The phone battery was about 25%. I decided to do ota update. The phone was connected and charged by laptop. The process was successful. But when I selected and pressed restart to bootloader, the screen went black. The charger could not power it on, could not charge too (the phone was not hot). What happened to my phone, guys. Is there anyway to revive it? Sound was played when it connected to PC. But no device was showed.
Thankssssss
has anyone got the ramload and bootloader single image for X Style
What is the state of your phone?
Give us more info if you want any help. @mr_5kool
If your device powered off during the bootloader flash and all you get now is Qualcomm QDLoader... it's done, there is no blankflash file or other recovery method if you cannot get to fastboot. Sorry.
The pc now only shows hs-usb qdloader9008
@@
Bootloader dead
I need files to blankflash bootloader
Is there anyway to create 8992.mbn for X Style
mr_5kool said:
The phone battery was about 25%. I decided to do ota update. The phone was connected and charged by laptop. The process was successful. But when I selected and pressed restart to bootloader, the screen went black. The charger could not power it on, could not charge too (the phone was not hot). What happened to my phone, guys. Is there anyway to revive it? Sound was played when it connected to PC. But no device was showed.
Thankssssss
Click to expand...
Click to collapse
Sorry, don't know how to help with this device when it's in QDLoader 9008 mode, haven't seen blankflash for the XT157x.
Were you running stock 7.0 bootloader then downgrade and take a 6.0 OTA to brick the bootloader? Just curious.
Hope someone can help.
mr_5kool said:
The pc now only shows hs-usb qdloader9008
@@
Bootloader dead
I need files to blankflash bootloader
Click to expand...
Click to collapse
mr_5kool said:
Is there anyway to create 8992.mbn for X Style
Click to expand...
Click to collapse
No... Moto does not does not provide those files and all attempts to create or use a different one have failed.
Sorry, but it's just a brick now.
there's no way you can fix your phone now.. email motorola regarding this issue they might ask you to send your phone to some shop or service center
(if your country has one) and they might fix your phone.. but no guarantee about that also
you'll have to spend a lot for this fix..
Related
I just tried to restore stock image with fastboot mode, but somethings wrong and now my phone is dead.
No boot, no vibrate, no bootloader, only the black screen and nothing appears.
And qhsusb_bulk device is detected when I connected phone to my computer.
I tried fastboot and adb sideload but it didn't work. How can I restore my phone?
Please help me fix this! :crying::crying:
pi.zero said:
I just tried to restore stock image with fastboot mode, but somethings wrong and now my phone is dead.
No boot, no vibrate, no bootloader, only the black screen and nothing appears.
And qhsusb_bulk device is detected when I connected phone to my computer.
I tried fastboot and adb sideload but it didn't work. How can I restore my phone?
Please help me fix this! :crying::crying:
Click to expand...
Click to collapse
No known way except JTAG service, although I can't recall a Moto X Pure/Style being done successfully... Otherwise contact Moto Customer Care or take it to a service center.
Unfortunately, on these devices a hard-brick is exactly that, bricked.
i have a unit same problem hard bricked
No solution yet
pi.zero said:
I just tried to restore stock image with fastboot mode, but somethings wrong and now my phone is dead.
No boot, no vibrate, no bootloader, only the black screen and nothing appears.
And qhsusb_bulk device is detected when I connected phone to my computer.
I tried fastboot and adb sideload but it didn't work. How can I restore my phone?
Please help me fix this! :crying::crying:
Click to expand...
Click to collapse
were you able to resolve your issue?
Welp... looks like I joined this club. I downgraded to sept security patch without an issue but when upgrading to december.... I get this.
@gokart2 I know this is a long shot but I'll ask anyway haha. Seeing that you've done a ton of help and support on this device and mind you, I will be the guinea pig in this whole process whether it borks the phone even more or not. Do you think you can attempt to modify this process with Moto X Pure's bootloader and I will attempt to run it? If not, no biggie.
https://forum.xda-developers.com/moto-x/general/how-to-resurrecting-bricked-moto-x-t2629057
Ended up going through moto repair and had them send me a new XT1575 for 75 bucks. Thanks anyway... no more messing with downgrading boot loaders anytime soon.
Doubt I could have done much good. New phone for $75 isn't too bad though.
Hullo,
I succesfully installed Lineage with no problems in the OS, but was unable to access TWRP as it asked for a decryption pattern that didn't seem to match the pattern I set on my phone. I then tried a password in the OS but this also didn't work in TWRP.
