Need help to downgrade from Nougat to Stock Rom - Huawei P9 Questions & Answers

Hi all, i've been trying to fix this for 2 days and still failed to get it working.
I regret that i quickly jump into the nougat build and would like to get back to stock rom for now.
I tried downloading all the ROMs at stock rom thread and keep on encountering error when update reached 51% with software package/update failed error message.
I'm using P9-L19 and hopefully can revert back to C636 roms.
Thanks.:crying:

have you try this?
http://forum.xda-developers.com/p9/development/tool-srk-tool-huawei-bootloader-root-t3374068

lomunet said:
have you try this?
http://forum.xda-developers.com/p9/development/tool-srk-tool-huawei-bootloader-root-t3374068
Click to expand...
Click to collapse
As someone new to this, this seems kinda complicated.
I'll give it a try. Just have to follow the instruction in the video?

Download the stock rom to external memory card in dload folder and use this code in phone dialer
*#*#2846579#*#*
And select update system

Flash update in dload don't work
Please help

Is your bootloader unlocked? Do you have a twrp backup?
I don't know if that's a good idea, but you could wipe system partition in twrp then flash stock recovery and try stock rom again? Going by the assumption that your current system is causing the update to fail.
Maybe nougat beta has a new recovery that won't flash old firmware? So maybe try an old recovery?
I'm just brainstorming though, no idea if any of this works. So try at your own risk.

yamabokra said:
Download the stock rom to external memory card in dload folder and use this code in phone dialer
*#*#2846579#*#*
And select update system
Click to expand...
Click to collapse
Just ordered a microsd card for this. I'll let you know how once the sd card arrived.

clouds5 said:
Is your bootloader unlocked? Do you have a twrp backup?
I don't know if that's a good idea, but you could wipe system partition in twrp then flash stock recovery and try stock rom again? Going by the assumption that your current system is causing the update to fail.
Maybe nougat beta has a new recovery that won't flash old firmware? So maybe try an old recovery?
I'm just brainstorming though, no idea if any of this works. So try at your own risk.
Click to expand...
Click to collapse
Hello, my P9 is 100% origin.

I managed to use an OTG cable and put the firmware (update.app) on a flash drive under the dload folder. then powered the phone off and pressed both the volume keys + power and the flashing started

you need to download full stock rom the same version as you have before upgrade to N. then try to flash via project menu (*#*#2846579#*#*)
if this method doesn't work you may need to goto recovery menu and wipe data/factory reset. then you might lost all your theme and system apps.
but you will be back to to stable stock rom. if you need to use theme and need the stock system app again to have to Root your device. and install data/hw_init via SRKTool
Hope this help.

OnimushaPooh said:
you need to download full stock rom the same version as you have before upgrade to N. then try to flash via project menu (*#*#2846579#*#*)
if this method doesn't work you may need to goto recovery menu and wipe data/factory reset. then you might lost all your theme and system apps.
but you will be back to to stable stock rom. if you need to use theme and need the stock system app again to have to Root your device. and install data/hw_init via SRKTool
Hope this help.
Click to expand...
Click to collapse
Do you have the full stock rom link available? I tried to wipe data/factory reset and it still remains at 7.0.

calintztan said:
Do you have the full stock rom link available? I tried to wipe data/factory reset and it still remains at 7.0.
Click to expand...
Click to collapse
After wipe data you need to dload stock rom again though
What is your build number before goto 7.0?

OnimushaPooh said:
After wipe data you need to dload stock rom again though
What is your build number before goto 7.0?
Click to expand...
Click to collapse
I tried to dload stock rom and it gives me some weird warning message and the update is stuck at 5% for 30++ mins.
L19 C636 B150 .

calintztan said:
I tried to dload stock rom and it gives me some weird warning message and the update is stuck at 5% for 30++ mins.
L19 C636 B150 .
Click to expand...
Click to collapse
OK you need Eva l19c636b168 you can find it here http://forum.xda-developers.com/p9/development/rom-stock-rom-eva-l19c636b168-t3419586

