Recover bricked M3?

[fallen_13]

Hi guys, wondering if you could help me here.

1) I recently upgraded my M3 to Nougat by mistake and tried to use the "C100B009" full rom to downgrade to MM using "Power + Vol up + Vol down".
2) I was stuck in eRecovery after the update and I realized i missed out the rollback package. So i downloaded and extracted the contents of rollback package to "dload" folder and ran the update again. But it seems afterwards, the tablet was stuck on ""Your device is booting now", and the Power + Vol up + Vol down doesn't work anymore.
3) I managed to get into fastboot and bootloader was locked. So i issued the unlock command based on keys i had saved earlier. The command said it worked and it would reboot and wipe the phone.
4) After the reboot, it seems i'm again stuck in "Your device is booting now". I can't shut down the tablet as it would just reboot, vibrate twice and show the same message again. Eventually, it flat of battery.
5) I also don't seem to be able to go into fastboot anymore. Holding Vol down and plugging into computer still gets me the "Your device is booting now" message. Also, the tablet can't hold a charge. It will blink red. Seem to charge a little after a while, then power itself into "Your device is booting now" message, drain flat, and repeat the cycle again.

Anyone could give any advice on this or would i have to bring down to a service centre for replacement..... :crying:

 

[nicolap8]

If you had read here other threads you will be able to solve at least a big part of your problem.

 

[nostep]

I just had similar situation this weekend while trying updates. I let it die, then tried to boot by plugging into good AC adapter (not PC USB). It showed booting for a while. Eventually it just came up. I had done that dead battery, then little bit of charge multiple times. Good luck.

 

[fallen_13]

I just had similar situation this weekend while trying updates. I let it die, then tried to boot by plugging into good AC adapter (not PC USB). It showed booting for a while. Eventually it just came up. I had done that dead battery, then little bit of charge multiple times. Good luck.

Hmm, when you said it just came up, did you mean the tablet booted up normally? Or you meant you could go into fastboot after your staggered charging? Because i tried charging with AC adapter before, but the tablet turns itself on after a while, and then just runs itself flat again with the "Your device is booting now" message. I can't seem to trigger fastboot mode off it.

 

[nostep]

I had previously loaded half of c128b350 and needed to load the second half via twrp. I loaded the wrong twrp (4.1) and it was stuck trying to boot it. I cannot get into fastboot without OS working. Anyway after 10 hours it finally booted the half finished b350 and I managed to get the rest from there.

 

[romeo_coi]

@fallen_13 do you solve this problems? I've got exactly problem as you

---------- Post added at 11:21 PM ---------- Previous post was at 11:21 PM ----------

[/COLOR @fallen_13 do you solve this problems? I've got exactly problem as you

 

[fallen_13]

@fallen_13 do you solve this problems? I've got exactly problem as you

---------- Post added at 11:21 PM ---------- Previous post was at 11:21 PM ----------

[/COLOR @fallen_13 do you solve this problems? I've got exactly problem as you

I tried my luck and sent it into service centre. Been a month and still waiting for replacement since they didn't have stock.

 

[romeo_coi]

I tried my luck and sent it into service centre. Been a month and still waiting for replacement since they didn't have stock.

Just messed up with this sh!t 3 days ago
I've tried several ways I can search on xda, 4pda and google.... but still no luck.
The dead battery trick then "Volume (-) + USB plug in to pc" seem to be useless.

According to the confirmation of member MuHuCTP23 in 4pda thread below, there is only one user was able to boot tablet to bootloader after did a "fastboot oem unlock" when in rollback process, What a lucky guy! And him doesn't know how he managed to got device into bootloader.

http://4pda.ru/forum/index.php?showtopic=780572&st=2020#entry64535878


Now I'm reading from this post:

https://forum.xda-developers.com/huawei-p9lite/help/huawei-p9-lite-vns-l31-fastboot-adb-t3590158

And other threads about the "totally bricked Huawei android phone" becasue of "flashing rollback wrong ways".