After checking the thread again, I found Unjustified had recommended the TWRP found in his bootloader, which I then downloaded and proceeded to install via fastboot. The installation appeared to go smoothly but after that I was unable to turn on my phone.
After pressing the power button I am presented with either the battery icon or the ZTE logo, which disspears after a few seconds followed by three flashing red lights. The last flashing light seems to be cut off part way.
I thought this might be a dead battery but even after charging for an extended period of time the result is the same.
Any help would be very much appreciated!
mvortex3710 said:
Hullo,
I succesfully installed Lineage with no problems in the OS, but was unable to access TWRP as it asked for a decryption pattern that didn't seem to match the pattern I set on my phone. I then tried a password in the OS but this also didn't work in TWRP.
After checking the thread again, I found Unjustified had recommended the TWRP found in his bootloader, which I then downloaded and proceeded to install via fastboot. The installation appeared to go smoothly but after that I was unable to turn on my phone.
After pressing the power button I am presented with either the battery icon or the Axon logo, which disspears after a few seconds followed by three flashing red lights. The last flashing light seems to be cut off part way.
I thought this might be a dead battery but even after charging for an extended period of time the result is the same.
Any help would be very much appreciated!
Click to expand...
Click to collapse
Your phone doesn't seem to be bricked at all.
That was a known issue many G users encountered...
Just boot into TWRP by pressing Power and volume + or choosing it from the bootloader warning screen and reflash the universal B15 N bootloader.
Reboot your phone and from now on it should boot every N rom just fine :fingers-crossed:
Good luck,
Martin
mischa_martin said:
Your phone doesn't seem to be bricked at all.
That was a known issue many G users encountered...
Just boot into TWRP by pressing Power and volume + or choosing it from the bootloader warning screen and reflash the universal B15 N bootloader.
Reboot your phone and from now on it should boot every N rom just fine :fingers-crossed:
Good luck,
Martin
Click to expand...
Click to collapse
I'm glad to hear it is quite common, but I should mention that the three lights persist when I try to load TWRP... I can only get as far as the ZTE logo.
The bootloader warning also hasn't shown since I attempted to flash TWRP as the phone appears to cut off after showing ZTE.
I will try an overnight charge in case the battery is completely empty and somehow slow charging. But any other suggestions are most welcome.
Kind regards,
James
mvortex3710 said:
I'm glad to hear it is quite common, but I should mention that the three lights persist when I try to load TWRP... I can only get as far as the ZTE logo.
The bootloader warning also hasn't shown since I attempted to flash TWRP as the phone appears to cut off after showing ZTE.
I will try an overnight charge in case the battery is completely empty and somehow slow charging. But any other suggestions are most welcome.
Kind regards,
James
Click to expand...
Click to collapse
You should try some button combinations like
Power + volume down
Power + volume down + volume up
And see how the device reacts
It helps connecting the device to a PC to look up in device manager to determine the mode its booted in
mischa_martin said:
You should try some button combinations like
Power + volume down
Power + volume down + volume up
And see how the device reacts
It helps connecting the device to a PC to look up in device manager to determine the mode its booted in
Click to expand...
Click to collapse
Thanks for the continued help.
I was just trying to connect it to the PC and appear to have made some headway, it started off showing up as qusb_bulk, but after repeatedly deleting that driver I returned to Qualcomm HS-USB QDLoader 9008 (COM6).
As I understand axon7root *should be able to write to the device at this point.
Does this device name give any indication as to the problem?
I wonder if miflash could be used on a G model to unbrick it. I'm happy to restart from stock files.
mvortex3710 said:
Thanks for the continued help.
I was just trying to connect it to the PC and appear to have made some headway, it started off showing up as qusb_bulk, but after repeatedly deleting that driver I returned to Qualcomm HS-USB QDLoader 9008 (COM6).
As I understand axon7root *should be able to write to the device at this point.
Does this device name give any indication as to the problem?
I wonder if miflash could be used on a G model to unbrick it. I'm happy to restart from stock files.
Click to expand...
Click to collapse
As you are in EDL now you have some options.
First I would try to flash a recovery and boot image that is proven to be working fine e.g official twrp https://forum.xda-developers.com/axon-7/development/recovery-official-twrp-zte-axon-7-t3515715 or some A2017G stock boot.img
If that doesn't help you could get in contact with @jcadduono to be a tester for that miflash method. (As your device is already pretty badly bricked)
I don't exactly know how EDL flashing works if it depends on a exact GPT table or not.