OnimushaPooh said:
OK you need Eva l19c636b168 you can find it here http://forum.xda-developers.com/p9/development/rom-stock-rom-eva-l19c636b168-t3419586
Click to expand...
Click to collapse
Sadly, it doesnt seems to work. I'll send my phone to service centre tomorrow and hopefully they can fix it.

calintztan said:
Sadly, it doesnt seems to work. I'll send my phone to service centre tomorrow and hopefully they can fix it.
Click to expand...
Click to collapse
First unlock your bootloader - then use Huawei Update extractor to extract ( I suggest the C636B168 Rom) from the Update.App the recovery.img - after flash from an adb folder the recovery.img through fastboot - use the three button to install the Rom and you're ready.
Warning.. everything in your internal storage will be erased so make a backup first.

crispaf77 said:
First unlock your bootloader - then use Huawei Update extractor to extract ( I suggest the C636B168 Rom) from the Update.App the recovery.img - after flash from an adb folder the recovery.img through fastboot - use the three button to install the Rom and you're ready.
Warning.. everything in your internal storage will be erased so make a backup first.
Click to expand...
Click to collapse
This method should work. :good::good:

i installed the huawei p 9 nougat version and i wanted to downgrade but nothing seems to work. I have got unlocked bootloader and when i had emui 4.1 my phone was rooted and i had twrp. But now i can´t boot into twrp. How can i downgrade ?

Related

[Q] Update with open bootloader and TWRP

Hi!
Soon we can expect some update to P9. Can I update in the future through OTA with open bootloader and root?
Yes, just flash stock recovery, make update and flash twrp back.
Thanks, where can we find original recovery? any idea?
Jostian said:
Thanks, where can we find original recovery? any idea?
Click to expand...
Click to collapse
you can flash it with the SRK Tool: http://forum.xda-developers.com/p9/development/tool-srk-tool-huawei-bootloader-root-t3374068
Edit: stock recovery also included in this pack: http://forum.xda-developers.com/p9/how-to/guide-root-huawei-p9-t3367800
Extra info, i have updated today:
Once you have flashed back original recovery you can begin update. But it is going to fail. Your phone first downloading a small update package (mine was 175mb) but since there were some changes due to root it failed immediately. You phone restarts and is downloading the full update package (~1.7gb). That is going to be OK.
You have to reflash TWRP and reflash root zip in order to have root.
so no issues with xposed when upgrading?
clouds5 said:
so no issues with xposed when upgrading?
Click to expand...
Click to collapse
I think only if you have systemless xposed installed...
smohanv said:
I think only if you have systemless xposed installed...
Click to expand...
Click to collapse
I have the custom one from Wanam that keeps the huawei theming engine intact. Is that systemless?
clouds5 said:
I have the custom one from Wanam that keeps the huawei theming engine intact. Is that systemless?
Click to expand...
Click to collapse
Yes. It is systemless. If you have both systemless root (SuperSU 2.62 and after) and systemless xposed, update should not be an issue.
I flashed stock recovery, update failed. now i can't download the update again. (rooted with supersu v2.76 and xposed by wanam)
TheFusi0n said:
I flashed stock recovery, update failed. now i can't download the update again. (rooted with supersu v2.76 and xposed by wanam)
Click to expand...
Click to collapse
same for me.
hi
same for me ( recovery stock - uninstall supersu with unsu.zip )
any idea
edit: same problem after restoring backup twrp no ota available
Edit2: i should restore p9 with dload b136 ( full wipe and relock bootloader ) and after made the ota update and restore backup
scedric57 said:
hi
same for me ( recovery stock - uninstall supersu with unsu.zip )
any idea
edit: same problem after restoring backup twrp no ota available
Edit2: i should restore p9 with dload b136 ( full wipe and relock bootloader ) and after made the ota update and restore backup
Click to expand...
Click to collapse
so it worked for you after resetting the phone? The status of your bootloader should have no impact on OTA from what I've seen.
Hi when you reflash with the firmware b136 by dload the phone do itself a full wipe and relock the boot loader
After the ota b166 was made fine
scedric57 said:
Hi when you reflash with the firmware b136 by dload the phone do itself a full wipe and relock the boot loader
After the ota b166 was made fine
Click to expand...
Click to collapse
thx, at least there is a way not prepared to go through all that though. I just realized I still have the update files on my phone (under \Internal storage\HwOUC\54265), there are two files: update.zip (381 mb) and update_data_hw_eu.zip (84 mb).
All I have to do is start up the update process again, as the files are still there. I tried moving these to dload folder on the sd card, packed, unpacked etc nothing seems to make it work so far. If I copy just the update.app from inside the update.zip the update process works but nothing changes, still on B136.
Yeah, holding back here for the moment, until we have a clear idea on how to update. I'm not needing b166 that much, that I have to jump through all those hoops, reset, wipe etc. just for the update.
How can i flash the stock recovery, tryed with STK Tool got an failed . (Command not allowed)
Ok, Recovery should now installed, but, when i press all 3 Buttons i got EMUI "Download latest version and recovery" "Reboot" and "Shutdown" When i click Download.... he cant download any files, wifi is working!
But it didnt install the Update.APP from the dload Folder. (B166)
I am at the Moment on B136
aliensmille said:
How can i flash the stock recovery, tryed with STK Tool got an failed . (Command not allowed)
Ok, Recovery should now installed, but, when i press all 3 Buttons i got EMUI "Download latest version and recovery" "Reboot" and "Shutdown" When i click Download.... he cant download any files, wifi is working!
But it didnt install the Update.APP from the dload Folder. (B166)
I am at the Moment on B136
Click to expand...
Click to collapse
Not exactly understanding what you are asking. For some reason moving the update.app from B166 in the dload folder is not working for this update. So at this moment there is no way to manually update.
If your OTA update failed and/or you don't get the update notification anymore there is only one way to get B166 at the moment: Flash full stock B136 (dload method), which does a factory reset and reverts everything back to stock, then you will get the update notification back and the update will work, even with unlocked bootloader.
I tried to install B162, that doesn't work with dload. My Bootloader is still unlocked, stock recovery is now installed, still rooted.
Should I try to install b136 and try to get the update?
I need L19C432B136, have someone an link for me, cant find this ROM

