Database Users

Nexus 7 stuck in APX mode, Won´t turn ON, No Backlight.

Hello Guys, beforehand, sorry for bad formatting and some english mistakes.
Let me explain what happened.
I was trying to unlock my Nexus 7 bootloader, but I couldn´t get to the Fastboot mode via adb, so I decided to enter fastboot mode by pressing Power + Volume Down button, but I did this while my tablet was connected to the PC, and after that, it shut down and just don´t turned on anymore. (Never got to fastboot mode)
Now when I connect to windows it only show as an AXP Device and it disconnects and connects when i hold Power button, but never starts.
Also I want to note that.
I didn´t manage to get into fastboot mode.
I didn´t manage to unlock the bootloader.
Didn´t install any Custom Rom.
The device is technically 100% stock, so I don´t expect it to be a Hard Brick, but at the same time, I tried all the button combinations and it still wont turn on.
This happened to anyone? Do you guys have any idea what it could be? Any Sollutions for this?
Thank you.
(Edit: I don´t have the Blobs.bin file in case i need to use the Nvflash.)

Gabu1405 said:
Hello Guys, beforehand, sorry for bad formatting and some english mistakes.
Let me explain what happened.
I was trying to unlock my Nexus 7 bootloader, but I couldn´t get to the Fastboot mode via adb, so I decided to enter fastboot mode by pressing Power + Volume Down button, but I did this while my tablet was connected to the PC, and after that, it shut down and just don´t turned on anymore. (Never got to fastboot mode)
Now when I connect to windows it only show as an AXP Device and it disconnects and connects when i hold Power button, but never starts.
Also I want to note that.
I didn´t manage to get into fastboot mode.
I didn´t manage to unlock the bootloader.
Didn´t install any Custom Rom.
The device is technically 100% stock, so I don´t expect it to be a Hard Brick, but at the same time, I tried all the button combinations and it still wont turn on.
This happened to anyone? Do you guys have any idea what it could be? Any Sollutions for this?
Thank you.
(Edit: I don´t have the Blobs.bin file in case i need to use the Nvflash.)
Click to expand...
Click to collapse
Take a look at this comprehensive listing of Nexus 7 button presses/interrupts. They may be of some use...
https://forum.xda-developers.com/showthread.php?p=37606945#post37606945
Hi, Gabu1405...
APX mode is never a good sign with the Nexus 7. It usually indicates that the bootloader has become corrupted, erased or overwritten (by something that is not a valid bootloader). When this occurs, the device is hardbricked and usually requires a motherboard replacement to resurrect the device, although there is a procedure called 'flatline', but this requires previously generated device unique 'blob' files, which you mention in your post.
Having said all of that though, nothing in your description should have caused the bootloader to have become 'damaged'. In order to erase, corrupt or overwrite the bootloader, your device would need to be bootloader unlocked in the first place, because a locked bootloader prohibits any unauthorised write access - bootloader locked devices can only be system 'modified' by official digitally signed updates from Google, which are flashed via the stock recovery.
Are you certain the Nexus 7 is showing as an APX device in Windows device manager?
What was the battery status/percentage when you attempted to unlock the bootloader? Maybe the tablet just needs a good charge, maybe for several hours!
You don't unlock the bootloader with ADB. Android Debug Bridge only works in fully booted Android and with the stock factory recovery. You need to use fastboot to unlock the bootloader, the command being fastboot oem unlock, whilst the device is in fastboot mode, which you boot into via the Volume Down+Power Button key press combo, as you mention in your post.
How it (may have) got into APX mode is certainly strange, because as I've said, this isn't something that normally happens spontaneously - when it happens, it's often due to people mistakenly flashing an incorrect .IMG file to the bootloader partition, causing the bootloader to be overwritten. A possible explanation is hardware failure, and that the emmc/NAND chip storage has developed a fault, and caused the bootloader to become corrupted. It's worth bearing in mind that the Nexus 7 is now seven years old, and with the best will in the world, these things don't last forever, unfortunately. Components fail and data corruptions occur.
If your Nexus 7 is truly in APX mode, for whatever reason, then I'm afraid it's likely hardbricked, and a motherboard replacement is the only realistic way of resurrecting it.
I can only suggest you try charging your Nexus 7, maybe overnight, or for several hours at least, and maybe try the button presses referenced via the link at the top of this post, and see if you can coax life back into your Nexus 7. It does happen sometimes; a seemingly dead device will suddenly spring back to life, through a combination of serendipity and hitting on doing the right things, in the right order, and at the right time
Good luck, Gabu1405...
Rgrds,
Ged.

