[HELP] Bricked device ? need help - Honor 6X Questions & Answers

my device is BL-L21 version (EU variant)
I saw this thread : https://forum.xda-developers.com/honor-6x/development/rom-aospextended-6-4-honor-6x-t3935711
So rebranded my phone to indian model to get emui 8 according to this video : https://www.youtube.com/watch?v=onj2Z5eh7Mo
Then flashed this custom askuccio recovery : https://drive.google.com/file/d/1qvIgmlPPJ0amS8-aNEIG3xDKc9tHxrW7/view
Now in custom recovery followed the instructions (wipe system cache dalvik data) but could got errors like "could not mount this" "unable to unmount that"
At the time I didn't know all I had to do was to change filesystem then get back to previous one.
So I went into fastboot erase system, data ,cache.
I also wiped internal storage, which I think was the big mistake I've done.
Then back into recovery flash asop6.4 and let it do it's thing, it got stuck on boot screen for quite some time.
When I got back to it, EMUI eRecovery stated something went wrong and proposed to factory reset device. Which I did but gave an error.
Now I tried
* dload method https://forum.xda-developers.com/showpost.php?p=73954487&postcount=240, download link is dead btw.
after copying dload to /sdcard/ and rebooting with vol+/vol-/pwr down, gives : "software install failed"
* HurUpdater, I have trouble finding the correct update.zip/update_all_hw.zip/update_data_public.zip files. Since I can't boot any rom right now I can't use Firmware Finder app.
I also tried to look into /tmp/recovery.log. deleted it because too big, just wanted the result of HurUpdater but I guess permissions have changed and now nothing gets written to it.
* eRecovery to try to get back to stock and do it all over but it didn't work, which is normal since everything is unlocked in the phone.
device then reboots and goes to eRecovery.
I just want to get AOSPExtended running, what should I do ?
Oh yeah also, beginner mistake : I don't have any backup.

Did I do something wrong to get no answers?

Related

IT WAS THE FINAL STEP... and it did not work. (Stuck on boot loader warning screen)