But I can say that I flashed every single part of the A2017U bootloader except for NON-HLOS (modem) on my A2017G for each B29 and B15 and it worked just fine. So maybe we just have to exchange the modem file in the EDL package :silly:
If you don't want to take that risk you also could try sending it back to ZTE and hope they don't check the bootloader :fingers-crossed:
(Just a thought: Maybe if the EDL package won't work on your device it will be so heavily damaged ZTE can't check for bootloader unlock and accept it as a warranty case, but don't take that too seriously )
Regards,
Martin
mvortex3710 said:
Thanks for the continued help.
I was just trying to connect it to the PC and appear to have made some headway, it started off showing up as qusb_bulk, but after repeatedly deleting that driver I returned to Qualcomm HS-USB QDLoader 9008 (COM6).
As I understand axon7root *should be able to write to the device at this point.
Does this device name give any indication as to the problem?
I wonder if miflash could be used on a G model to unbrick it. I'm happy to restart from stock files.
Click to expand...
Click to collapse
If you are not afraid then try to use my package for A2017G with MiFlash: https://mega.nz/#!88BjXKhA!TnVSobBw5PkmShSqZ-Ni8MCCbnhJP2SWRNvvXqYHSjc
I really appreciate all this advice!
Looks like the MiFlash is promising. I was able to load the phone into MiFlash from the [EDL] thread. I have just tried the A2017G package provided by djkuz and will report back with any updates.
Just got to the mifavor screen, charging the battery from empty, although quickcharge appears to be functional again.
The charging battery logo is different from before so appears that this bootstack has done the trick.
The flashing red light has gone now, appears to be loading Lineage as before! I'm so grateful for all this help
However, now the unlock pattern is coming up as 'wrong pattern'. Is there anything that can be done? My settings appear to be saved as before (wallpaper and quick settings are the same).
I will attempt to reinstall twrp recovery and fix the lockscreen over adb. Thanks very much for the help. The brick has gone!!
Hi there, I've been browsing through the threads related to unbricking of the Nexus 6P stuck in qualcomm hs-usb qdloader 9008 mode, really desperate to get my device working again if even possible however I've tried for about four days now different ways and files and I've had no luck.
My bootloader is locked and no ADB etc managed to get my device showing as the 9008 port so I think it's stuck in EDL.
Following guides, this is the furthest I've yet to get (In screenshot)
Could anyone shed some light and some assistance please? what am I doing wrong!?
attempted to apply for heat some to the device then re flash ?
blackcell1 said:
attempted to apply for heat to the device then re flash ?
Click to expand...
Click to collapse
Sorry, I don't quite understand what you mean?
Clarkeofcurtis said:
Sorry, I don't quite understand what you mean?
Click to expand...
Click to collapse
Use a hairdryer to warm up the back of the phone.
Are you pulling my leg? Warm it up then reflash?
nah im not trying to make you destroy your phone, being rather serious with this method. i use it on a daily basis to solve phones that fail during restoring factory images. i wouldn't know how long to give it with a hair dryer as i have access to a heat gun/heat mats .
just think of it as a cheap mans re balling method
blackcell1 said:
nah im not trying to make you destroy your phone, being rather serious with this method. i use it on a daily basis to solve phones that fail during restoring factory images. i wouldn't know how long to give it with a hair dryer as i have access to a heat gun/heat mats .
just think of it as a cheap mans re balling method
Click to expand...
Click to collapse
Sorry haha, I'm a noob with most of this android stuff bar rooting and flashing a few devices prior! I shall give it a go now and get back to you - thank you for the advice
Clarkeofcurtis said:
Sorry haha, I'm a noob with most of this android stuff bar rooting and flashing a few devices prior! I shall give it a go now and get back to you - thank you for the advice
Click to expand...
Click to collapse
good luck, id give it a good couple of minutes on the highest setting, just so its a little hot to the touch. and attempt the flashing of the files when its still hot/warm.
blackcell1 said:
good luck, id give it a good couple of minutes on the highest setting, just so its a little hot to the touch. and attempt the flashing of the files when its still hot/warm.
Click to expand...
Click to collapse
thank you so much that worked, it has said flash successful, first time I got a google logo but now nothing, what would be my next step please?
if the bootloader is unlocked then you can directly flash the firmware. but if its not google "nexus ota" and then on your phone jump into the recovery and check the firmware model number and download the same ota and adb sideload it.
im not 100% sure on the next step as I've never had a nexus 6p with a dead bootloader. but thats what id do.