GedBlake said:
Take a look at this comprehensive listing of Nexus 7 button presses/interrupts. They may be of some use...
https://forum.xda-developers.com/showthread.php?p=37606945#post37606945
Hi, Gabu1405...
APX mode is never a good sign with the Nexus 7. It usually indicates that the bootloader has become corrupted, erased or overwritten (by something that is not a valid bootloader). When this occurs, the device is hardbricked and usually requires a motherboard replacement to resurrect the device, although there is a procedure called 'flatline', but this requires previously generated device unique 'blob' files, which you mention in your post.
Having said all of that though, nothing in your description should have caused the bootloader to have become 'damaged'. In order to erase, corrupt or overwrite the bootloader, your device would need to be bootloader unlocked in the first place, because a locked bootloader prohibits any unauthorised write access - bootloader locked devices can only be system 'modified' by official digitally signed updates from Google, which are flashed via the stock recovery.
Are you certain the Nexus 7 is showing as an APX device in Windows device manager?
What was the battery status/percentage when you attempted to unlock the bootloader? Maybe the tablet just needs a good charge, maybe for several hours!
You don't unlock the bootloader with ADB. Android Debug Bridge only works in fully booted Android and with the stock factory recovery. You need to use fastboot to unlock the bootloader, the command being fastboot oem unlock, whilst the device is in fastboot mode, which you boot into via the Volume Down+Power Button key press combo, as you mention in your post.
How it (may have) got into APX mode is certainly strange, because as I've said, this isn't something that normally happens spontaneously - when it happens, it's often due to people mistakenly flashing an incorrect .IMG file to the bootloader partition, causing the bootloader to be overwritten. A possible explanation is hardware failure, and that the emmc/NAND chip storage has developed a fault, and caused the bootloader to become corrupted. It's worth bearing in mind that the Nexus 7 is now seven years old, and with the best will in the world, these things don't last forever, unfortunately. Components fail and data corruptions occur.
If your Nexus 7 is truly in APX mode, for whatever reason, then I'm afraid it's likely hardbricked, and a motherboard replacement is the only realistic way of resurrecting it.
I can only suggest you try charging your Nexus 7, maybe overnight, or for several hours at least, and maybe try the button presses referenced via the link at the top of this post, and see if you can coax life back into your Nexus 7. It does happen sometimes; a seemingly dead device will suddenly spring back to life, through a combination of serendipity and hitting on doing the right things, in the right order, and at the right time
Good luck, Gabu1405...
Rgrds,
Ged.
Click to expand...
Click to collapse
Sorry, I expressed myself wrongly, I ran the same command as you said, it was fastboot oem unlock and it just said, "waiting for device..." then I tried fastboot oem unlock-go, also the same thing "waiting for device" so I just disconnected the tablet and restarted it and it was working pretty fine, then I connected to the PC and tried to enter fastboot mode manually, and this is when it shut down and never turned back on.
Also, my battery was at 70% at that time and yes, It's clearly on APX mode.
Well, thank you for your reply, now the only thing I got to do is recharge it and hope for the best.
Regards.

Gabu1405 said:
Sorry, I expressed myself wrongly, I ran the same command as you said, it was fastboot oem unlock and it just said, "waiting for device..." then I tried fastboot oem unlock-go, also the same thing "waiting for device" so I just disconnected the tablet and restarted it and it was working pretty fine, then I connected to the PC and tried to enter fastboot mode manually, and this is when it shut down and never turned back on.
Also, my battery was at 70% at that time and yes, It's clearly on APX mode.
Well, thank you for your reply, now the only thing I got to do is recharge it and hope for the best.
Regards.
Click to expand...
Click to collapse
Probably not much use until, or indeed if, you can get out of APX Mode... But the 'waiting for device' message is usually an indicator of a Windows driver problem - Windows is not able to communicate with the Nexus 7.
The way you'd normally do things is by first running the command fastboot devices
This command does nothing, except to confirm you have a viable fastboot connection, by displaying your Nexus 7's unique serial number in your Windows Command/DOS box. If this serial number fails to appear, you have a driver/connectivity problem and proceeding on to fastboot oem unlock would be pointless until the driver/connectivity problem is resolved.
Anyway, I hope charging the device helps. I'm still inclined to think that your device is recoverable - it would certainly be very unusual for the bootloader to be borked when it hasn't even been unlocked yet. In the seven years I've been a Nexus 7 owner, and being active on these forums for many of those years, I haven't encountered any reports by other XDA members where a locked bootloader has simply quit working... As I say, it'd be very unusual, but I suppose not wholly impossible.
Rgrds,
GB.

