Lonemaster said:
Sorry, but could you link us that?
Also,does this really work with a locked device and locked OEM? Please do not tell us things if you don't know if they work.
Click to expand...
Click to collapse
Its working bro tried several phones with this tool
You cant know its working or not without trying

Coolmfarshard said:
Its working bro tried several phones with this tool
You cant know its working or not without trying
Click to expand...
Click to collapse
Ok, Thanks. Don't know what i was thinking back then.
I will reply again when i am Home and tried it. (Currently i am just using Internet cafes.)

MickyFoley said:
http://forum.xda-developers.com/oneplus-2/general/oneplus-solution-hard-bricked-device-t3183449
Click to expand...
Click to collapse
Oh, it is that one. I had already tried this one, in all listed modes posted above. The problem with that one is that everytime I hit the start button, the green progress bar does not show up and it does not a single thing... because I am staying at a place with a internet café for 3 days, I can download some stuff and try it again.
EDIT: I don't know if that was the reason It didn't work, but I may or may not have forgotten to install the driver because it was deleted off the onedrive page and I just forgot about it afterwards. if I can find a replacement for it, I will ink it here for future users with the same problem. otherwise, I would be GLaD if someone would do that for me...

Have you tried flashing a stock ROM with the qcom download tool

abdur10567 said:
Have you tried flashing a stock ROM with the qcom download tool
Click to expand...
Click to collapse
I am not sure if it is that one (it gets pretty messy wehen you have downloaded 50 gigs), but i think it wouldn't let Me because of the locked OEM.

Lonemaster said:
So, as this is my first ever thread to this website and the reason why i have created this account, I am somewhat new to the XDA forums...
etc. etc.
Thanks for helping me! :fingers-crossed:
Click to expand...
Click to collapse
For some reason, after doing it for the what felt like the billionth time whith the restore tool it finally worked (I have NO ****ING IDEA why tho.)
Thanks for everybody who helped me.

Unusable A2017G

So i have this A2017G owned by a cousin of mine. He had never tempered with anything except updating OTAs from the settings app. Meaning Stock everything and BL locked. Now, all of a sudden his device lags a lot (after the N-B06 update). When booting the device the boot animation lags like crazy. And it almost never gets past the boot animation (always restarts at Axon 7). The times it does reach past the boot screen, the device hangs after a minute or so and restarts.
Things that i have tried:
# Factory resetting through stock recovery.
# Downloading update.zips from ZTE and trying SD Card update trough stock recovery. Which always fails saying Signature verification failed.
# Booted to factory test mode and tried adb devices on cmd. Nothing comes up as there is no new device on the device manager. Also no sound.
# Booted to EDL mode and flashed N-B06 from this post: https://forum.xda-developers.com/axon-7/how-to/guide-ztea2017v2-0-0b08-t3658636
Nothing helped. Same old lags. And of course, the device is unusable.
What to do? Suggestions?

nsabir said:
So i have this A2017G owned by a cousin of mine. He had never tempered with anything except updating OTAs from the settings app. Meaning Stock everything and BL locked. Now, all of a sudden his device lags a lot (after the N-B06 update). When booting the device the boot animation lags like crazy. And it almost never gets past the boot animation (always restarts at Axon 7). The times it does reach past the boot screen, the device hangs after a minute or so and restarts.
Things that i have tried:
# Factory resetting through stock recovery.
# Downloading update.zips from ZTE and trying SD Card update trough stock recovery. Which always fails saying Signature verification failed.
# Booted to factory test mode and tried adb devices on cmd. Nothing comes up as there is no new device on the device manager. Also no sound.
# Booted to EDL mode and flashed N-B06 from this post: https://forum.xda-developers.com/axon-7/how-to/guide-ztea2017v2-0-0b08-t3658636
Nothing helped. Same old lags. And of course, the device is unusable.
What to do? Suggestions?
Click to expand...
Click to collapse
Get a new phone. Unfortunately I think it's some hardware that is broken. But in case it's not try to flash b05 instead?