---------- Post added at 04:50 PM ---------- Previous post was at 04:49 PM ----------
but from my personal experience with having to heat a phone up to restore factory images, it kinda means the phone is nearing the end of its life and id start thinking about buying your next phone before it sh*ts the bed.
blackcell1 said:
if the bootloader is unlocked then you can directly flash the firmware. but if its not google "nexus ota" and then on your phone jump into the recovery and check the firmware model number and download the same ota and adb sideload it.
im not 100% sure on the next step as I've never had a nexus 6p with a dead bootloader. but thats what id do.
Click to expand...
Click to collapse
Thank you for the reply and continuing to help, after seeing the google logo just once I'm getting nothing again - I'm even more determined now though as It's been dead for 2 months so this is the furthest I've gotten - the application of heat is what did it for me and fixed the error I was getting, can't get into recovery now though holding power + down etc
Clarkeofcurtis said:
Thank you for the reply and continuing to help, after seeing the google logo just once I'm getting nothing again - I'm even more determined now though as It's been dead for 2 months so this is the furthest I've gotten - the application of heat is what did it for me and fixed the error I was getting, can't get into recovery now though holding power + down etc
Click to expand...
Click to collapse
yeah can you access the bootloader at all ? does it say that the bootloader is locked ? from trying to restore LG's it sometimes has to be re heated a few times, but yeah if you need to re heat it to get further into the phone then its pretty much a lost cause. the only reason i do it is to remove the data so we can resell the device.
blackcell1 said:
yeah can you access the bootloader at all ? does it say that the bootloader is locked ? from trying to restore LG's it sometimes has to be re heated a few times, but yeah if you need to re heat it to get further into the phone then its pretty much a lost cause. the only reason i do it is to remove the data so we can resell the device.
Click to expand...
Click to collapse
I can get into the andriod screen where you can select recovery and such, with the BL, Baseband product variation and such, where should I go from here?
Oh right, so even once restored to firmware, will it be useless do you think if I can even manage to?
Clarkeofcurtis said:
I can get into the andriod screen where you can select recovery and such, with the BL, Baseband product variation and such, where should I go from here?
Oh right, so even once restored to firmware, will it be useless do you think if I can even manage to?
Click to expand...
Click to collapse
Sorry if you can't access the recovery from the bootloader and its in locked state then your a member of the lovely group of BLOD (bootloader of death) if you hit recovery does it show a little android logo and sit there?
Sorry for the late reply
blackcell1 said:
Sorry if you can't access the recovery from the bootloader and its in locked state then your a member of the lovely group of BLOD (bootloader of death) if you hit recovery does it show a little android logo and sit there?
Sorry for the late reply
Click to expand...
Click to collapse
I believe so, I can just about get into the bootloader at the best of times and when I do I can select options but once proceeding to start said mode phone freezes so can't get into recovery mode :/
Thank you for your continuous help, only way i can get it into bootloader is by heating it up so does that mean for the device to ever work It'll need heat every time? looking like a spares and repairs listing on ebay
Clarkeofcurtis said:
I believe so, I can just about get into the bootloader at the best of times and when I do I can select options but once proceeding to start said mode phone freezes so can't get into recovery mode :/
Thank you for your continuous help, only way i can get it into bootloader is by heating it up so does that mean for the device to ever work It'll need heat every time? looking like a spares and repairs listing on ebay
Click to expand...
Click to collapse
Hello....
How did you manage to get in to EDL mode..? I'm really curious. With stock bootloader? Since you can't access recovery
Also what is exactly displayed in Windows device manager?
You are using an outdated QFil version... It is from 2014 àr 2015.
Do a google search with: QPST_2.7.453.0 . This version seem to be from 2016.
Use the first link from the result. I analysed the files with virustotal, those seem clean or malware...
Also when plugging your usb cord to your PC, does your phone vibrate? Or does the LED blink in red?
You may have to press power button when plugging the usb cord or press power button for a certain amount of time before you plug the usb cord. I'm not completly sure, but your phone may not be in the "proper" EDL state to accept the QFil flash.
Good luck... :good:
Is it possible to send me the guide you used? Thanks.
Clarkeofcurtis said:
Hi there, I've been browsing through the threads related to unbricking of the Nexus 6P stuck in qualcomm hs-usb qdloader 9008 mode, really desperate to get my device working again if even possible however I've tried for about four days now different ways and files and I've had no luck.