GedBlake said:
Probably not much use until, or indeed if, you can get out of APX Mode... But the 'waiting for device' message is usually an indicator of a Windows driver problem - Windows is not able to communicate with the Nexus 7.
The way you'd normally do things is by first running the command fastboot devices
This command does nothing, except to confirm you have a viable fastboot connection, by displaying your Nexus 7's unique serial number in your Windows Command/DOS box. If this serial number fails to appear, you have a driver/connectivity problem and proceeding on to fastboot oem unlock would be pointless until the driver/connectivity problem is resolved.
Anyway, I hope charging the device helps. I'm still inclined to think that your device is recoverable - it would certainly be very unusual for the bootloader to be borked when it hasn't even been unlocked yet. In the seven years I've been a Nexus 7 owner, and being active on these forums for many of those years, I haven't encountered any reports by other XDA members where a locked bootloader has simply quit working... As I say, it'd be very unusual, but I suppose not wholly impossible.
Rgrds,
GB.
Click to expand...
Click to collapse
Well, charged my device for a whole day, and now I tried to do the button combinations which you sent the link, nothing happened.
I thought that my battery could be unplugged or the cable was loose or something, so I opened the tablet and it was fine.
So, I just decided to do the button combinations while plugged into my PC, and I noticed that doesn´t matter which combination I try, the tablet disconnects from the PC and instantly reconnects, but still in APX mode.
I guess it is Game Over for me, gonna recharge it again, and try again tomorrow.
Thanks again.

Gabu1405 said:
Hello Guys, beforehand, sorry for bad formatting and some english mistakes.
Let me explain what happened.
I was trying to unlock my Nexus 7 bootloader, but I couldn´t get to the Fastboot mode via adb, so I decided to enter fastboot mode by pressing Power + Volume Down button, but I did this while my tablet was connected to the PC, and after that, it shut down and just don´t turned on anymore. (Never got to fastboot mode)
Now when I connect to windows it only show as an AXP Device and it disconnects and connects when i hold Power button, but never starts.
Also I want to note that.
I didn´t manage to get into fastboot mode.
I didn´t manage to unlock the bootloader.
Didn´t install any Custom Rom.
The device is technically 100% stock, so I don´t expect it to be a Hard Brick, but at the same time, I tried all the button combinations and it still wont turn on.
This happened to anyone? Do you guys have any idea what it could be? Any Sollutions for this?
Thank you.
(Edit: I don´t have the Blobs.bin file in case i need to use the Nvflash.)
Click to expand...
Click to collapse
Hi!
I had a Nexus 7 stuck in APX mode as well. Without the blobs saved you can't do anything. I tried a lot of thigs but nothing really helped. I ended up searching for an another N7 with a broken screen but with a working motherboard online. I was lucky and find one around $15. I swapped the boards and it was good to go.
Zsolti

Gabu1405 said:
Hello Guys, beforehand, sorry for bad formatting and some english mistakes.
Let me explain what happened.
I was trying to unlock my Nexus 7 bootloader, but I couldn´t get to the Fastboot mode via adb, so I decided to enter fastboot mode by pressing Power + Volume Down button, but I did this while my tablet was connected to the PC, and after that, it shut down and just don´t turned on anymore. (Never got to fastboot mode)
Now when I connect to windows it only show as an AXP Device and it disconnects and connects when i hold Power button, but never starts.
Also I want to note that.
I didn´t manage to get into fastboot mode.
I didn´t manage to unlock the bootloader.
Didn´t install any Custom Rom.
The device is technically 100% stock, so I don´t expect it to be a Hard Brick, but at the same time, I tried all the button combinations and it still wont turn on.
This happened to anyone? Do you guys have any idea what it could be? Any Sollutions for this?
Thank you.
(Edit: I don´t have the Blobs.bin file in case i need to use the Nvflash.)
Click to expand...
Click to collapse
Check out my guide.