FINAL EDIT: FIXED!!! Sparsechunk files 1,2and 3 have to match the exact name with the firmware folder sparsechunk files.
I did not notice that my firmware sparsechunk files ended in .0 .1 .2 and not 1 2 3 like the tutorial had listed, so I was fastbooting the wrong sparsechunk command. That was the final fix that finally worked for me.
Original post:
SHORT VERSION:
My god this has been one crazy root journey.
I have done absolutely EVERYTHING I could pull up on google to fix my phone, and what seemed to be the final piece to the puzzle, still has not fixed anything.
My phone is bricked, and i would really appreciate help at this point.
The current problem:
When I turn on my phone, it vibrates, and displays the WARNING BOOT LOADER UNLOCKED screen, and stays there forever.
I can access my boot loader, and recovery, but I dont know what to do at this point.
I tried a quick flash stock recovery kit kat with moto tool AIO, and it didnt help.
Any ideas?
LONG VERSION (backround info may help to understand the current issue)
Now, if you want to know what began all of this, continue reading, otherwise the above is my current issue.
After successfully unlocking and rooting my phone
I downloaded SWITCHME, an app that lets you create multible users on the phone. the instructions say that you can use a sub account to test and mess around with anything because you can simply go back to the admin account that has everything untouched.
That was a lie.
1.I deleted .setup, along with a few other things THAT WHERE NOT FLAGGED AS IMPORTANT, assuming the phone would still work. and my phone went bonkers, displaying this infinite message: UNFORTUNATELY, SETUP HAS STOPPED. It was impossible to use the phone, and I could only access bootloader.
2.After endless googling, driver downloading, xda mod installing, I managed to set up my boot loader to do the guide restore stock firmware:http://forum.xda-developers.com/showthread.php?t=2542219
Sadly, I flashed the wrong model number package, I was flashing x35, when I later discovered that my phone is x45.
Flashing the x35 firmware bricked my phone further, to where it would "fail to boot up" and would only display bootloader over and over after attempting to turn the phone on.
3. Simple, I realized I flashed the wrong thing, so I downloaded the x45 firmware from the firmware teem on this website, flashed all of the commands, and bam, the phone starts up with the boot loader warning, and DOES NOT get stuck in the previous boot loader issue I had.
But now the phone wont get past that warning screen so... now im pissed.
Please, if anyone can help me I would greatly appreciate it, Im so close to getting my phone back...
EDIT 2: Looks like the phone wont stay shut down, I realized that if I dont open up boot loader, it will turn itself on and display the warning message.
EDIT:
The stuffs I have, ready to try anything:
CWM touch mod
Moto Tool AIO
Minimal ADB and Fast boot
RETUS x1045 factory firmware
All directories, folders, cmd commands are set up and working properly between all of the programs.
The phone appears to be responding to all cmd commands properly.
I also have the windows one touch super boot root method. (he superboot-windows.bat )
Im afraid to try anything major after freshly flashing the x45 firmware that seemed to bring me one step closer without the help of someone else.
I restored stock to my phone using this link yesturday http://www.ibtimes.co.uk/how-restore-motorola-moto-g-stock-firmware-1447290
it may work for you
I have almost the same problem as if the fastboot not install anything despite not display errors
great that you got it done.
maybe my few cents about my "bricking" story. (xt1032 moto g)
yesterday i wanted to change the rom from cm11 nightly to another custom rom like ehndroix/carbonrom...
first i thought that will be done in a few mins, after having already flashed a custom rom.
then the story began, getting adb work, but, 2weeks ago everything was setup and went fine. dunno why my laptop lost the "drivers".
thats the link which solved that problem: tinyurl . com / kgffjh4 [sorry cant post links outside of xda yet, spam protection]
so after a few hours of getting that fixed i, i began flashing.
suddently i got stuck in bootscreen (ehndroix logo for example)...
then i wanted to go back with my previous backup made internaly of clockworkmod. though i couldnt restore my backup because there was an error message while restoring /data of my backup
also when restoring to factory/wipe in cwm there was that error message about clouldnt "touch" /data, i dont remember the message exactly.
after thinking i bricked everything, i though lets wipe my internal sdcard, maybe that causes the /data error.
then i restarted the device and went for a shower... after 15min i came back and my device was "started".
now i dont know that exactly helped, maybe wiping all data on my phone, or just letting my device boot for a "long" time...
so, thats my yesterdays brick story.
do a factory reset if the bootloader has that option.. otherwise install or run/boot a custom revovery, then either
try the factory reset option there and reboot or..
wipe everything and install a rom
Ok try this, I'm was a victim too:
Relock and unlock bootloader
Download and flash latest Philz
From there format everything...EVERY PARTITION...switch F2FS
After switching wipe every partition again
Select and execute the other 3 wiping option ie., Clean to install new ROM and the other 2 (I can't remember now)
Do this all over again via TWRP too
Now, this is important, don't use the mfastboot for restoring stock...use the one provided by Google for its Android SDK
Flash the stock images
Flash the Moto Razr boot animation and not the one for Moto G to remove the warning sign
I'm 99.99% sure your phone will boot properly
After the phone boots, reflash the Moto G bootanimation
Good Luck!
ngr.hd said:
Ok try this, I'm was a victim too:
Relock and unlock bootloader
Download and flash latest Philz
From there format everything...EVERY PARTITION...switch F2FS
After switching wipe every partition again
Select and execute the other 3 wiping option ie., Clean to install new ROM and the other 2 (I can't remember now)
Do this all over again via TWRP too
Now, this is important, don't use the mfastboot for restoring stock...use the one provided by Google for its Android SDK
Flash the stock images
Flash the Moto Razr boot animation and not the one for Moto G to remove the warning sign
I'm 99.99% sure your phone will boot properly
After the phone boots, reflash the Moto G bootanimation
Good Luck!
Click to expand...
Click to collapse
I try to flash any recovery but after entering I get an android and says no commands, and installation does not throw errors
angelgzg said:
I try to flash any recovery but after entering I get an android and says no commands, and installation does not throw errors
Click to expand...
Click to collapse
You're still in stock recovery.
Use fastboot flash recovery xyz.zip to flash philz recovery
Use this when you're in bootloader mode.
ngr.hd said:
You're still in stock recovery.
Use fastboot flash recovery xyz.zip to flash philz recovery
Use this when you're in bootloader mode.
Click to expand...
Click to collapse
I flash the recovery but rebooted into recovery, the android keeps popping up (no commands)
FINAL EDIT: FIXED!!! Sparsechunk files 1,2and 3 have to match the exact name with the firmware folder sparsechunk files.
I did not notice that my firmware sparsechunk files ended in .0 .1 .2 and not 1 2 3 like the tutorial had listed, so I was fastbooting the wrong sparsechunk command. That was the final fix that finally worked for me.
Sorry I'm traveling a d couldnt update thread fast enough.