My bootloader is locked and no ADB etc managed to get my device showing as the 9008 port so I think it's stuck in EDL.
Following guides, this is the furthest I've yet to get (In screenshot)
Could anyone shed some light and some assistance please? what am I doing wrong!?
Click to expand...
Click to collapse
Hey there sorry for slow replies, will be back on my desktop in an hour I'll send you links for what I followed and such, I think the only reason my device was in EDL mode was due to a hardware fault? As my device is faulty indefinitely as I had to use a hairdryer to warm it up while flashing this then allowed it to enter firehose state which a lot of people seem to error with - after all my attempts and research I'm to velieve there's a fault with the phone itself the only way I could get it to even power up was applying heat to it after removing the back panel
As blackcell said deballing or something? Worked a treat!
Furthest I've managed to get now is into my boot loader however everything is locked - when I press enter recovery my handset just freezes ?
5.1 said:
Hello....
How did you manage to get in to EDL mode..? I'm really curious. With stock bootloader? Since you can't access recovery
Also what is exactly displayed in Windows device manager?
You are using an outdated QFil version... It is from 2014 àr 2015.
Do a google search with: QPST_2.7.453.0 . This version seem to be from 2016.
Use the first link from the result. I analysed the files with virustotal, those seem clean or malware...
Also when plugging your usb cord to your PC, does your phone vibrate? Or does the LED blink in red?
You may have to press power button when plugging the usb cord or press power button for a certain amount of time before you plug the usb cord. I'm not completly sure, but your phone may not be in the "proper" EDL state to accept the QFil flash.
Good luck... :good:
Click to expand...
Click to collapse
Thanks pal if you check last post I wrote about my EDL mode forgot to tag you my apologies, as for my LED I've never seen that light up since I bricked it, even when google logo came up etc and while in the boot loader
Clarkeofcurtis said:
Thanks pal if you check last post I wrote about my EDL mode forgot to tag you my apologies, as for my LED I've never seen that light up since I bricked it, even when google logo came up etc and while in the boot loader
Click to expand...
Click to collapse
Light usually a red LED blink while in proper EDL state as far as I know. Could be something else on the N6P. Well, it looks like you are SOL. Sorry, I don't know what else to say, since you exhausted all possibilities...
Good luck...
Hi,
During an android update (by OTA) my phone turnend off. Power button + volume down don't turn on the bootloader (nothing happens, I can only see a blackscreen).
Commands ADB and Fastboot don't work. Computer shows only a saying "Didnt recognized the USB device" or sometimes "Qualcomm HS-USB QDLoader 9008".
In the past the phone had TWRP and a lot of custom ROM's but I went back to stock.
Is it possible to flash it with PC? (With some kind of aplication like "smart phone flash tool")
Best regards!
You can't do anything. You lost your device. But if you find any solution then tell me.
bump
hubert987 said:
bump
Click to expand...
Click to collapse
You hard-bricked your device by Installing official OTA update in your unlocked device. This thing has happened to a lot of us unknowingly or by mistake. I did the same thing by mistake, I forgot about having an unlocked BL and flashed an official OTA update.
We basically fcuked up the bootloader/Fastboot I think and Motorola won't publish the required files to reflash it using Qfil.
My M3 was working perfectly. I put it to restart and then it didn't turn on anymore. It is now only recognized as "Qualcomm HS-USB QDLoader 9008" on Windows. I opened the phone and with some magical combination (remove/connect flat cables from the battery and display, connect the USB cable, press volume keys and short the test points) it started in fastboot. So I was able to flash the "fastboot ROM". Unfortunately, on the next boot it still does not turn on normally. Has anyone succeeded in repairing the Poco M3? In Mi Flash is requested an authenticated account to flash through it, is it worth paying someone to provide the account? Does anyone have the contact of someone who makes cheap? Any help is welcome, thank you!
me too
waiting, someone pls
LeandroFarias said:
waiting, someone pls
Click to expand...
Click to collapse
I kind of managed to get my Poco M3 to start on Android (but it's not fully fixed).
That is the points
vinod3362 said:
That is the points
Click to expand...
Click to collapse
What?
me too. after i reboot my poco m3. it came to black and wont boot up. i google everything, the only need to flash is to modified the firehose. badly needed.