I don't see anything else you could do since adb doesn't seems to work. I'd just RMA it with the warranty still being in effect. And if it was purchased trough amazon you'll probably just get a new one ! (that's what happened to me last time).

nsabir said:
So i have this A2017G owned by a cousin of mine. He had never tempered with anything except updating OTAs from the settings app. Meaning Stock everything and BL locked. Now, all of a sudden his device lags a lot (after the N-B06 update). When booting the device the boot animation lags like crazy. And it almost never gets past the boot animation (always restarts at Axon 7). The times it does reach past the boot screen, the device hangs after a minute or so and restarts.
Things that i have tried:
# Factory resetting through stock recovery.
# Downloading update.zips from ZTE and trying SD Card update trough stock recovery. Which always fails saying Signature verification failed.
# Booted to factory test mode and tried adb devices on cmd. Nothing comes up as there is no new device on the device manager. Also no sound.
# Booted to EDL mode and flashed N-B06 from this post: https://forum.xda-developers.com/axon-7/how-to/guide-ztea2017v2-0-0b08-t3658636
Nothing helped. Same old lags. And of course, the device is unusable.
What to do? Suggestions?
Click to expand...
Click to collapse
Did you try downgrading through EDL? I'll post the link to MM B10 for you to install through EDL, see if that helps. I seriously doubt that it's a hardware issue since it would not even boot if that was the case (take the Nexus 6P and 5X as an example: big cores busted and the phones wouldn't get past the boot logo).
Don't unlock the bootloader if you can't fix it, it'd make matters worse if LOS-based ROMs didn't work.
Edit: Here are a couple of links for B10 from 4pda. should be the same file:
https://drive.google.com/file/d/0Bynn_Z9_tfeOZWZmN1o2U09pWVU/view
https://mega.nz/#!ZhwR1BAD!PuIWa5Vivk3DxZ1Dgk-wAoITxiKmBiR-j1U8wZZidTw

Choose an username... said:
Did you try downgrading through EDL? I'll post the link to MM B10 for you to install through EDL, see if that helps. I seriously doubt that it's a hardware issue since it would not even boot if that was the case (take the Nexus 6P and 5X as an example: big cores busted and the phones wouldn't get past the boot logo).
Don't unlock the bootloader if you can't fix it, it'd make matters worse if LOS-based ROMs didn't work.
Edit: Here are a couple of links for B10 from 4pda. should be the same file:
https://drive.google.com/file/d/0Bynn_Z9_tfeOZWZmN1o2U09pWVU/view
https://mega.nz/#!ZhwR1BAD!PuIWa5Vivk3DxZ1Dgk-wAoITxiKmBiR-j1U8wZZidTw
Click to expand...
Click to collapse
I have tried this EDL package as well. Most of the time it says can not found programmer file. Only once it said can not find hello packet, reset status. That also ended up in error.
The N-B06 EDL package flashes fine. But the problem still persists.
I have also tried replacing N-B06 recovery.img with TWRP recovery.img and flashed it. But that just bricks the recovery.
Currently the 2 EDL packages i know are these two. N-B06 and MM-B10 for the G. The N one works fine while the MM one doesn't. Do u have any other EDL packages?
I too think it's a software problem since he has never dropped the phone and only used it for 2 months.

nsabir said:
I have tried this EDL package as well. Most of the time it says can not found programmer file. Only once it said can not find hello packet, reset status. That also ended up in error.
The N-B06 EDL package flashes fine. But the problem still persists.
I have also tried replacing N-B06 recovery.img with TWRP recovery.img and flashed it. But that just bricks the recovery.
Currently the 2 EDL packages i know are these two. N-B06 and MM-B10 for the G. The N one works fine while the MM one doesn't. Do u have any other EDL packages?
I too think it's a software problem since he has never dropped the phone and only used it for 2 months.
Click to expand...
Click to collapse
I think something is wrong with the hardware. I had a similar problem as u with my last phone a honor 8, it frozed up and it was nothing I couldnt do other than go back to the store with it. I got a new one.