Some users confirmed the trick "3 button in cold boot": press and hold power button untill device powers off then release power button, quickly press and hold Vol (-) button and connect the usb cable (which is already attached to pc) right before or exactly when device vibrates will able to take device into bootloader mode. But it's really matter about timing when connect the usb cable to device.
So I tried this way and it actually did something difference:
When connect usb cable at "wrong time", device starts with 3 options screen instead of the no option screen. It's a little bit confuse here, there're two bootloop screens:
1- The device shows: Your device is unlock... and under this device is trying to boot direct to recovery.
2- The device shows: Your device is unlock... and there're 3 options choice as normal, but whatever we choice it'll be stucked as well as before :silly:
And when I can connect usb to device at the "right time", it doesn't startup in bootloop but the screen with red bolt alert then again it starts again in bootloop. I think it was tried to boot itself to bootloader mode but due to the low battery it only shows the red bolt alert. This thing is very weird because AFAIK even if You totally drained the battery the bootloader will always show up.

....
After 3 days continous try and try, now I'm thinking about give it up and send it to the store, my tablet is being covered under 30 days return policy. The main problem here is I bought this tab from Japan but I'm living in Vietnam, so Idk if foreign customers will be treated the same way as domestic customers or not. I email to the support and waiting for the reply .

 

[fallen_13]

@romeo_coi

I believe you and i went through the same steps. I spent about 3 months researching the subject before giving in and sending to service centre. My guess is that after the unsuccessful rollback, when we unlock the bootloader, the process will erase data from the tablet. But maybe some partition information had changed, so after the erase completes, the tablet becomes hard bricked instead.

Anyway, i wish you luck on the return to Japan. One thing you can try before sending back is to drain the battery fully by taping down the power button. Once that happens, you will no longer see the red bolt alert. Then you can just report as an unable to power on issue.

 

[romeo_coi]

@romeo_coi

I believe you and i went through the same steps. I spent about 3 months researching the subject before giving in and sending to service centre. My guess is that after the unsuccessful rollback, when we unlock the bootloader, the process will erase data from the tablet. But maybe some partition information had changed, so after the erase completes, the tablet becomes hard bricked instead.

Anyway, i wish you luck on the return to Japan. One thing you can try before sending back is to drain the battery fully by taping down the power button. Once that happens, you will no longer see the red bolt alert. Then you can just report as an unable to power on issue.

-I don't think after re-unlock bootloader in rollback processing, it cannot erase data because mine was stucked right after device restart without successfully boot into erase data step. May be it caused due to wrong patritions flashing then some functions not working correctly as it should. And may be with some special tools, Huawei engineers can re-write the partritions and save the device.
-And about drained the battery before contacting the supplier, I think it will no help because they can easily plug a charger into device and found that we're messed arround with system modification. So I explained to them exactly how the deivce is but in another way: after received and used device in some days for testing, then I perform a factory reset to clean it up for my own settings but the device stuck at boot screen.... Hope they accepted and return another tab for me. If not, then I have luxury paperweight
-In this case, it may be weird and hard to believe but trust me, I'm working for a large chain store system in Vietnam (smartphone cate. of course) and people in my country sometimes did something they don't even f**king know what is it. I've seen some devices with the unlocking bootloder processing hasn't done completely by previous user, and the next users are f*cked already because they will never be noticed untill they do something such as update system, unlock bootloader again.. or even just perform a factory reset. Once these processing done (luckily) completely, devices will come back to the original state and safe for use. But in some cases, these processing taking errors then devices will be bricked. I think it's the most reasonable explanation why there're more and more OEMs accepted to covered "devices with software modifications" in warranty policy.
Below is the warranty policy of the Motorola X Pure 2015 for example:

 

[x52-curcuma]