KaMyKaSii said:
My M3 was working perfectly. I put it to restart and then it didn't turn on anymore. It is now only recognized as "Qualcomm HS-USB QDLoader 9008" on Windows. I opened the phone and with some magical combination (remove/connect flat cables from the battery and display, connect the USB cable, press volume keys and short the test points) it started in fastboot. So I was able to flash the "fastboot ROM". Unfortunately, on the next boot it still does not turn on normally. Has anyone succeeded in repairing the Poco M3? In Mi Flash is requested an authenticated account to flash through it, is it worth paying someone to provide the account? Does anyone have the contact of someone who makes cheap? Any help is welcome, thank you!
Click to expand...
Click to collapse
how do you get into fastboot?? i tried mine but it wont boot in fastboot. i'm stuck in QDLoader.
did someone successfully recover their bricked poco m3 ?
gasleak08 said:
did someone successfully recover their bricked poco m3 ?
Click to expand...
Click to collapse
nothing yet. we need firehose to bypass miflash authentication. or drain the battery then press vol down + power for 10secs.
KaMyKaSii said:
I kind of managed to get my Poco M3 to start on Android (but it's not fully fixed). Are you Brazilian too? Call me on telegram
Matheus
You can contact @MatheusCoelho1998 right away.
t.me
Click to expand...
Click to collapse
can u tell me how?mine too?
my phone has bricked with UBL condition and i flash whole partition with twrp and magisk to solve the heating problem now its alive again
I just wait till the battery totally discharge and then plug in the charger,sofar been through this problem for 2x,the first one for 2 days and 5 days for later because the battery was full.
This happens when Im restarting the device and now even there is a new update,Im still scare to update my device to the latest firmware incase it wont boot again.
Should I try to update or nah,guys?
Minoda86 said:
I just wait till the battery totally discharge and then plug in the charger,sofar been through this problem for 2x,the first one for 2 days and 5 days for later because the battery was full.
This happens when Im restarting the device and now even there is a new update,Im still scare to update my device to the latest firmware incase it wont boot again.
Should I try to update or nah,guys?
Click to expand...
Click to collapse
do not try to update it... i tried 3 times their own ota update broke the phone os which makes it unable to go to recovery or fastboot. i will try and see if i can update firmware and fix itself
yankee77 said:
do not try to update it... i tried 3 times their own ota update broke the phone os which makes it unable to go to recovery or fastboot. i will try and see if i can update firmware and fix itself
Click to expand...
Click to collapse
I did update it and now my phone wont boot at all,after the battery hits 1%,it just wont do anything and its been 2 weeks,pc does detect it as qualcom loader but flashing without auth wont work,Im just waiting for firehose file for this stupid phone.People with auth asking for $30 for fixing it but without guarantee that it will work,what a joke.
So did you fix your phone?
yankee77 said:
do not try to update it... i tried 3 times their own ota update broke the phone os which makes it unable to go to recovery or fastboot. i will try and see if i can update firmware and fix itself
Click to expand...
Click to collapse
Yeahhh,my phone finally boot up!
But sadly the latest update failed to install.Guess I should just wait until someone patch the firehose file and try not to update until then.Fingercross!
i fixed the deadboot issue. but it wont fix the restart deadboot. try to flash every region and version firmware both recovery and fastboot. the problem still there.
vinzikidz said:
i fixed the deadboot issue. but it wont fix the restart deadboot. try to flash every region and version firmware both recovery and fastboot. the problem still there.
Click to expand...
Click to collapse
how did u fix deadboot can you elaborate? how did you flash from edl ?
gasleak08 said:
how did u fix deadboot can you elaborate? how did you flash from edl ?
Click to expand...
Click to collapse
sorry, there's is no tutorial for this and it has a quite process. you just need to throttle the proc temperature of your phone board using hot blower or any device you have. while your phone is in high temp. both pin board and battery is in unplug hold vol down then put back the board pin and battery pin at the same time. it will vibrate and fastboot will be fine.
Guys this is my procedure to turn on the phone:
I can make it turn on Android after messing with the battery and sub-board cables but this is just a workahound, trying to turn it on normally through the power button always makes it turn on in edl mode
But opening the device voids the warranty, so anyone who has access to a repair center is better off asking for the warranty
What to do:
1. Disconnect the battery cable and the secondary board cable.
2. Connect charger.
3. Hold the power button.
4. Connect the secondary board cable and quickly connect the battery cable.
5. Release the power button when the device vibrates.
It doesn't always work the first time, you may need several tries to get it
VID_20210514_152510.mp4
drive.google.com