nsabir said:
I have tried this EDL package as well. Most of the time it says can not found programmer file. Only once it said can not find hello packet, reset status. That also ended up in error.
The N-B06 EDL package flashes fine. But the problem still persists.
I have also tried replacing N-B06 recovery.img with TWRP recovery.img and flashed it. But that just bricks the recovery.
Currently the 2 EDL packages i know are these two. N-B06 and MM-B10 for the G. The N one works fine while the MM one doesn't. Do u have any other EDL packages?
I too think it's a software problem since he has never dropped the phone and only used it for 2 months.
Click to expand...
Click to collapse
I got that package from 4pda. if you go to the 4th category brick repair manual, then enter the link that says "Qualcomm drivers and MiFlash" it will redirect you to 4pda. no need to translate: just open the spoilers (I think it's the 2nd) and you'll find all of the images. You obviously have to use the A2017G ones. there's B10, i think B11, B05, B06 and maybe another N package too
The thing is that it'd be best if you could downgrade to Marshmallow, as that would probably do some other stuff that N packages don't do.

Do you have an external SD card plugged in? Try to use without external sd, i already had lags because of a defective sd card (that couldnt be rescued nor reformatted )

Perru said:
Do you have an external SD card plugged in? Try to use without external sd, i already had lags because of a defective sd card (that couldnt be rescued nor reformatted )
Click to expand...
Click to collapse
I was gonna suggest that, but a read-only SD card wouldn't provoke that. I had one that got read-only after using it as swap for a long time, and you would only notice in twrp (booted in ~2 minutes). If he was able to try to install a system update through the recovery, he was able to write to the SD card --> it's not dead

Perru said:
Do you have an external SD card plugged in? Try to use without external sd, i already had lags because of a defective sd card (that couldnt be rescued nor reformatted )
Click to expand...
Click to collapse
It lags the same. Regardless a sd card is inserted or not.

Choose an username... said:
I got that package from 4pda. if you go to the 4th category brick repair manual, then enter the link that says "Qualcomm drivers and MiFlash" it will redirect you to 4pda. no need to translate: just open the spoilers (I think it's the 2nd) and you'll find all of the images. You obviously have to use the A2017G ones. there's B10, i think B11, B05, B06 and maybe another N package too
The thing is that it'd be best if you could downgrade to Marshmallow, as that would probably do some other stuff that N packages don't do.
Click to expand...
Click to collapse
Thank you for mentioning there is EDL packages in 4pda. I just tried the packages that are available for the G variant on 4pda. But the problem still persists.
I was thinking that too. Trying to downgrade through EDL. But so far i've found only one MM so far, B10. But that ends up in error during flashing process.
Is there any way to install TWRP through EDL without unlocking bootloader? Also, is there any way to unlock BL without adb? If i could at least unlock the BL, i could flash twrp through EDL. There are EDL packages available for flashing TWRP.
Thanks.

nsabir said:
Thank you for mentioning there is EDL packages in 4pda. I just tried the packages that are available for the G variant on 4pda. But the problem still persists.
I was thinking that too. Trying to downgrade through EDL. But so far i've found only one MM so far, B10. But that ends up in error during flashing process.
Is there any way to install TWRP through EDL without unlocking bootloader? Also, is there any way to unlock BL without adb? If i could at least unlock the BL, i could flash twrp through EDL. There are EDL packages available for flashing TWRP.
Thanks.
Click to expand...
Click to collapse
Why don't u just go back to the store with it and get a new one? Its clearly something that can't be fixed by yourself unfortunately.

jw1985 said:
Why don't u just go back to the store with it and get a new one? Its clearly something that can't be fixed by yourself unfortunately.
Click to expand...
Click to collapse
Not all that clear, but yeah the last thing I'd do is unlock the bootloader.