Huawei p9 EVA-LC09 NRD90M test-keys no apps

Hello guys, I read lots of topics about this issue and I would like to explain mine.
I wanted to try Android 7 so I decided to update with B378 firmware.
First of all I got unlocked and rooted phone and I made a huge mistake because I forgot to unroot it before flashing the new firmware.
By the way, I flashed the B378 firmware following the dload method using the *#*#2468579#*#* menu and it worked.
At the first boot I immediately noticed that the phone was missing of all the system apps including camera, calculator, flashlight, keyboard.. and the build number appears to be NRD90M test-keys. The updater menu disappeared as well.
About the keyboard I fixed the problem simply activating it in the settings menu but all the apps were still missing.
I saw I had to flash the B378_update_data_full_hw_eu to restore the apps and here started the odissey.
I couldn't boot the recovery cause it was incompatible with Nougat so after a long search I found the TWRP 3.0.2-N and now it works.
I downloaded the B378_update_data_full_hw_eu.zip package, unzipped it in the dload folder but the hidden menu (*#*#2468579#*#*) isn't there anymore. Nothing happens when I digit that code.
So i tried to boot the phone with vol +, vol -, pwr button pressed and the emui recovery installed the package. Installation was 100% succesful.
The apps are still missing..
What's next step now?
A prerooted device not allows to flash hw/eu. Its your choice, downgrade, or Factory reset + flash the data package with dload.
dkionline said:
A prerooted device not allows to flash hw/eu. Its your choice, downgrade, or Factory reset + flash the data package with dload.
Click to expand...
Click to collapse
now my device is unrooted, the hw/eu flashes correctly but I still don't have the apps.
So I could try to wipe and factory reset via recovery and flash again?
Well I think I did worst than before..
I wiped and formatted from recovery and installed again the b378 firmware using vol+ vol- pwr combination (I had to do like this cause the hidden menu doesn't work), the flash was ok 100% succesful.
Before I still have the keyboard because I updated from my previous firmware but now I don't have it as all the other apps.
I tried then to flash the sw/eu, installation succesful 100% but it's the same! No apps, no keyboard, no updater menu....nothing.
What can I do? Format everything again and flash another firmware? Any suggestion? Which one is the best one for android 7?
Hello
I had the same problem. Wrocł the MM 136 and late 182, 360,361,378. I have all the applications and it works perfectly.
Only Downgrade and upgrade can solve it. But dont forget to unlock on b182 if you want root on B378.
dkionline said:
Only Downgrade and upgrade can solve it. But dont forget to unlock on b182 if you want root on B378.
Click to expand...
Click to collapse
please, can you tell me how to downgrade or can you give me a link?
thank you..it's so frustrating
MystikRiver said:
please, can you tell me how to downgrade or can you give me a link?
thank you..it's so frustrating
Click to expand...
Click to collapse
what was your stock build. ? here is downgrade instructions
Arnys said:
what was your stock build. ? here is downgrade instructions
Click to expand...
Click to collapse
Ok, I restored android 6 with emui 4.1.1 all it's working. Build B182.
I wonder if I can flash android 7 without problems
And? Do the update to B378?
Is really necessary pass by B360, 361, etc?
Thanks