Hi there,
I was in Japan and bought BTV-W09 on 11/29 and just returned back to Canada. (Mediapad M3 is not officially available in Canada.)
And right away I upgraded to Nougat but don't like it, so down graded back to 6.0 through 2 UPDATE.APPs via dload folder method.
I found that after the down grade,the fingerprint sensor/home button not working at all.
So I tried to repeat the process of installing UPDATE.APP again. And ended up exactly the same situation as you guys.
Booting stuck at "Huawei MediaPad" + "Powered by Android" screen. Even with proper charger hooked up, the battery drains and never charge enough to do anything.
I can not force shut down, can't go into recovery or nothing. But I managed to get into some sort of recover screen. ( Press Power till the screen gets blank, then plug USB while pressing Vol-. But the recovery requires HiSuite. Since my PC is Linux and I run Win7 via VirtualBox, without sufficient battery power I can't even utilize this method.
If you guys still trying to unbrick/restore, at least you can try go into that mode by pressing Vol- immediately after pressing Power and plug in USB.
I will leave it a while to see weather the battery charges, then use some native Windows PC and HiSuite and see what happens.
If everything fails, then I have to send back to Huawei Japan for repair or use it as a paper weight!

Please let me know the current status of yours.

 

[piloki]

Hi there,
I was in Japan and bought BTV-W09 on 11/29 and just returned back to Canada. (Mediapad M3 is not officially available in Canada.)
And right away I upgraded to Nougat but don't like it, so down graded back to 6.0 through 2 UPDATE.APPs via dload folder method.
I found that after the down grade,the fingerprint sensor/home button not working at all.
So I tried to repeat the process of installing UPDATE.APP again. And ended up exactly the same situation as you guys.
Booting stuck at "Huawei MediaPad" + "Powered by Android" screen. Even with proper charger hooked up, the battery drains and never charge enough to do anything.
I can not force shut down, can't go into recovery or nothing. But I managed to get into some sort of recover screen. ( Press Power till the screen gets blank, then plug USB while pressing Vol-. But the recovery requires HiSuite. Since my PC is Linux and I run Win7 via VirtualBox, without sufficient battery power I can't even utilize this method.
If you guys still trying to unbrick/restore, at least you can try go into that mode by pressing Vol- immediately after pressing Power and plug in USB.
I will leave it a while to see weather the battery charges, then use some native Windows PC and HiSuite and see what happens.
If everything fails, then I have to send back to Huawei Japan for repair or use it as a paper weight!

Please let me know the current status of yours.

Can try power + vol up for ~3 seconds, it shuts down, then let go (timing, if you keep holding it'll go back to the loop) and it should boot to this recovery screen with 2 options, restore factory and shutdown (not fastboot or twrp). Least that's what mine does W09.

 

[x52-curcuma]

Can try power + vol up for ~3 seconds, it shuts down, then let go (timing, if you keep holding it'll go back to the loop) and it should boot to this recovery screen with 2 options, restore factory and shutdown (not fastboot or twrp). Least that's what mine does W09.

Didn't work for me. It does not charge enough. Auto shut down after about 5 min. stuck at boot then shut down for 3~4 min. of charging, and repeating forever. Just before finishing this charging, press Vol up + USB plug-in takes me into Fastboot & Rescue mode. Seems like it is missing eRecovery. Anyways, it doesn't connect to HiSuite running on native Win7 as it does not give me the required non-debugging mode connection.
Later I will try flash eRecovery image via fastboot. Most likely it will not work though without USB-Debugging on.

 

[x52-curcuma]

Okay, fastboot does not work. I can send BOOT.img, RECOVERY.img etc to W09, but can not write them into it due to lack of debugging. When getting into fastboot & rescue mode it also shows the link for rescue detail, bu the site is non-existing.
Most of the instructions EMUI/Huawei provide are useless anyway.
My remaining options are getting very little now.

 

[x52-curcuma]

I guess there is no solution to this. HiSuite's System Recovery allows you to connect W09 without debugging, but the function supports only Mediapad T2. M3 is more than a year old model but Huawei can not support it is unbelievable!
So, I gave up.

 

[piloki]

I guess there is no solution to this. HiSuite's System Recovery allows you to connect W09 without debugging, but the function supports only Mediapad T2. M3 is more than a year old model but Huawei can not support it is unbelievable!
So, I gave up.

Ah sorry to hear. You try the sd card method?

 

[x52-curcuma]

Ah sorry to hear. You try the sd card method?

Yes, I have tried that as well. Nothing works. The worst part is, aside from poor Huawei support, the battery will not charge more than a few minutes worth.