Choose an username... said:
Not all that clear, but yeah the last thing I'd do is unlock the bootloader.
Click to expand...
Click to collapse
Mabey but I think as in my case that something has happened with the hardware. I think it is a hardware's fault that has come up to the surface when he updated the phone like it did 2 me. But hey, it's just my theory.

jw1985 said:
Why don't u just go back to the store with it and get a new one? Its clearly something that can't be fixed by yourself unfortunately.
Click to expand...
Click to collapse
Choose an username... said:
Not all that clear, but yeah the last thing I'd do is unlock the bootloader.
Click to expand...
Click to collapse
jw1985 said:
Mabey but I think as in my case that something has happened with the hardware. I think it is a hardware's fault that has come up to the surface when he updated the phone like it did 2 me. But hey, it's just my theory.
Click to expand...
Click to collapse
The problem is axon 7 is not available in our country. If he has to rma it then he has to send it to a relative in Sweden. Then the relative can do that for him. That's why he asked me to do what i can to revive the phone. RMA is the last resort for him.
Now, i guess i will give up and tell him i did everything i could.
Anyways, thank you all for helping.

Bricked my Chinese OP6t (A6010) and not sure what to do. Help??

I was trying to help a friend out by installing the international OS on his new OP6T (A6010) because I know a friend who did it a year or two ago and it worked perfectly. We thought it would work out but I couldn't get the firmware to install using the normal system update--it said that the firmware was lower than the currently installed firmware and therefore couldn't be installed.
So, I tried downgrading using the msm tool (I didn't realize the Chinese version was different...) and now it is stuck in a boot loop saying "build version and HW version is not match!"
What options do I have here? I didn't install TWRP (I was going to but tried the MSM tool because people were recommending it on many other sites...but were only talking about Tmobile and Global variants so I didn't realize Chinese was an entirely separate one).
Is there any way to fix this?

You can get it into fastboot right? I'd push the latest official fastboot ROM into it via ADB.

snatale1 said:
You can get it into fastboot right? I'd push the latest official fastboot ROM into it via ADB.
Click to expand...
Click to collapse
No, when I hold any combination of buttons, it gives me the error message. I can't do anything with it at the moment.
I got it to flash "fastboot mode" for a moment, but then the error message went up again and black screen.

That's weird, fastboot should be coming up before it tries to load the OS, you're going to be left with reflashing (in your case) HydrogenOS via download mode and MSM.

snatale1 said:
That's weird, fastboot should be coming up before it tries to load the OS, you're going to be left with reflashing (in your case) HydrogenOS via download mode and MSM.
Click to expand...
Click to collapse
Thank you for the information here with this. Are all msm things specific to certain firmwares or is it possible to throw a firmware into an msm thing? I'm not sure about this one yet.

I have a A6010 I have used this to go back to Android 9 with out issue.
https://androidfilehost.com/?fid=1395089523397966003

mchlbenner said:
I have a A6010 I have used this to go back to Android 9 with out issue.
https://androidfilehost.com/?fid=1395089523397966003
Click to expand...
Click to collapse
Thank you for your help here.
Unfortunately I keep getting the same message again and again in all of the msm tools I've tried: images do not match with the phone.
I'm not sure how I've done it but I've messed it up badly and now not sure how to fix it.

nightcow said:
Thank you for your help here.
Unfortunately I keep getting the same message again and again in all of the msm tools I've tried: images do not match with the phone.
I'm not sure how I've done it but I've messed it up badly and now not sure how to fix it.
Click to expand...
Click to collapse
You're going into download mode correctly right? Holding BOTH Vol buttons while then plugging into the USB cable thats already in your comp?

snatale1 said:
You're going into download mode correctly right? Holding BOTH Vol buttons while then plugging into the USB cable thats already in your comp?
Click to expand...
Click to collapse
Yeah, I was able to get it recognized by the computer and the msm software. It was just not accepting it.
I actually finally got it to work, though, but using the patched version of the msm tool that Tmobile users were using to install the international firmware, because it ignores the check for hardware/firmware matching and just forces the firmware on there.
It took two different msm tools/firmwares but finally it worked out. It was an incredibly relieving sight to see it boot up and not immediately go into the same bootloop again.

Glad to see you got it going.

Good day, please I got into the same issue of hardbrick on my oneplus 6t chinese variant. Please would you be kind enough to give a break down on how you got it to work. And were you able to finally install Oxygen OS?

OnePlus 8 Pro refuses to install TWRP. Qualcomm Crash Dumps every time. Any advice?