Issues with Recovery Mode, Bootlooping, Flashing, EDL, and ADB Commands

Not sure how to title this forum post, but this is the best I got. Forgive my ignorance and lack of knowledge on these topics.
I was trying to root my Axon 7 mini. After some searching to find out how to unlock the bootloader (like needing JDK, older Android SDK version to run android.bat, etc.), I finally got it to work. Ran Recovery to "apply update from SD Card" (can not remember the file right now) and was then ready to load TWRP Recovery. When I rebooted to the recovery TWRP image, it told me something failed and the phone had to be factory reset. I took my SD card out in fear of my data being deleted and "accidentally" clicked the power button. It then reloaded with a password prompt where I typed some random password (1234 because I never set a pin password nor knew what to do here), clicked submit, and then gave me some error; now my phone doesn't work.
The Problem:
- I can enter bootloader, sometimes, but can only run fastboot commands; adb device does not detect phone so can't run adb commands (always says the server is old or something and reloads daemon successfully but never finds my device regardless). Also, I don't think I can get it to run in EDL mode; MiFlash gives out errors too when trying to flash recovery images.
- Recovery mode doesn't appear or work; not sure if the MiFavor command prompts on the phone is recovery or not, but it's safe to say this no longer appears. This is also where I believe the phone bootloops. I can get the fastboot commands to flash a TWRP recovery, but it never actually enters the TWRP dashboard.
- Can not turn off the phone... I think. None of the command options that appear on-phone shut it off; however, when the screen does stay black, I'm not sure if it's in EDL mode or plainly off.
- Device Manager shows the phone as different stuff (namely Kedacom USB Device and Portable Devices/MTB USB Device). Sometimes Qualcomm appears, but it depends. More often than not, when my device does appear, there's either an error code (like Code 10, Code 43) and/or the device is grayed out.
Conclusion:
I just want to get my phone to work normally again, if possible. Currently, I locked the oem to see if fastboot commands could still work and now I'm stuck at the ZTE logo, so can't try to unlock it right now. What are the proper tools, drivers, programs, etc I need to get this phone back to normal? I've scoured the web and these forums for 2 days now with no luck and lots of either missing info or obscure info.
I bought this at Best Buy, so I'm assuming it's US Axon7 Mini version in terms of drivers (not sure if the box specifies any info that could be useful here).

Un-brick Axon 7 Mini
Dear all,
I experienced the same issue with my phone after I tried to flash it with custom ROMs and recovery.
I thought I lost it as I was not able to enter adb mode (not recognized on the PC) or even not able to enter EDL mode with the button combination so not able to do anything with it.
Only watch it boot and display the ZTE logo.
After some research, here is what I had to do to get it recovered.
First thing you need to get is an EDL cable.
I let you search on your favorite site. Mine was a Generic eDL Deep Flash Qualcomm 9008 Cable 2 in 1 for Z3 X/Octopus.
Until you receive it, make sure you have the latest Qualcomm drivers installed on your PC.
You can find it easily.
Then, connect your phone and your PC with the EDL cable.
Press the button on your EDL cable (there should be one) for a few seconds and keep it pressed.
Then, press the power button and keep it pressed for at least 20 seconds.
At this stage, you should have both buttons pressed and after some time, you should feel the phone rebooting.
After 20 seconds, release the power button.
Then, after 10 other seconds, release the EDL cable button.
At this stage, your phone screen should stay black and your phone should appear in the device manager as Qualcomm USBHUB (or somehting similar)
You are in EDL mode and should be able to perform a recovery flashing using tuliptool.
Then I followed the steps I found here:
https://forum.xda-developers.com/axon-7-mini/how-to/updating-uk-version-zte-axon-7-mini-to-t3717933
If you are still stuck, pm me.
Be patient, all will be fine,