Soft bricked MHA-L29C432; please help!!!!

Hi guys i was trying to install a custom rom on my mate 9 (MHA-L29C432-156)so i followed the instructions ; unlocked the bootloader; then installed twrp 3.1.0-0; on twrp formated data; then full wiped and try to install AurRom from SD; but get a message that zip file is corrupted; so I tried with S.H.I.E.L.D ROM and it flashed , but then when boot goes to eRecovery, and give me 3 options download latest version and recovery; reboot and shutdown. So now I cant boot the phone, when I restarted, followed same steps , format data, full wipe and trying to installing again but getting a message about all zip files of the roms are corrupted; then i try to restore backup; and same again get the huawei logo, then the android logo , phone restarts and eRecovery again.
Please someone HELP, I use this phone for my work...........!!!!!!!!!
How did you full wipe?
Also try with Twrp 3.0.2-2
Here:www.androidfilehost.com/?fid=745425885120697579
dannytgt said:
on twrp formated data
Click to expand...
Click to collapse
Something went wrong here. You can run 'adb logcat' to see the crash details while starting.
If you have a backup on twrp then restore to get phone working. You may need to flash the public and hw-data zips afterwards though.
If you don't have a backup then you could try flashing the C636 off line firmware and then use firmware finder to go back to your original firmware
Sent from my MHA-L09 using XDA-Developers Legacy app
you may just flash the modified recovery ( See Guide subforum ) ) to bypass the update certification and authorization and reflash an original firmware. your stored files will be lost anyway in most cases.
I would bet superuser ( shield ) and SuperSU ( Aurom) messed your boot image. Both are incompatible to each other and, afaik both are incompatible to twrp 3.1.
Flash TWRP 3.0.2.2, reboot to recovery again to change version, flash the rom ( f.e. shield rom), boot once up, reboot to recovery and THEN you may flash twrp 3.1
Thanks all of you guys, I've solved the problem, it seems that's something related to the sd card, I've formated the sd and transfer the files trough another phone and then put the sd on the mate 9, I follow the steps as followed before and works successfully, now I'm on AurRom and 182 firmware.