I want to install TWRP as my recovery I've tried at least four different versions that are listed here and a few others from other links:
https://forum.xda-developers.com/t/...p-for-oneplus-8-8-pro-unified-stable.4101313/
I'm not having driver issues anymore so I'm working with adb and fastboot fine. All commands are going through fine and I've tried flashing to recovery_a and recovery_b. Factory resetting doesn't resolve the issue. Every walkthrough I find I get to says flash then boot to TWRP but every time I flash it qualcomm dumps and every time I boot to it it qualcomm dumps.
Is there something corrupted in my recovery I need to wipe somehow? If so how do I wipe it because the only command I found online that would run was fastboot -w and that didn't fix the issue either.
Honestly really annoying at this. This is my 4th OnePlus phone and I've never had so many issues flashing it.
Edit:
I have also tried to do whatever steps are needed to go back to base stock and OS and it doesn't seem to work either. Any help would be appreciated.
Edit 2:
I did it. For anyone who finds this thread in the future the MSM tool did finally work. This is the video I used in the end
(I muted it.) and the first few starts it failed. I went into the properties of the MSM exe and under compatibility checked ran as admin. I also did install the qualcomm driver at some point way before this so not sure if that helped. The MSM tool still didn't work until I started it, turned my phone off, held both volume buttons (not the power) while plugging the phone in. All the stuff online I saw had people starting the program at this point but mine had started already and was in a "waiting for device" state when it worked.
What a lifesaver. Won't be messing around with this again until TWRP is available.

Because you are unable to flash phone's Stock ROM take phone to authorized service center and let them fix it.

Flash stock recovery. TWRP is but compatible with OOS11 for 8/Pro.
Edit: not

Lossyx said:
Flash stock recovery. TWRP is but compatible with OOS11 for 8/Pro.
Click to expand...
Click to collapse
I have had so much trouble figuring that out too. Do you have a good link for that? I can't find an easy way to do it. I've seen people recommend the msmdownloadtool but every time I use it it doesn't pick up my phone.
I've settled with Lineage OS and Gapps until I figure out more.

TheFloppyDisk said:
I have had so much trouble figuring that out too. Do you have a good link for that? I can't find an easy way to do it. I've seen people recommend the msmdownloadtool but every time I use it it doesn't pick up my phone.
I've settled with Lineage OS and Gapps until I figure out more.
Click to expand...
Click to collapse
Meant to say it's **not** compatible with Android 11 yet.

Lossyx said:
Meant to say it's **not** compatible with Android 11 yet.
Click to expand...
Click to collapse
Sorry if I wasn't clear either. I was wondering if you have a good resource for flashing the stock again. I haven't been able to myself.

TheFloppyDisk said:
Sorry if I wasn't clear either. I was wondering if you have a good resource for flashing the stock again. I haven't been able to myself.
Click to expand...
Click to collapse
The same way to flashed TWRP.
fastboot flash recovery recovery_a and _b.
In the future, you should not flash both slots, just flash without specifying _a or _b.
Recovery image can be obtained here;
Android Dumps / oneplus / oneplus8pro · GitLab
GitLab Enterprise Edition
dumps.tadiphone.dev
Although i am not sure which OOS version you use, so you might have to change branch

Lossyx said:
The same way to flashed TWRP.
fastboot flash recovery recovery_a and _b.
In the future, you should not flash both slots, just flash without specifying _a or _b.
Recovery image can be obtained here;
Android Dumps / oneplus / oneplus8pro · GitLab
GitLab Enterprise Edition
dumps.tadiphone.dev
Although i am not sure which OOS version you use, so you might have to change branch
Click to expand...
Click to collapse
I hate to be this much of a noob about it but I see a recovery file listed in the link you sent. Is that the recovery I flash? And if so after flashing is this branch also a stock rom? I've been trying for a while now just to get back to the basic oxygen that comes with the phone but it's been a nightmare for me and it feels like no resource I find fully explains it.