[TIPS] Revert Custom Rom to Official and untouched - Hard restore

Hi!
I see the large number of requests concerning the roolback of a custom rom to a official and untouched EMUI 4, i decide to create this thread.
After follow that methode, you able to rest on official EMUI and get the new update automatically on OTA (directly on your phone) OR try to install custom rom with a clear and good base version.
1. You ave access on TWRP?
-If not, pleas unlock your bootloader (again) and flash TWRP recovery for you actual version (marshmallow or nougat).
-perform a full wipe and restore your partitions on "ext4" format, shutdown phone.
2. Get a "oem_info.zip" for your model phone (dont extract the .zip) and push it on your internal or external sd.
-This archive contain cust and oem info for patched your phone at the correct manufacture information.
-I have a link for VNS-L31 (c432, but is not very important) HERE LINK
-If you have other model (VNS-L31) pleas find a correct patch for you (VNS-L21, ...).
3. Find and download a EMUI marshmallow official full-ota update.
-for a VNS-L31 i advice choice a VNS-L31C432B160 full-ota update.
4. Unpack your update archive.
5. Create "dload" folder on your internal or external sd and put it UPDATE.APP
6. Reboot phone on TWRP recovery and flash "oem_info.zip"
7. Use dload methode for update (hold 3 buttons phone and dont release before "dload screen" appears)
8. Unlock your bootloader again (important!) And make a factory reset
9. Your phone reboot (please wait ) and done!
Ok now you are on official version, please update on setting menu >> update and choice, rest on official or flash a custom rom..
P9 lite brick precision:
In my personal experience the "p9 lite" is very easy to flash, mod or other tips and the risk of HARD brick is very very tiny.
If you see this page and your phone bootloop, relax, keep calm at 99,999% you have a little and ridiculous brick
Good luck and flash happy!
hi! i'm on 381, on my phone i have root, twrp and elite kernel...this guide is good for me???why after dload method i have to re-unlock my bootloader??
thank you and sorry for my english XD
macao1989 said:
hi! i'm on 381, on my phone i have root, twrp and elite kernel...this guide is good for me???why after dload method i have to re-unlock my bootloader??
thank you and sorry for my english XD
Click to expand...
Click to collapse
Yes, is good for you.
Not necessary to re-unlock bootloader.
Therand said:
Hi!
I see the large number of requests concerning the roolback of a custom rom to a official and untouched EMUI 4, i decide to create this thread.
After follow that methode, you able to rest on official EMUI and get the new update automatically on OTA (directly on your phone) OR try to install custom rom with a clear and good base version.
1. You ave access on TWRP?
-If not, pleas unlock your bootloader (again) and flash TWRP recovery for you actual version (marshmallow or nougat).
-perform a full wipe and restore your partitions on "ext4" format, shutdown phone.
2. Get a "oem_info.zip" for your model phone (dont extract the .zip) and push it on your internal or external sd.
-This archive contain cust and oem info for patched your phone at the correct manufacture information.
-I have a link for VNS-L31 (c432, but is not very important) HERE LINK
-If you have other model (VNS-L31) pleas find a correct patch for you (VNS-L21, ...).
3. Find and download a EMUI marshmallow official full-ota update.
-for a VNS-L31 i advice choice a VNS-L31C432B160 full-ota update.
4. Unpack your update archive.
5. Create "dload" folder on your internal or external sd and put it UPDATE.APP
6. Reboot phone on TWRP recovery and flash "oem_info.zip"
Click to expand...
Click to collapse
I can do everything up to point 6... won't enter to twrp... stays on Your device is now booting...
Update: I can now reach point 7 but now won't do dload (3 buttons) method... Huawei logo all the time. Can't even turn off the phone
In my other thread you post the same problem but is not entirely the same..
You succeeded to enter on fastboot mode? Flash recovery?
If you follow the steps 1-5 is impossible to fail the 6 point..
You have acces on fastboot mode or not?..
Therand said:
In my other thread you post the same problem but is not entirely the same..
You succeeded to enter on fastboot mode? Flash recovery?
If you follow the steps 1-5 is impossible to fail the 6 point..
You have acces on fastboot mode or not?..
Click to expand...
Click to collapse
I did update the post... 3 hours ago I wasn't able to enter TWRP, some way I did managed, now I can enter fastboot, I did flash custOEM (sorry I don't remember exactly the name but it's the one of your post) .zip file. Now I can't do dload method, stuck on huawei logo. If I try to go to recovery, I got red message "phone fail validation"...
I know, I post on both but I was trying to do everything...
just tried... validation red error message won't let me go to TWRP now...
You have a VNS-L31C432?
Your phone does not enter at dload mode?