Hanging during Boot animation

Hello, I would like some help since I got this device just yesterday.
I got it with the EMUI 4 Android 6.0 stock installed on it. Since there was no update for it I unlocked the bootloader installed twrp rooted and manually flashed EMUI 5 7.0. Everything worked fine.
I created a backup through TWRP and restored it succefully multiple times.
Then I installed the Meticulus TWRP (since I was told it is a prerequisite for the AOSP). I Flashed the AOSP but it stuck during the boot animation (30 minutes afterwards I powered it off).
I reflashed my old TWRP and tried restoring my backup. IT fails with the explanation "Cannot wipe /vendor" while at the top it says "Cannot mount /vendor (invalid argument)" "Cannot mount /product (invalud argument)".
Anyone has a clue how to fix this? Fastboot adb all works so there should be a way to boot into an OS properly?
Since AOSP was not booting i guess you forgot formatting /data partition to ext4... And did u Used Stock vendor and not openkirin ones ?
Gesendet von meinem Honor 6X mit Tapatalk
As said I have replaced the custom TWRP with the default one so I think this should not apply anymore?
The "cannot mount vendor/product" messages came from the default TWRP after I reflashed it again.
At the top it says "cannot mount /vendor" either so I guess that is the actual problem?
It would be nice to get teh AOSP up but I really want to be able to boot into something first honestly.
And did u Used Stock vendor and not openkirin ones
Click to expand...
Click to collapse
Can you please explain? When I flashed your ROM i was on your TWRP. Does this even matter anymore?
At best I would be able to restore my backup.
To me it appears to be caused by the vendor partition.
Is there any way I can manually create that through TWRP?
algg said:
To me it appears to be caused by the vendor partition.
Is there any way I can manually create that through TWRP?
Click to expand...
Click to collapse
Yes you can but not creating it through twrp, but flashing it by fastboot mode: this is because
image (.img) files needs to be flashed by fastboot mode to avoid any kind of problem.
So, you should look for the last version of stock firmware on which you was before going custom, like BLN-L21CXXXB368 for example; tell me your build number and I'll find the package for you. Then, extract from the UPDATE.APP (a very big file that contains every partition in your phone like recovery, vendor, data, ecc. - you'll find this file inside the zip archive that contains the downloaded update) the vendor.img using Huawei Update Extractor, and then flash it through fastboot mode using the command "fastboot flash vendor vendor.img".
Otherwise, you could rely on dload method to reflash a full update package, and this should really fix everything since that it'll be like a new and clean installation of the OS. Then, unlocking the bootloader again and reflash TWRP to finally restore your previous backup made when it was working would be the final step.
Feel free to ask for further help
Thanks for the reply first really appreciate it.
I got the device on EMUI 4 Marshmallow rooted it and unlocked the bootloader then installed the BLN-L21C185B140 which worked smoothly.
I used that update.zip and extracted into dload root folder and started the huawei recovery installer but it said "package not found".
I tried flashing something to vendor before with fastboot but it said command not allowed.
Maybe I am doing something wrong?
algg said:
Thanks for the reply first really appreciate it.
I got the device on EMUI 4 Marshmallow rooted it and unlocked the bootloader then installed the BLN-L21C185B140 which worked smoothly.
I used that update.zip and extracted into dload root folder and started the huawei recovery installer but it said "package not found".
I tried flashing something to vendor before with fastboot but it said command not allowed.
Maybe I am doing something wrong?
Click to expand...
Click to collapse
Latest build on Nougat after the update was BLN-L22C185B140 so? If yes, the package that you need to download is that one. Unluckily i can't help about dload method, i never had fortune using dload because package verification always failed at 5%, i tried every combination but without success.
Command not allowed while flashing vendor image... but flashing others, like recovery or boot.img is allowed? If yes, i don't know what's causing this sorry... I'm sure that my friend @shashank1320 could surely help more than me about how using dload method correctly. Check his signature, it should contain a guide on how to use it
RedSkull23 said:
