No OS, Relocked and now bootloop!!!

[lukanz]

i recently tried to downgrade my Mediapad M3 (btv-w09), but somehow screwed up...

1. rebooted in twrp and formatted system, data, cache, internal
2. i downgraded to emui 4 dload method it worked and i booted to fastmode and installed wrong twrp
3. stupidly i also relocked the bootloader
4. finnaly im stucked in a bootloop and cant enter recovery, erecovery or fastboot and not even dlload

i get 2 bootloop screens
one where you have the 3 options and one where it just saying device will boot...

maybe anyone knows how to unbrick!?

thx

 

[Gerylla]

yes.... you need same tools...

 

[lukanz]

solved my problem

my problem was that i wanted to try the dload method, so i drained the battery but after that i could not recharge it because the tablet first boot then starts to charge and for the dload you need at least 10% .....

the solution (should work for all Huawei devices) :
---------------------------------------------------------------
1. If you have enough battery but cant boot to fastboot by pressing volume down + power button
- press volume down and plug the charging cable (which should be connected to your pc, not charger!!!)

2.If you have dont enough battery
- press volume up and plug the charging cable (which should be connected with the pc)....this will prevent a boot and let you charge your device, to try the dload method

to enter dload :
--------------------
1. from your tablet type ()()2846579()() in your calculator (landscape mode)
2. turned off tablet (bricked): volume up + volume down + power button



Some Links for those who wants to downgrade their M3 to EMUI4:
------------------------------------------------------------------------
- Rollback files can be found here:
https://consumer.huawei.com/it/support/tablets/mediapad-m3-8/

- TWRP
https://androidfilehost.com/?w=files&flid=125388
be carefull for EMUI4 only download twrp_BTV-W09_greatslon or twrp_BTV-DL09_greatslon.img (twrp_BTV-DL09_5_greatslon.img & twrp_BTV-W09_5_greatslon.img are just for EMUI5 )


- Root
Magisk : https://forum.xda-developers.com/apps/magisk/official-magisk-v7-universal-systemless-t3473445
SuperSU for EMUI4 : https://androidfilehost.com/?fid=962187416754458671




PS: EMUI4 is 1000x better then EMUI5 for the M3

 

[sam10000]

Great post. Wish it had appeared much earlier.

I screwed up and tried to use the downgrade-to-Marshmallow packages whilst already in Marshmallow, thus soft-bricking the M3.

https://forum.xda-developers.com/mediapad-m3/help/m3-apsabnormal-bricked-t3779100

“Volume Up + Volume Down and Power Button” method no longer works. The machine no longer boots into Android.

Are the partitions and e-recovery damaged and there is no way to flash the M3 now?

Any suggestions welcome!

Thanks.

 

[lukanz]

Great post. Wish it had appeared much earlier.

I screwed up and tried to use the downgrade-to-Marshmallow packages whilst already in Marshmallow, thus soft-bricking the M3.

https://forum.xda-developers.com/mediapad-m3/help/m3-apsabnormal-bricked-t3779100

“Volume Up + Volume Down and Power Button” method no longer works. The machine no longer boots into Android.

Are the partitions and e-recovery damaged and there is no way to flash the M3 now?

Any suggestions welcome!

Thanks.

No dont think that your devices is bricked, had the same problem and it worked out for me !!!


if you can boot into fastboot :
------------------------------------------
1. download rollback files & extract the dload on your desktop
2. download Huawei Update Extractor [UPDATED: v0.9.9.5]
https://forum.xda-developers.com/showthread.php?t=2433454
3. watch the how to use video
https://www.youtube.com/watch?v=XAtoaL6i_i0
4. extract thise .img files
- BOOT.img
- CUST.img
- RECOVERY.img
- RECOVERY2.img
- SYSTEM.img
5. flash those files zsing this commands
fastboot flash boot BOOT.img
fastboot flash cust CUST.img
fastboot flash recovery RECOVERY.img
fastboot flash recovery2 RECOVERY2.img
fastboot flash system SYSTEM.img
fastboot reboot



if you can't boot into fastboot :
-----------------------------------------------
- press volume up and plug the charging cable (which should be connected to a pc)....this will prevent a boot and let you charge your device and wait till your tablet charges and it will boot into erecovery then try online download or the dload method


good luck

 

[sam10000]

No dont think that your devices is bricked, had the same problem and it worked out for me !!!


if you can boot into fastboot :
------------------------------------------
1. download rollback files & extract the dload on your desktop
2. download Huawei Update Extractor [UPDATED: v0.9.9.5]
https://forum.xda-developers.com/showthread.php?t=2433454
3. watch the how to use video
https://www.youtube.com/watch?v=XAtoaL6i_i0
4. extract thise .img files
- BOOT.img
- CUST.img
- RECOVERY.img
- RECOVERY2.img
- SYSTEM.img
5. flash those files zsing this commands
fastboot flash boot BOOT.img
fastboot flash cust CUST.img
fastboot flash recovery RECOVERY.img
fastboot flash recovery2 RECOVERY2.img
fastboot flash system SYSTEM.img
fastboot reboot



if you can't boot into fastboot :
-----------------------------------------------
- press volume up and plug the charging cable (which should be connected to a pc)....this will prevent a boot and let you charge your device and wait till your tablet charges and it will boot into erecovery then try online download or the dload method


good luck

Many thanks for your encouraging reply.

However, I am not sure I can flash

*****5. flash those files zsing this commands
fastboot flash boot BOOT.img
fastboot flash cust CUST.img
fastboot flash recovery RECOVERY.img
fastboot flash recovery2 RECOVERY2.img
fastboot flash system SYSTEM.img
fastboot reboot*****

because my M3 has a locked bootloader (the bootloader has never been unlocked), did not have USB debugging selected, has never been rooted, and no TWRP installed.

Anyway, if I can get into fastboot mode, I'll give method (1) a try. Should I connect the M3 to a PC and use ADB to flash?

Thanks again.

 

[sam10000]

solved my problem
PS: EMUI4 is 1000x better then EMUI5 for the M3

In what ways is EMUI 4 better for the M3, if I may ask? Thanks.

 

[lukanz]

In what ways is EMUI 4 better for the M3, if I may ask? Thanks.

its just my opinion, but if feel snappier, battery is also better i think...

 

[Joe3Stix]

Many thanks for your encouraging reply.

However, I am not sure I can flash

*****5. flash those files zsing this commands
fastboot flash boot BOOT.img
fastboot flash cust CUST.img
fastboot flash recovery RECOVERY.img
fastboot flash recovery2 RECOVERY2.img
fastboot flash system SYSTEM.img
fastboot reboot*****

because my M3 has a locked bootloader (the bootloader has never been unlocked), did not have USB debugging selected, has never been rooted, and no TWRP installed.

Anyway, if I can get into fastboot mode, I'll give method (1) a try. Should I connect the M3 to a PC and use ADB to flash?

Thanks again.

Sam10000 - wondering if this resolved your problem? I'm in the same boat, although it looks like the rollback files are no longer available for download.