mariegalante55 said:
Dear all,
I experienced the same issue with my phone after I tried to flash it with custom ROMs and recovery.
I thought I lost it as I was not able to enter adb mode (not recognized on the PC) or even not able to enter EDL mode with the button combination so not able to do anything with it.
Only watch it boot and display the ZTE logo.
After some research, here is what I had to do to get it recovered.
First thing you need to get is an EDL cable.
I let you search on your favorite site. Mine was a Generic eDL Deep Flash Qualcomm 9008 Cable 2 in 1 for Z3 X/Octopus.
Until you receive it, make sure you have the latest Qualcomm drivers installed on your PC.
You can find it easily.
Then, connect your phone and your PC with the EDL cable.
Press the button on your EDL cable (there should be one) for a few seconds and keep it pressed.
Then, press the power button and keep it pressed for at least 20 seconds.
At this stage, you should have both buttons pressed and after some time, you should feel the phone rebooting.
After 20 seconds, release the power button.
Then, after 10 other seconds, release the EDL cable button.
At this stage, your phone screen should stay black and your phone should appear in the device manager as Qualcomm USBHUB (or somehting similar)
You are in EDL mode and should be able to perform a recovery flashing using tuliptool.
Then I followed the steps I found here:
https://forum.xda-developers.com/axon-7-mini/how-to/updating-uk-version-zte-axon-7-mini-to-t3717933
If you are still stuck, pm me.
Be patient, all will be fine,
Click to expand...
Click to collapse
I had a feeling an EDL cable was my only option left given everything I've looked up and the multiple methods I've tried. Wanted to avoid spending money on one but doesn't look like I have a choice given the circumstances - oh well. Regardless, thank you for the response and advice. Have to wait a while, though, to get the cable and test to see if this works.
If anyone else ever ends up in the same royally screwed situation as me, getting an EDL cable - or DIY one if you wanna be cheap and are confident enough to do so - is probably your saving grace.

Kuma21 said:
I had a feeling an EDL cable was my only option left given everything I've looked up and the multiple methods I've tried. Wanted to avoid spending money on one but doesn't look like I have a choice given the circumstances - oh well. Regardless, thank you for the response and advice. Have to wait a while, though, to get the cable and test to see if this works.
If anyone else ever ends up in the same royally screwed situation as me, getting an EDL cable - or DIY one if you wanna be cheap and are confident enough to do so - is probably your saving grace.
Click to expand...
Click to collapse
K, I can get tuliptool to work and run command, but i keep getting a "Failed: Unkown Error" response everytime i run a command. Can't unlock my bootloader, nor write a recovery disk due to this error. does anyone have any idea why this happens?

(Help) EDL Test Points needed or a solution on G6+

So, basically I will make this short as possible
Due to some problems I had to sell my G6 Plus (Brazilian -8 model) but it was on a custom rom, and did the most dumb thing that I could do: Reflashing pure stock and locking it, I've used the LMSA tool then relocked in Fastboot, the thing is some files were corrupt and when locked, it doesn't boot up anymore, as i still had hope for it, I tried to LSMA again, but it doesnt recognize anymore, as the lock flag is now "Flashing_Locked", flashing manually via Fastboot gives a error related to the lock flag (also LSMA resets the device, so using my unlock key asks to enable OEM Unlock at settings, a impossible thing when OS is broken) , then searched for some solutions, first it was booting a Boot.img file from the last stock, which was the flashed one, it bootloops, then tried something on the recovery that works, but is the stock one and pretty limited, so the logical thing to do is flashing a OTA file, but only works for old versions that requires one version before the target one, so its a no go. The last thing i tried to do is booting TWRP, but it gets stuck on a red warning that indicates that system is corrupt. Then the last hope was EDL Mode, and thats the point where i want to go, i've bought a EDL Cable that's basically a green and black wire thing used on most Qualcomm based Redmi/Xiaomi devices, but it automatically boots to fastboot, so I need help to get EDL Test Points for this device, im with access to the board, i just need the right Pads to short-circuit it and blankflash it, so i can finally get it to work like normal again.
Schematics (for people who understands): https://androidfilehost.com/?fid=4349826312261726244
Any help is important, I'm sorry for some typos, english isnt my main language considering i didnt use translate
and please don't come with instructions like "have you tried LSMA?, try booting up the device and select oem unlock" because its clear that it doesnt work.