TheFloppyDisk said:
I hate to be this much of a noob about it but I see a recovery file listed in the link you sent. Is that the recovery I flash? And if so after flashing is this branch also a stock rom? I've been trying for a while now just to get back to the basic oxygen that comes with the phone but it's been a nightmare for me and it feels like no resource I find fully explains it.
Click to expand...
Click to collapse
If you want OOS back / new start, best way is really to use MSM. Haven't really used it, so can't help you much. There are tutorials online / YouTube though

Lossyx said:
If you want OOS back / new start, best way is really to use MSM. Haven't really used it, so can't help you much. There are tutorials online / YouTube though
Click to expand...
Click to collapse
Gotcha. Unfortunately I haven't been able to get MSM to recognize my phone yet but I guess I will keep working on it and see what I can do. Thanks for your help.

TheFloppyDisk said:
Gotcha. Unfortunately I haven't been able to get MSM to recognize my phone yet but I guess I will keep working on it and see what I can do. Thanks for your help.
Click to expand...
Click to collapse
It is very sensitive to which USB port you use. For some people only USB2.0 works, for me USB3 works fine as long as it's chipset USB3. The second ASMedia controller doesn't work.
Also, use original cable, and switch off the phone completely, get MSM to the point it's waiting for device so start the download before connecting phone, then while holding the volume keys connect the USB cable and it should instantly start flashing.

"Warning" Total Brick After Flashing Android 12 Beta

My phone is totally bricked, and it will not respond to anything, a totally black screen, after flashing Android 12 Beta using Fastboot.
I was on A12 Beta, I hated it, I wanted to flash AOSP, it did not work, so I decided to flash OOS 11 from Fastboot, it did not work either, I tried EDL MSM tool, it did not work either, it kept on booting into fastboot, fastboot loop, I extracted the payload.bin from A12 Beta using payload_dumper, I ran flash-all script, the phone successfully booted into fastboot the at the first section from the script, flashed the remaining files, when the phone attempted to rebooted for the final time after the script was completed successfully with no errors, the phone died at the final part of the script, which is the final boot, and it will not respond to anything, no sign of anything, complete black screen, I tried EDL mode, I tried everything, it's not responding to anything, I opened the phone and reseated the battery and the motherboard, still nothing. So Sad

Flashing roms via fastboot never works for me.
You should read the threads next time, there is no custom rom that works from a12, every rom need a11 as a base. And yes the a12 custom roms too.
Your only option is and was the MSM tool.
I was in a similar situation, i got my phone back with pressing vol +, vol - and power for i think several minutes while connected with a third party cable to my pc with msm tool where i already pressed start.
It started to flash everything somehow and i got a working phone.
Good luck.

A quick note: EDL mode will show nothing nor vibrate. The only way you know it's in EDL mode is that it's going to show up in MSM tool.
Just try using the MSM tool.
Start the program.
Hold the Vol Up and Vol Down at the same time for 5 seconds, then connect your phone to your PC.
If it doesn't show up in the MSM tool list, just hit Enum.
If you see the phone just click Start and wait for it to complete. For me it's usually around 300 sec.

xtcislove said:
Flashing roms via fastboot never works for me.
You should read the threads next time, there is no custom rom that works from a12, every rom need a11 as a base. And yes the a12 custom roms too.
Your only option is and was the MSM tool.
I was in a similar situation, i got my phone back with pressing vol +, vol - and power for i think several minutes while connected with a third party cable to my pc with msm tool where i already pressed start.
It started to flash everything somehow and i got a working phone.
Good luck.
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Click to collapse
Yes, OSS 11 is a must, I have tried downgrading and I guess "downgrading" is the issue here.
I have been using OnePlus since its first release, I am very familiar with it,
I have tried everything, but nothing works, I read more about this, and looks like the circuit is out of order, it will not pass anything "signal", especially to the screen.

nkhater said:
Yes, OSS 11 is a must, I have tried downgrading and I guess "downgrading" is the issue here.
I have been using OnePlus since its first release, I am very familiar with it,
I have tried everything, but nothing works, I read more about this, and looks like the circuit is out of order, it will not pass anything "signal", especially to the screen.
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Click to collapse
Thats possible im not a pro. But from my understanding, its nearly impossible to brick a phone which is using a/b partitions via fastboot.
You tried a third party cable?