Wipe all partitions an retry flash a oeminfo for your model phone (if not C432 you need right oeminfo).
Therand said:
You have a VNS-L31C432?
Your phone does not enter at dload mode?
Wipe all partitions an retry flash a oeminfo for your model phone (if not C432 you need right oeminfo).
Click to expand...
Click to collapse
How can I wipe all partitions if stuck in Huawei logo? Is there a way to do everything from adb command line? (I'm using Mac and cannot use all the tools I've found here XDA neither hiSuite which is basically a backup photo/video only the Mac version).
Thank for helping, really appreciate
To answer your question in the other thread, yes bootloader is unlocked and I am on C432.
What's your rom have before the bootloop?
You have the right version of TWRP for your rom?
If you have a MM version Don't flash a TWRP for N.
Send me a link to TWRP version used (thread forum)
Therand said:
What's your rom have before the bootloop?
You have the right version of TWRP for your rom?
If you have a MM version Don't flash a TWRP for N.
Send me a link to TWRP version used (thread forum)
Click to expand...
Click to collapse
Before the bootloop I was on L31C900 (on the phone) but I did actually flashed C432B160 because I did rollback. TWRP used I've found in the other post where there's a OEMfile to flash (but for this I need to double check because I did look so many pages which I am not 100% sure.
I not have experience on other model that C435.
But i suggest to find a oeminfo for your variant (C900?)
For TWRP you need flash a version for MarshMallow HERE
Flash it and pas return here (fastboot flash return and first enter to new recovery)
Hi, found Windows emulator for MacOs so I extract from update.app boot.img and flash.
I did format all partitions as told using a proper twrp this time.
What's next step, system says NO OS INSTALLED?
islandman75 said:
Hi, found Windows emulator for MacOs so I extract from update.app boot.img and flash.
I did format all partitions as told using a proper twrp this time.
What's next step, system says NO OS INSTALLED?
Click to expand...
Click to collapse
Flash partitions on .img files is not needed.
Just find a corect oeminfo for your model phone.
Flash it on TWRP recovery.
Use dload methode to update on basical version (MarshMallow b160).
After that, unlock bootloader again and make a factory reset.
Switch on your phone (the first boot make long time).
Update on last emui on OTA.
Done!
After that you able to install a custom rom.
Therand said:
Flash partitions on .img files is not needed.
Just find a corect oeminfo for your model phone.
Flash it on TWRP recovery.
Use dload methode to update on basical version (MarshMallow b160).
After that, unlock bootloader again and make a factory reset.
Switch on your phone (the first boot make long time).
Update on last emui on OTA.
Done!
After that you able to install a custom rom.
Click to expand...
Click to collapse
Done!
Thanks again you're saving my life!
IT won't turn off so been always on it won't keep the charge... Writing so because apparently it won't go to download mode (dload) if plugged in. On the other way if I unplugged from power it won't even start. Shall I force to download mode using console ADB or FASTBOOT? I had looked but can't find anything...
islandman75 said:
Done!
Thanks again you're saving my life!
IT won't turn off so been always on it won't keep the charge... Writing so because apparently it won't go to download mode (dload) if plugged in. On the other way if I unplugged from power it won't even start. Shall I force to download mode using console ADB or FASTBOOT? I had looked but can't find anything...
Click to expand...
Click to collapse
I not understand.
You not able to switch on your phone without connected charger?
Therand said:
I not understand.
You not able to switch on your phone without connected charger?
Click to expand...
Click to collapse
Correct. Because I'm not able to switch it off it won't keep the charge. When discharged, the minute I do plug on charge it wakes up... That's the loop...
My main question is: does a command exist to enter download mode using terminal?
islandman75 said:
Correct. Because I'm not able to switch it off it won't keep the charge. When discharged, the minute I do plug on charge it wakes up... That's the loop...
My main question is: does a command exist to enter download mode using terminal?
Click to expand...
Click to collapse
You have a hardware bug?
No abd command to enter dload mode..
Try flash a update.zip with twrp (not guaranted)
After that unlock bootloader again and make factory reset.
Therand said:
You have a hardware bug?
No abd command to enter dload mode..
Try flash a update.zip with twrp (not guaranted)
After that unlock bootloader again and make factory reset.
Click to expand...
Click to collapse
I'll try. Thank you
Hi, I followed this guide to go back to stock from elite rom. I flashed my oeminfo.img on twrp and then went to dload combination. Do I have to unlock the bootloader after the reboot? Thanks!
Hi,
I followed your guide and it works perfectly thanks!