I bricked my Oneplus 6t from tmobile and would like to unbrick it if possible.

So I finally rooted my Oneplus 6t from t mobile. I bought the phone from swappa and it worked great. I installed a random rom and it bricked my phone.
I assume it is a soft brick since i can access adb mode but it requires me to power off the phone
and hold the volume keys along with the power button. Otherwise the phone will just boot up and
will be sutck in a continous boot loop. I then tried to fic this issue by using an msm tool found in
the xda fourms. I then entered recovery mode and perfomed a "wipe data/factory reset. I think it hurt more than it helped. Any suggestions on how to unbrick my phone?
I tried using alll three msm tools in this fourm.
when i use the msm tool (MSMDownloadTool 9.0v2) the update just stops after 4 secounds.
Also the update would fail if i were to use the msm tool (MSMDownloadTool 9.0v1 and MSMDownloadTool 9.0.13)
I have tried reinstalling the qualcom drivers but no luck.
I tried deleting the drivers and allowing windows to detect the phone nad download its own usb drivers
but it did not help.
i apologize if i post this in the wrong section. I am new here.
all links and info i followed to attemp to unbrick my phone can be found in this fourm
[TOOL] T-Mobile OnePlus 6T MSMDownloadTool [Firmware 9.0.13] [8/9]
Okay folks, took forever to find, but we finally have it, the T-Mobile OnePlus 6T MSMDownloadTool, your brick savior, bootloader relocker, among other things, I will include a basic faq at the end. Requirements: 1. Windows PC 2. OnePlus 6T -...
forum.xda-developers.com

falzer2007 said:
when i use the msm tool (MSMDownloadTool 9.0v2) the update just stops after 4 secounds.
Click to expand...
Click to collapse
that's not very descriptive, produce the error and share results here

dmtec said:
that's not very descriptive, produce the error and share results here
Click to expand...
Click to collapse
Okay so I open the msm tool. Then I have my oneplus 6t (t mobile) turned off. I hold both volume buttons and keep holding them while I connect the USB cable to the phone. Its basically in edl mode at this point. Then I press the start option on the msm tool. The bar fills up with green and completes itself. However a number appears that saids "4s" inside of the square. I assume that means 4 seconds left or completed in 4 seconds. My phone is still in edl mode at this time and will not boot up in any menu (normal.menu, boot menu/recovery mode). Unlesss I boot it manually.
And yes I tried a scenario where I held down both volume buttons, connected USB cord, and then let go. I also tried the scenario where I held both volume buttons, connected usb cord and kept holding the volume buttons until the process completed itself but I would get the same result. "4s"

dmtec said:
that's not very descriptive, produce the error and share results here
Click to expand...
Click to collapse