daviddosa said:
A quick note: EDL mode will show nothing nor vibrate. The only way you know it's in EDL mode is that it's going to show up in MSM tool.
Just try using the MSM tool.
Start the program.
Hold the Vol Up and Vol Down at the same time for 5 seconds, then connect your phone to your PC.
If it doesn't show up in the MSM tool list, just hit Enum.
If you see the phone just click Start and wait for it to complete. For me it's usually around 300 sec.
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Click to collapse
true, but no Qualcomm port is shown in the windows device manager, and no sound coming from the laptop, it's cooked
xtcislove said:
Thats possible im not a pro. But from my understanding, its nearly impossible to brick a phone which is using a/b partitions via fastboot.
You tried a third party cable?
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Click to collapse
Yes fail-safe a/b partition, and Yes I have tried several cables

nkhater said:
true, but no Qualcomm port is shown in the windows device manager, and no sound coming from the laptop, it's cooked
Yes fail-safe a/b partition, and Yes I have tried several cables
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Click to collapse
My last suggestion is to try to charge overnight and see if things are different tomorrow.
Other than that, only option is RMA as it's still under warranty.
Forgot that you already opened up the phone, so most likely they'll throw it back as it was opened by an unauthorized party.

daviddosa said:
My last suggestion is to try to charge overnight and see if things are different tomorrow.
Other than that, only option is RMA as it's still under warranty.
Forgot that you already opened up the phone, so most likely they'll throw it back as it was opened by an unauthorized party.
Click to expand...
Click to collapse
did that too, leaving it overnight did not work either.
I hope this will be an eye-opener for other flashaholics, things are different in A12

my phone has the same problem, have you fixed it, i need help

[email protected] said:
my phone has the same problem, have you fixed it, i need help
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Click to collapse
no fix has to call support and use your warranty, the logic board is fried, this is a disaster, everyone, be careful, I want to sue them so bad

nkhater said:
no fix has to call support and use your warranty, the logic board is fried, this is a disaster, everyone, be careful, I want to sue them so bad
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Click to collapse
Made a thread about it to warn others and hopefully prevent more bricks from happening.
[GUIDE] How to Avoid Killing Your OnePlus 8 Pro / 8T / 9R with OxygenOS 12 / ColorOS 12
As You can see, recently we started seeing more and more threads complaining about OxygenOS 12 killing people's devices. I lost my 8 Pro the same way few months ago and we finally know what caused this! ANSWER - THE BOOTLOADER! Massive Update...
forum.xda-developers.com

ProtoDeVNan0 said:
Made a thread about it to warn others and hopefully prevent more bricks from happening.
[GUIDE] How to Avoid Killing Your OnePlus 8 Pro / 8T / 9R with OxygenOS 12 / ColorOS 12
As You can see, recently we started seeing more and more threads complaining about OxygenOS 12 killing people's devices. I lost my 8 Pro the same way few months ago and we finally know what caused this! ANSWER - THE BOOTLOADER! Massive Update...
forum.xda-developers.com
Click to expand...
Click to collapse
OMG

Nobody believed me in the threads when this happened (end of Feb/early Mar). This wasn't spiteful in anyway either. It was more/less just unheard of and my methods and adherence to the most vital aspects for EDL recovery, were justifiably questioned. Unfortunately, in my case, I have had years of experience jacking-up my devices and I immediately knew/felt there was something different with this situation. In my situation though, when introducing how I had entered the predicament, it was strictly self-inflicted, complacency at its finest and terrible terrible timing for a well overdue slap-in-the-head to interject itself into my life. Did I mention I was OMW to Disney with m/wife, kids.....driving. I had 7 days to deal with at Disney with a pre-planned, fresh-flashed A-12 OP8....I ended up using my LG G3 which I had been spending significant time trying to develop into a dedicated full-fledged Kali device (had success w/that actually).
So seeing these posts and threads now is dis-heartening but vindicating. Had I not flashed A-12 the way I did, I would've been fine. I can not blame OnePlus for anything, I bought a locked-down (carrier unlocked) Note 10+ in its place and its driving me bonkers. I thought I would be able to tolerate the non-rootiness, but I've been flashing since my 1st smartphone, one of the 1st Galaxy's, the Verizon Fascinate.....good ol' Jelly Bean. Meanwhile, my lifeless OP8 sits on my desk upstairs surrounded by older devices.....its the only one that doesn't turn on.