(Help) My P8 Lite 2017 (PRA-LX1) is bricked

Hello,
I was trying to install a custom ROM from TWRP to my P8 Lite 2017 and I wiped all partitions except MicroSD.
The installation failed and I got the stock ROM and then I discovered that my bootloader is locked. I can access TWRP and when I flashed the stock ROM the phone just boots to TWRP Recovery. And I can't even unlock the bootloader because the phone doesn‘t have any OS and I can‘t enable OEM unlocking from the system settings. And because I have TWRP, I can’t access Huawei Recovery. So my phone is basically bricked.
Any help will be appreciated
luigifan3 said:
Hello,
I was trying to install a custom ROM from TWRP to my P8 Lite 2017 and I wiped all partitions except MicroSD.
The installation failed and I got the stock ROM and then I discovered that my bootloader is locked. I can access TWRP and when I flashed the stock ROM the phone just boots to TWRP Recovery. And I can't even unlock the bootloader because the phone doesn‘t have any OS and I can‘t enable OEM unlocking from the system settings. And because I have TWRP, I can’t access Huawei Recovery. So my phone is basically bricked.
Any help will be appreciated
Click to expand...
Click to collapse
Use dload with a service firmware.
You need to flash this 2 times,once for the firmware and second time for vendor,and the firmware UPDATE.APP can be found in the update_sd.zip and the vendor UPDATE.APP can be found in the PRA-L31 or PRA-L11 folders (most likely you will have PRA-L31,you can find this in the engineering menu by going into the dialer and typing this: *#*#2846579#*#*,and then going to Veneer Informations and Version Info,but since you cannot boot flash PRA-L31 vendor).
http://androidhost.ru/6uc - this is latest firmware,but takes a very very long time to download
https://mega.nz/#F!nwhAWDjC!cNovAN6dKLlO_YZ9fjMbzQ - this is the first official firmware released,but download speed is very good
If you don't know how to use dload you can look it up on forums.
If your phone is really hard bricked and can't do anything, check this out:
I know how to use dload, but how I can boot into dload mode with TWRP installed and bootloader locked?
luigifan3 said:
I know how to use dload, but how I can boot into dload mode with TWRP installed and bootloader locked?
Click to expand...
Click to collapse
Dload works no matter what,at least I was able to enter it when I bricked my phone,even when I completely screwed up my recovery partition,so you should be good. Try using it with the service firmware I left you.
dinoderda said:
Dload works no matter what,at least I was able to enter it when I bricked my phone,even when I completely screwed up my recovery partition,so you should be good. Try using it with the service firmware I left you.
Click to expand...
Click to collapse
Now I have downloaded the service firmware so how I am going to flash it now? Like do I extract the UPDATE.APP and flash it in TWRP or what? You said that flash UPDATE.APP, but am I going to do that in dload mode or TWRP?
luigifan3 said:
Now I have downloaded the service firmware so how I am going to flash it now? Like do I extract the UPDATE.APP and flash it in TWRP or what? You said that flash UPDATE.APP, but am I going to do that in dload mode or TWRP?
Click to expand...
Click to collapse
In dload,make sure you make a folder in the root of your sdcard called dload and put that in there.
dinoderda said:
In dload,make sure you make a folder in the root of your sdcard called dload and put that in there.
Click to expand...
Click to collapse
Now I have the UPDATE.APP in my dload folder, but how I boot to the dload mode now?
luigifan3 said:
Now I have the UPDATE.APP in my dload folder, but how I boot to the dload mode now?
Click to expand...
Click to collapse
Volume Up + Volume Down + Power Button.
dinoderda said:
Volume Up + Volume Down + Power Button.
Click to expand...
Click to collapse
I tried that, it just boots into TWRP