falzer2007 said:
So I finally rooted my Oneplus 6t from t mobile. I bought the phone from swappa and it worked great. I installed a random rom and it bricked my phone.
I assume it is a soft brick since i can access adb mode but it requires me to power off the phone
and hold the volume keys along with the power button. Otherwise the phone will just boot up and
will be sutck in a continous boot loop. I then tried to fic this issue by using an msm tool found in
the xda fourms. I then entered recovery mode and perfomed a "wipe data/factory reset. I think it hurt more than it helped. Any suggestions on how to unbrick my phone?
I tried using alll three msm tools in this fourm.
when i use the msm tool (MSMDownloadTool 9.0v2) the update just stops after 4 secounds.
Also the update would fail if i were to use the msm tool (MSMDownloadTool 9.0v1 and MSMDownloadTool 9.0.13)
I have tried reinstalling the qualcom drivers but no luck.
I tried deleting the drivers and allowing windows to detect the phone nad download its own usb drivers
but it did not help.
i apologize if i post this in the wrong section. I am new here.
all links and info i followed to attemp to unbrick my phone can be found in this fourm
[TOOL] T-Mobile OnePlus 6T MSMDownloadTool [Firmware 9.0.13] [8/9]
Okay folks, took forever to find, but we finally have it, the T-Mobile OnePlus 6T MSMDownloadTool, your brick savior, bootloader relocker, among other things, I will include a basic faq at the end. Requirements: 1. Windows PC 2. OnePlus 6T -...
forum.xda-developers.com
Click to expand...
Click to collapse
Hi, Falzer. had all but given up and was prepared to head to T-Mobile to buy the 1+ 9 Pro (I almost wish I did not fix my phone... *BUT* I DID!
My issue occurred trying to flash a Magisk patched boot.img to my newly unlocked bootloader phone. I was following an article that alleged one could root the phone without TWRP. I will say this TWRP is your friend; don't dis "him". By the way, unlocking my phone wiped my data so always important to read the whole article first as it was mentioned in the NEXT step.
[Should be including the actual error here - it is found throughout these forums but I cannot recall the exact display. Basically, if you have an unlocked bootloader and then get to the CrashDump screen, follow from here:]
Retrieve the file, boot11.1.1.1.img and download from this thread/link:
OOS stable boot image and patched magisk boot image both for 11.1.1.1.
Leaving this here as i ended up boot looping from installing custom kernel, and it being a new release i was pulling my hair trying to figure this out. Flashed through fastboot with "fastboot flash boot_a XX.img, fastboot flash boot_b XX.img"...
forum.xda-developers.com
Do *NOT* mess with the other file to the right.
Hold all 3 buttons (2 volume buttons + power) and once/if you see Fastboot Mode, release the buttons.
Have ADB installed (you should be able to find plenty of directions for doing this).
From either PowerShell (or *maybe* CMD Prompt started as Administrator as I had been using this "successfully" for most functions):
fastboot devices
fastboot flash boot boot11.1.1.1.img
fastboot reboot
I could not believe my phone ACTUALLY booted (even with the McLaren animation intact; I'm sure one of the gurus here knows why) after all the failed attempts fooling around with MSM Download Tool [4.0] which almost EVERYONE swears by fixes/restores any brick. I understand ON ONE is forcing anyone to use any specific resolution; I am just trying to provide another last ditch effort.
EDIT/Caveat: I did not even check to see how old that thread above is, I believe late September and I had actually taken updates [via TMobile??] until the last one with a week to 10 days *but* that was probably wiped with the boot unlock so I do not know which "update" I got but figured I didn't have much to lose as I already had a "bad" version of a boot.img flashed anyway. Anyone with any technical explanations, feel free to comment. Thanks!

Just another victim of the android 12 update, hoping for a revival

So im gonna start off by saying that im just some dumb 18 year old and have never actually posted to ask for help, only reading other peoples situations to try to figure out my own.
but introductions aside im just gonna jump in to everything wrong with my oneplus 8 pro (global)
I was on the OOS 12 beta for a while, ive been way too lazy to change it back since ive been occupied by other stuff.
I was using magisk and decided to do some fun shenanigans with it.
I get into bootloop after flying to close to the sun with modules - a common occurrence.
so I try to switch to a custom rom since I was gonna reset anyway.
I download CR droid's recovery and main rom, went into fastboot and flashed the recovery.
I notced that whenever my phone was plugged into the computer, the options would rapidly switch on fastboot's end
when I tried to boot to recovery after flashing, it would only return to fastboot
confused I thought that maybe the recovery was bad and try another rom, no dice
i submit defeat and go to msm tool to fix the issues
I get that "Sahara communication failed" error so I hold down the volume up + power for 13 seconds before trying again.
it flashed smoothly
after getting sad at all the bloatware that was on oxygen OS after a full reset, I get the motivation to try using a custom rom again, this time using a different rom.
same weird fastboot behavior
I was unable to go into recovery
I then tried downloading stock firmware to flash it manually
fixed nothing
I delete the boot and recovery partitions and flash them again, still no dice
I even make a partion called fart, before remembering that I do not know the partition structure of android so i Ctrl+C out before it makes the partition
I go back to msm tool again in shame
"Unknown Target Device"
I reinstalled drivers
switched computers and cables
changed the source of my drivers
nothing fixed this error
and every time I would try to do anything it would go directly back to fastboot.
I try reflashing partitions in this broken fastboot mode and it would only flash if I unplugged, selected reboot bootloader, and plugged it back in
I would then try to fastboot boot into TWRP or other recoveries i downloaded
they would shut off the phone
I remember a/b partitions exist so I switch over between them and try to flash stock OOS again
after more fiddling and nothing working, I noticed some more weird traits of fastboot
twrp did boot directly after switching my main slot, not specific which one just if the slot was changed.
the "this device has an unlooked bootloader" message did not appear
only on slot a would the oneplus logo show up on boot
again every option I would click would take me right back to fastboot.
I wait a day for the phone to die so I could use EDL that way, at this point the twrp method randomly stopped working so I couldn't go into edl that way.
"Unknown Target Device Param Preload"
and like I know Param Preload is a common error but nowhere could I find information on the unknown target device part.
the phone still vibrates if I hold the power and vol+
it just vibrates in a loop as if it keeps rebooting, probably fastboot just selecting the start key over and over when I hold it down.
vol- and power do nothing, and did nothing for the entirety of this story.
is there any chance of saving my poor instantnoodle professional?
## edit for people googling this
the problem I was having was that I didn't set the "target" button on the MSM tool correctly, so make sure its set to O2 or your appropriate reigon