Latest build on Nougat after the update was BLN-L22C185B140 so? If yes, the package that you need to download is that one. Unluckily i can't help about dload method, i never had fortune using dload, i never be able to using it successfully because package verification always failed at 5%.
Command not allowed while flashing vendor image... but flashing others, like recovery or boot.img is allowed? If yes, i don't know what's causing this sorry... I'm sure that my friend @shashank1320 could surely help more than me about how using dload method correctly. Check his signature, it should contain a guide on how to use it
Click to expand...
Click to collapse
For fastboot yes flashing recovery or boot do work but vendor does not. Maybe the ISO is corrupted somehow I will try it again on a different machine now with the tool.
The link you posted the dload method from is the one where I initially found it as well so yea.
Also it shouldn't matter what I install since the only thing I need is the actual vendor (and product?) partition to work. I have a functional backup just TWRP cannot create/mount the partitions. So even a way to just create them without any data would actually fix my problem (at least I hope so?)
When trying to use Fastboot to flash the vendor/product img I get remote: Command not allowed (yes my bootloader is unlocked) although I can flash the recovery without any problem.
The dload method does not work as said. I placed the extracted content of the update.zip into the dload folder but the software "cannot find" the package.
algg said:
When trying to use Fastboot to flash the vendor/product img I get remote: Command not allowed (yes my bootloader is unlocked) although I can flash the recovery without any problem.
The dload method does not work as said. I placed the extracted content of the update.zip into the dload folder but the software "cannot find" the package.
Click to expand...
Click to collapse
@RedSkull23, thanks for the tag mate.
 @algg, No need to flash the vendor image as you already had the stock vendor img.
Now what else you can try is to flash the stock recovery, boot to stock recovery, select factory reset and reboot. It should most probably fix the issue.
If not, reflash the TWRP, a regular TWRO available and not specific to elite or meticulous, but generic one given by OldDroid.
I hope you have downloaded the content for dload, if not, download these for B140.
Flash this via TWRP- http://update.hicloud.com:8180/TDS/...afnaf/update_data_full_BLN-L21_hw_meafnaf.zip
no further changes and Then use dload method for this file- http://update.hicloud.com:8180/TDS/data/files/p3/s15/G1756/g1755/v105054/f1/full/update.zip
Try above and provide feedback. This is what I could think of best possible way to have everything with all system app working.
If not, let me know and I will try to help further.
Hi, I thought I need the vendor image since TWRP (all versions) tell me "Could not mount/wipe vendor" and "Could not mount/wipe product" "invalid argument" for both.
I tried the factory reset before but it does not work. It stops at 23% then shows a red exclamation mark and just goes to the original screen with the 3 buttons (restart, shutdown and wipe).
I am currently trying to get it to recognize my sd card. But somehow it does not work through TWRP it just does not recognize the 8GB SD Card. Also I am currently on the TWRP I was before all of this happened (3.1 openkirin). Without the SD Card recognized I can't put the dload files for it on it and in turn I can't use the dload.
I mean technically it should very well be possible to fix the device since it isn't a real brick and even TWRP and Fastboot load. It's just that all those little things are somehow ruining it.
Edit: I will get a new micro sd for some reason this one does nt work. I'll say then whether the flash then dload worked.
@shashank1320
Mind explaining why I should first use TWRP to flash something and then on top of it use dload?
And why those specific files?
algg said:
Edit: I will get a new micro sd for some reason this one does nt work. I'll say then whether the flash then dload worked.
@shashank1320
Mind explaining why I should first use TWRP to flash something and then on top of it use dload?
And why those specific files?
Click to expand...
Click to collapse
Sure, let me explain.
The first file is the data file which will install few systems apps like file manager, updater, themes, clock, fm radio etc. This will work via dload as well but the installation time is around 3-7 seconds so, over the course of time and flashing few times, i realised that these PV files cannbe flashed via TWRP and it works perfectly fine specific to PV files( twrp won't supoort other stock zips). We foash this first so that it updates your buld number and also does not replace the recovery with stock (as if you flash the main update zip first, it will replace with stock recovery so flashing the 2nd file will be quick but with unstable system apps, sometime).