Mar 3rd I posted for the 1st time about it.
OxygenOS 12 [OB1] [Oneplus 8 Pro] - First Open Beta of Global OOS12
*Will update thread as rn im at work* The first Open Beta for Global OOS has been release really quietly (no announcemment so far) but here is the link from where i download it...
forum.xda-developers.com

djcrystals said:
Nobody believed me in the threads when this happened (end of Feb/early Mar). This wasn't spiteful in anyway either. It was more/less just unheard of and my methods and adherence to the most vital aspects for EDL recovery, were justifiably questioned. Unfortunately, in my case, I have had years of experience jacking-up my devices and I immediately knew/felt there was something different with this situation. In my situation though, when introducing how I had entered the predicament, it was strictly self-inflicted, complacency at its finest and terrible terrible timing for a well overdue slap-in-the-head to interject itself into my life. Did I mention I was OMW to Disney with m/wife, kids.....driving. I had 7 days to deal with at Disney with a pre-planned, fresh-flashed A-12 OP8....I ended up using my LG G3 which I had been spending significant time trying to develop into a dedicated full-fledged Kali device (had success w/that actually).
So seeing these posts and threads now is dis-heartening but vindicating. Had I not flashed A-12 the way I did, I would've been fine. I can not blame OnePlus for anything, I bought a locked-down (carrier unlocked) Note 10+ in its place and its driving me bonkers. I thought I would be able to tolerate the non-rootiness, but I've been flashing since my 1st smartphone, one of the 1st Galaxy's, the Verizon Fascinate.....good ol' Jelly Bean. Meanwhile, my lifeless OP8 sits on my desk upstairs surrounded by older devices.....its the only one that doesn't turn on.
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Click to collapse
That's so fed'ed up man, I am in the same boat as you, total loss, I am done with OnePlus, they can enjoy Oppo and ColorOS, A12 sucks and it's not for me.

Had to replace the motherboard (and flash the old persist partition to get the fingerprint sensor to work) due to this flash ddr mismatch crap. Shame on oneplus. They're being way too careless on this "unifying" trend.

Andre Cancian said:
Had to replace the motherboard (and flash the old persist partition to get the fingerprint sensor to work) due to this flash ddr mismatch crap. Shame on oneplus. They're being way too careless on this "unifying" trend.
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Click to collapse
how much did you pay for the motherboard?

nkhater said:
how much did you pay for the motherboard?
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I paid something like 250 USD for a working 8 Pro with a broken screen. Motherboards on their own were available for a similar price on sites like aliexpress, but the wait was too much.

nkhater said:
My phone is totally bricked, and it will not respond to anything, a totally black screen, after flashing Android 12 Beta using Fastboot.
I was on A12 Beta, I hated it, I wanted to flash AOSP, it did not work, so I decided to flash OOS 11 from Fastboot, it did not work either, I tried EDL MSM tool, it did not work either, it kept on booting into fastboot, fastboot loop, I extracted the payload.bin from A12 Beta using payload_dumper, I ran flash-all script, the phone successfully booted into fastboot the at the first section from the script, flashed the remaining files, when the phone attempted to rebooted for the final time after the script was completed successfully with no errors, the phone died at the final part of the script, which is the final boot, and it will not respond to anything, no sign of anything, complete black screen, I tried EDL mode, I tried everything, it's not responding to anything, I opened the phone and reseated the battery and the motherboard, still nothing. So Sad
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Click to collapse
hello, did you solve your problem? Or did you change your motherboard? I'm having the same problem right now and I don't know what to do

you need to replace the motherboard, the phone is completely dead, it's gone