1. Stop fastboot flashing with A12 or if you are on A12.
2. Read this: https://forum.xda-developers.com/t/...ro-8t-9r-with-oxygenos-12-coloros-12.4426167/
3. Rescue your phone using this: https://forum.xda-developers.com/t/...l-to-restore-your-device-to-oxygenos.4084953/
4. Stay on OOS11 (Most custom roms INCLUDING A12 custom roms require OOS11 anyway.)
5. There is not much bloat on a OOS11 rom IMO but you can always use a debloater.

xtcislove said:
1. Stop fastboot flashing with A12 or if you are on A12.
2. Read this: https://forum.xda-developers.com/t/...ro-8t-9r-with-oxygenos-12-coloros-12.4426167/
3. Rescue your phone using this: https://forum.xda-developers.com/t/...l-to-restore-your-device-to-oxygenos.4084953/
4. Stay on OOS11 (Most custom roms INCLUDING A12 custom roms require OOS11 anyway.)
5. There is not much bloat on a OOS11 rom IMO but you can always use a debloater.
Click to expand...
Click to collapse
Maybe I should clear on what i have tried. since I have read both articles before I made this post (i scanned through them again once you sent them tho)
Ive tried...
The unbricking Msm qualcomm 9008 tool
ive used it a ton in the past
ive switched copmputers, cables, and the qualcomm driver, as well as reset the phone several times
also yeah im not touching oos12 after this with a 9 foot pole, but is there a way of knowing wether I can save it or if its too late and the motherboard has been fried.

NatunaSushi said:
Maybe I should clear on what i have tried. since I have read both articles before I made this post (i scanned through them again once you sent them tho)
Ive tried...
The unbricking Msm qualcomm 9008 tool
ive used it a ton in the past
ive switched copmputers, cables, and the qualcomm driver, as well as reset the phone several times
also yeah im not touching oos12 after this with a 9 foot pole, but is there a way of knowing wether I can save it or if its too late and the motherboard has been fried.
Click to expand...
Click to collapse
Okay i guess this is another situation here. You are not bricked like the other peoplke as far as i can see because there devices are completly bricked. No connection to pc or vibrating at all.
Since you used MSM tool before it should work IMO. Does your pc regonize the phone? Did you tried to switch usb ports? Did you tried other versions of msm tool(eu, older verions, etc)?
Please make sure to follow all MSM instructions closely.

xtcislove said:
Okay i guess this is another situation here. You are not bricked like the other peoplke as far as i can see because there devices are completly bricked. No connection to pc or vibrating at all.
Since you used MSM tool before it should work IMO. Does your pc regonize the phone? Did you tried to switch usb ports? Did you tried other versions of msm tool(eu, older verions, etc)?
Please make sure to follow all MSM instructions closely.
Click to expand...
Click to collapse
after a week of fiddling I DID figure out the issue
unsupported Target unknown was refering to the fact that I had the MSM tool set to Target mode, which I assume tries to set the region according to what the current device has. After selecting that to O2 for the global models, the flash worked fine. I ended up coming across some C stock of a google pixel 3a and will try messing with that so I dont have to go a while without calls or texts. Glad to know I learned some bit of responsibility from this excursion.