Now we flash the main zip file with update.app via dload and it Install the main firmware for boot, vendor, recovery, system, usrdata etc.
Hope this explanation helps, if not let me know and I will rephrase myself.
It does help. I did all of this and now in the dload app I get "Software install failed Incompatibilty with current version please download the correct update package".
When I flashed the zip you linked me with TWRP it said "cannot mount /data /vendor /product". Appearently data cannot be mounted since it is encrypted.
Any clue as to what I am doing wrong? Or is this device now a real brick with functioning recovery but without OS?
Is there any way I can "debug" what is going on while the boot animation is playing?
What is confusing me is that the boot animation plays just normal but it simply does not continue to the actual OS.
algg said:
It does help. I did all of this and now in the dload app I get "Software install failed Incompatibilty with current version please download the correct update package".
When I flashed the zip you linked me with TWRP it said "cannot mount /data /vendor /product". Appearently data cannot be mounted since it is encrypted.
Any clue as to what I am doing wrong? Or is this device now a real brick with functioning recovery but without OS?
Click to expand...
Click to collapse
Not bricked..its just Data is not mounted or encryption. Should never encrypted it. NVM.
Do one thing, boot to twrp recovery. Try flashing and get error, then go to main TWRP page and click on reboot, select recovery out of 4 options( power off, system, bootloader and recovery). It will boot to recovery, now try flashing it again and see. Most if the time it helps.
Else, go to main page, select wipe, click on format rather than wipe here, it will prompt for typing Yes to confirm. Biit to recovery from main twrp page ( as mentioned above). And try this same thing of formatting data couple of times and then flash the zip and then dload.
I know these are tedious steps but inhave revived my device many a times with all these tricks after some efforts.
Good luck
YAY it works.
Just to recap what I did:
I flashed your thing first through TWRP tried to flash your other link with dload (which did NOT work)
Then I flashed the thing (emui5 Android 7 for Europe) through TWRP played in my old backup of exactly this through TWRP cleared dalvik & cache.
Then I waited 20 minutse and now it started.
Really thanks to all of you very nice people here. I would be very baffled if it wasnt able to repair the device since Fastboot and Recovery still work.
But Huaweis recovery is beyond terrible.
algg said:
YAY it works.
Just to recap what I did:
I flashed your thing first through TWRP tried to flash your other link with dload (which did NOT work)
Then I flashed the thing (emui5 Android 7 for Europe) through TWRP played in my old backup of exactly this through TWRP cleared dalvik & cache.
Then I waited 20 minutse and now it started.
Really thanks to all of you very nice people here. I would be very baffled if it wasnt able to repair the device since Fastboot and Recovery still work.
But Huaweis recovery is beyond terrible.
Click to expand...
Click to collapse
It is terrible indeed. Glad your phone working.
Thanks to @RedSkull23 for tagging, else I may have not responded as he was already involved and was helping as usual.:good:
algg said:
Really thanks to all of you very nice people here. I would be very baffled if it wasnt able to repair the device since Fastboot and Recovery still work.
But Huaweis recovery is beyond terrible.
Click to expand...
Click to collapse
I'm happy for you man, indeed it would be so bad, especially because you got this device 3 or 4 days ago if i didn't read bad, anyway what matters is that now it works. Are you able to restore the previous backup through TWRP now? (But before trying... Make a backup of your actual OS )
shashank1320 said:
It is terrible indeed. Glad your phone working.
Thanks to @RedSkull23 for tagging, else I may have not responded as he was already involved and was helping as usual.:good:
Click to expand...
Click to collapse
Are you joking man? I just tagged you for more help, but practically you helped him in everything, not me; I'm sure that you would noticed the thread and helped as always even without my tag, i just speeded up things for being helpful to algg.
algg, I'd like to apologize myself; i didn't vanished after tagging shashank, today i just was at work and obviously i was busy for help, but as i saw with pleasure he already helped you to restore your OS and that was the objective. Nice one, guys!