EDIT: I got to dload, but it says software installation failed
luigifan3 said:
I tried that, it just boots into TWRP
EDIT: I got to dload, but it says software installation failed
Click to expand...
Click to collapse
Hm,make sure you used the service firmware I left you,but if you are sure you did,your last resort is DC Phoenix which you will need to pay 20 euros.
luigifan3 said:
Hello,
I was trying to install a custom ROM from TWRP to my P8 Lite 2017 and I wiped all partitions except MicroSD.
The installation failed and I got the stock ROM and then I discovered that my bootloader is locked. I can access TWRP and when I flashed the stock ROM the phone just boots to TWRP Recovery. And I can't even unlock the bootloader because the phone doesn‘t have any OS and I can‘t enable OEM unlocking from the system settings. And because I have TWRP, I can’t access Huawei Recovery. So my phone is basically bricked.
Any help will be appreciated
Click to expand...
Click to collapse
if you have TWRP installed could you make a backup of your oeminfo partition so we could provide you the right firmware to recover your device
RAR1991 said:
if you have TWRP installed could you make a backup of your oeminfo partition so we could provide you the right firmware to recover your device
Click to expand...
Click to collapse
Ok, but does it provide the right info if I have flashed different oeminfo.img?
dinoderda said:
Hm,make sure you used the service firmware I left you,but if you are sure you did,your last resort is DC Phoenix which you will need to pay 20 euros.
Click to expand...
Click to collapse
I've tried a different firmware for my device and now I can't get to dload anymore so does it mean that I've chosen the wrong firmware? And by the way I read somewhere that if the dload says error it can depend on the microsd card.
I tried it again with the service firmware and I got to dload and it didn't have error anymore and now I've got everything worked and my phone is unbricked
luigifan3 said:
I tried it again with the service firmware and I got to dload and it didn't have error anymore and now I've got everything worked and my phone is unbricked
Click to expand...
Click to collapse
great
I was stuck with a similar problem. Device bricked and flashing TWRP and restoring backups, then stock recovery and stock roms, but nothing worked until I found this post. Thanks a lot dinoderda for your help.
dinoderda said:
Use dload with a service firmware.
You need to flash this 2 times,once for the firmware and second time for vendor,and the firmware UPDATE.APP can be found in the update_sd.zip and the vendor UPDATE.APP can be found in the PRA-L31 or PRA-L11 folders (most likely you will have PRA-L31,you can find this in the engineering menu by going into the dialer and typing this: *#*#2846579#*#*,and then going to Veneer Informations and Version Info,but since you cannot boot flash PRA-L31 vendor).
http://androidhost.ru/6uc - this is latest firmware,but takes a very very long time to download
https://mega.nz/#F!nwhAWDjC!cNovAN6dKLlO_YZ9fjMbzQ - this is the first official firmware released,but download speed is very good
If you don't know how to use dload you can look it up on forums.
Click to expand...
Click to collapse
Hello again, I've been using the older service firmware for few months now and now I decided to install the latest service firmware after I had no success with flashing the firmware through TWRP and I downloaded the service firmware put the necessary files to the dload folder and installed it via the software update in the dialer and typing *#*#2846579#*#* and going to dload that way. It installed to 100% and then when it restarted it goes to Error Mode and it says to update the firmware again but it just loops to error mode and I cannot do anything so I think I accidentally removed some neccessary files in the dload folder but now I would need to fix the error mode loop.