Bricked honor 8 please help

Hello, today while trying to get back to stock i wierdly bircked my honor 8
I flashed the stock recovery and stock boot img
Then i flashed a rollback package and a marshmallow package which i used for this same thing before.
Now the phone didnt start for a solid 30 minutes and ive decided to reflash the rollback and marshmallow package, but after i flashed the rollback got stuck at the boot logo, not even the stock bootanimation showing up.
The phone doesnt reboot neither in any of the recoveries nor in bootloader.
Any help would be appreciated.
Stephen
Okay so after all of this i managed to reboot to bootloader and get my hands on one of my previous unlock codes. So now ive got an unlocked bootoader, but after fashing twrp the phone is stuck at the 'your device is booting now' when im trying to get in it
I thing you have flashed the wrong TWRP, check for the latest version or at least the one for your build
uh well, hello there again.
i've tried to do the dload method which failed(i used lots of versions tho none worked)
and i've tried flashing marshmallow twrp, which at the moment, well, it cannot mount anything. no partition can get mounted.
Does any of you guys have an idea of what i could try?
thanks in advance
Does it mean that you have access to TWRP ? if TWRP cannot mount a partition, go into mount section, tick system, data, boot, vendor and then reboot to TWRP again. Then try your previous operation. If it cannot mount data, go into wipe, advanced wipe, and click on format data, then restart TWRP and try again
seems like i somehow broke the partition table, cause it shows every storage as 0 mb and mounting isn't available, cant tick the option. Looks like i will have to find some service center to repair it by my own cost, by the end of the month. Though im giving it around the 25th so i got some more time till then, so maybe i find some solution to this problem.
Hey, so I managed to make the phone work again.
I have flashed boot cust recovery recovery2 and system from the italian marshmallow firmware, then I flashed that same firmware using dload method(tho it failed at 99%)
ØG_SQUAÐ said:
Hey, so I managed to make the phone work again.
I have flashed boot cust recovery recovery2 and system from the italian marshmallow firmware, then I flashed that same firmware using dload method(tho it failed at 99%)
Click to expand...
Click to collapse
You tried only once? Maybe you should now try to flash TWRP recovery and restore a backup made by TWRP. I can provide you one but for FRD-L09, not another. Another method would be to flash the rollback package and then retry flashing an EMUI 4.X ROM (dload method for both), hope you'll figure it out
I think i expressed myself wrong.
That was how i got the phone to work.
Oh lol I misunderstood because of the "it failed at 99%" and I thought the phone wasn't rebooting , no matter I'm glad you succeeded

[SOLVED!] To senior Devs & members with mate 8 64gb variant experience

Hi senior Devs. I hope you can help with this. I'll start off by saying that sometines, with simple things, I can be a bit noobish so to speak. So I have a couple of silly instinctive questions first before I explain.
1 - if I have no boot partition, will the phone still boot up and just hang on that "your phone is unlocked and can't be trusted" message
2 - if boot partition is still there, where in twrp can I see it and flash the necessary boot.img?
I know you guys are busy so I'll show as much mercy as possible by making a long story short. I'll explain what I did in point form.
-Phone - 64gb variant, build L29C1856B200
-I tried to rebrand with SRK tool to L29C432. OEM change was successfully and phone rebooted automatically.
-Change robuild.display.id was successfull. In about phone-build number was showing C900B200. After that phone was supposed to reboot and automatically install update from as card.
-Rebooted the phone and went into bootloop.
-Booted into twrp and flashed L29C432B560, the update zip and the hw mumbo jumbo zip. Both failed with sparse and writing errors.
-Someone suggested flashing system images to phone which made sense sort of, so I flashed boot.img to boot partition ( which I now believe was the wrong thing to do ) and flashed recovery and system images to system.
-Nothing worked, still had bootloop.
-Then I thought I needed to wipe, format, etc and reflash c432b560 zip files. Did that and this time I had same bootloop but no twrp. Only Huawei recovery and rescue mode only, hence my earlier post in q/a which I recently renamed as the title was wrong.
-for the last 4 days, I had no fastboot. Until last night. Don't know how or why but I've got fastboot now so I tried rayglobe unbrick.
-Flashed custom.img, recovery.img, boot.img and system.img from L29C432B560 successfully, much to my surprise. I took video because was expecting lots of errors. Not one error. Everything was written and flashed according to rayglobe.
-Still nothing.
-At 6am ( still havent slept yet ) Went back to SRK tool and reflashed twrp 3.0.2, prompt asked me if I wanted to over write, yes, flashed and rebooted into twrp. Relief of sorts.
-In twrp if I click on restore, it shows backup file for C900B200. Just like it did before.
I really really appreciate any senior developer who takes time to read this and I simply ask for instructions for what to do next. Knowing my luck it probably isn't as complicated as it seems.
With a lot of help from danwalkert, my mate 8 lives again. Flashed c432b330 emui 4.1 stock via 3 button method.
you can not restore a Backup from Nougat to MM.This can not boot into System.
You must flash the B560 again and after flashing must use the Rollback UPDATE.APP to go to MM.
After Rollback flash B192/B180 or B211 via dload Method.
Flash twrp,root or what you want

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