Go back to stock rom

Hi,
I've installed a custom rom, but now i can´t install updates, Pie for example.
How can i unroot and go back to stock rom?
Thanks
aalmeida1972 said:
Hi,
I've installed a custom rom, but now i can´t install updates, Pie for example.
How can i unroot and go back to stock rom?
Thanks
Click to expand...
Click to collapse
I'd suggest HurUpdater: https://forum.xda-developers.com/ho...h-official-firmware-recovery-t3769279/page111
OTAs do work with an unlocked bootloader, but not with root or custom kernels.
Does this works with the P10? In the post i ddin´t found the P10.
And if it works, wich zip file i have to choose? And i have root
Thanks
Try my guide (Tutorial #2, Oreo to Oreo)
After that do a factory reset with eRecovery (boot with Vol+ and connected USB).
What also should work is flashing the system.img manually via fastboot.
For this extract the system.img from the correct firmware version with Huawei Update Extractor.
Connect your phone to your PC, boot into fastboot and flash with "fastboot flash system PATH\TO\SYSTEM.IMG".
After that do a factory reset with eRecovery (boot with Vol+ and connected USB).
Note for the next time: backup your system partition via TWRP before flashing the custom rom.
Also note that a factory reset is needed, without your phone won't boot, so backup your personal data before doing it.
aalmeida1972 said:
Does this works with the P10? In the post i ddin´t found the P10.
And if it works, wich zip file i have to choose? And i have root
Thanks
Click to expand...
Click to collapse
Yes, it works on the P10. You can download the files with the firmware finder app. I'd recommend the newest oreo version for your customisation (e.g. B382 for C432).
But Jannomag's solution should work equally well.
Wich Jannomag´s thread?
Do you have the link, please?
Thanks
aalmeida1972 said:
Wich Jannomag´s thread?
Do you have the link, please?
Thanks
Click to expand...
Click to collapse
The fourth message in this thread
I am sorry, maybe i am just dumb but i can't find it
I followed the guide but know i am i an bootloop. I get the message "your device has failed verification and may not work properly"
It restarded, but as D188-L29!!! I download the VTR-L29 on https://pro-teammt.ru/firmware-database/?firmware_model=VTR-L29C432&firmware_page=0
Now i can't update or nothing
aalmeida1972 said:
It restarded, but as D188-L29!!! I download the VTR-L29 on https://pro-teammt.ru/firmware-database/?firmware_model=VTR-L29C432&firmware_page=0
Now i can't update or nothing
Click to expand...
Click to collapse
Possibly you renamed the wrong customisation file (i did it once for the 09 while I needed the 29).
Which one did you download? And did you flash manually or did you use my script?
Download my oeminfo, it's from VTR-L29C432 Version 8.0.0.380, while the version doesn't really matter.
Flash it via TWRP using "Install" and "Use Image". Flash it to oeminfo partition. Then do my update script again.
I followed the guide to do Oreo to Oreo - basically wanting to get from custom Rom (fRomFuture B370) back to stock, so I chose the same firmware version to extract. Flashed everything with the script and it went fine and it boots and works.. but
The resolution seems to be off, too low and the right side of the screen is unresponsive to touch (about 1cm )
EDIT- Rolled back to fRomFuture B370 for now - need to find a way to get back to stock, as want to move on to Openkirin ROM instead
HI, i have a vtr-l29 root, i want to unroot(version oreo), how do i do it? what do i need to flash?. thank you Alex

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