Database Develop

Need help to downgrade from Nougat to Stock Rom

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 ?

Messed up root attempt, now without camera themes and basicly all stock huawei apps.

So i messed up root, now im without huawei stock apps.
What i tried: TWRP flash update.zip, update_full_EVA-L09_hw_eu.zip
dload failing with message: Cant update software or something like that
I am on EVA-L09C432B391
Can someone help me? Who can help me succesfully gonna get some paypal as Thanks.

bend3Rko said:
So i messed up root, now im without huawei stock apps.
What i tried: TWRP flash update.zip, update_full_EVA-L09_hw_eu.zip
dload failing with message: Cant update software or something like that
I am on EVA-L09C432B391
Can someone help me? Who can help me succesfully gonna get some paypal as Thanks.
Click to expand...
Click to collapse
If you updated from b386 to b391 by OTA, you should have had all apps.
For rooting b391 with SuperSU, the following method should apply (still not affecting Camera app and so):
https://forum.xda-developers.com/p9/development/root-supersu-2-81-emui-5-t3612258
and by using TWRP for Nougat: https://forum.xda-developers.com/p9/development/twrp-t3565703
Did you make complete Nandroid backup before rooting - if you did, you can simply restore everything
If you restore boot and recovery partitions to stock (you can extract them from b391 as downloaded by FirmwareFinder, by using Huawei Update Extractor), you should be able to rollback via c900b300 to c432b182, and therefrom OTA will bring you to clean b383->b386->b391.

bend3Rko said:
So i messed up root, now im without huawei stock apps.
What i tried: TWRP flash update.zip, update_full_EVA-L09_hw_eu.zip
dload failing with message: Cant update software or something like that
I am on EVA-L09C432B391
Can someone help me? Who can help me succesfully gonna get some paypal as Thanks.
Click to expand...
Click to collapse
You can install update.zip and update_full_EVA-L09_hw_eu.zip via TWRP, then it should work

[SOLVED] EVA-L19 "Software Install Failed" when updating

Hi everyone,
Just taking my chances if anyone in here encountered the same issue. I'm currently on EVA-L19C636B381 and the System Updater is asking me to update to B390. However, I've tried downloading the update several times but keep on getting the "Software Install Failed" error message. Any ideas on how I can update the firmware and ensure that updates will be installed seamlessly moving forward?
Note that the bootloader was unlocked before and it used to have TWRP. Now I've relocked the bootloader and installed the stock recovery.
Thanks!
Clarification:
Version: EVA-L19C636B381 (everything's stock: BOOT, RECOVERY, RECOVERY2, SYSTEM)
Would like to update to: B390
Issue: Getting "Software install failed" error message after downloading through System Update
** Used to have TWRP and root. Flashed stock IMGs
Update:
Issue solved! Please see last post for the update/solution.

thedarkinvader said:
Hi everyone,
Just taking my chances if anyone in here encountered the same issue. I'm currently on EVA-L19C636B381 and the System Updater is asking me to update to B390. However, I've tried downloading the update several times but keep on getting the "Software Install Failed" error message. Any ideas on how I can update the firmware and ensure that updates will be installed seamlessly moving forward?
Note that the bootloader was unlocked before and it used to have TWRP. Now I've relocked the bootloader and installed the stock recovery.
Thanks!
Click to expand...
Click to collapse
If you had TWRP, maybe you also rooted - root will also block OTA (you had to unroot in that case).
Btw, unlocked bootloader does not prevent/affect OTA

zgfg said:
If you had TWRP, maybe you also rooted - root will also block OTA (you had to unroot in that case).
Btw, unlocked bootloader does not prevent/affect OTA
Click to expand...
Click to collapse
Hi zgfg!
Thanks for the response. Yeah, if I'm not mistaken, it used to be rooted. However, I've installed stock B381 and stock recovery already, and still getting the error message. Checked with Root Checker and it says that there's no root access.

thedarkinvader said:
Hi zgfg!
Thanks for the response. Yeah, if I'm not mistaken, it used to be rooted. However, I've installed stock B381 and stock recovery already, and still getting the error message. Checked with Root Checker and it says that there's no root access.
Click to expand...
Click to collapse
Rooting affects Boot partition, it must be flashed back to stock. And it's recommended to Hard reset then, before OTA. For OTA, go to Settings, and choose Full upgrade

zgfg said:
Rooting affects Boot partition, it must be flashed back to stock. And it's recommended to Hard reset then, before OTA. For OTA, go to Settings, and choose Full upgrade
Click to expand...
Click to collapse
Yeah, that's what I did. Basically, everything's stock already. That's why I don't understand why I'm still getting the error message.

You can try downloading the full stock rom package and manually update with the dload method.

noalt said:
You can try downloading the full stock rom package and manually update with the dload method.
Click to expand...
Click to collapse
Hi noalt! Thanks for the response.
Yeah, kinda wondering if that'll work. For the dload method, does it really require an SD card? Also, for the dload method, it is okay to get the latest full package instead? (Upon checking using Firmware Finder, the latest one is B395 or B396)

Any steps that I can follow to do a sort of "clean install"? As in free of any modifications? In short, some kind of steps as alternative for using System Update (which I can't use due to the error message I'm getting)?

You can use any stock rom you like. If it is the same or higher build, you may not need to do a rollback. The dload method only works from sd-card. It will be a clean install.
I think the dload method is the safest. Alternatives are flashing images indiviually through fastboot but I have no experience with that, except for the recovery.img

noalt said:
You can use any stock rom you like. If it is the same or higher build, you may not need to do a rollback. The dload method only works from sd-card. It will be a clean install.
I think the dload method is the safest. Alternatives are flashing images indiviually through fastboot but I have no experience with that, except for the recovery.img
Click to expand...
Click to collapse
I see. Regarding the dload method, if by sd-card you're referring to the internal memory, I'm afraid I've tried that (creating a dload folder and putting nothing else but the UPDATE.APP file inside) and I'm getting a Software Install Failed error message as well. :crying:

No, I mean a micro sd card. You can put one in the tray next to your sim card. And then you have to shut down you phone and boot it holding vol+ vol- and power until you get into the updater.

noalt said:
No, I mean a micro sd card. You can put one in the tray next to your sim card. And then you have to shut down you phone and boot it holding vol+ vol- and power until you get into the updater.
Click to expand...
Click to collapse
Ah yes, that's the one that I have yet to try (as I don't have an SD card, the other spare phone that I have is a 5s).

UPDATE:
I eventually was able to install EVA-L19C363B395!
Initially, I was having issues with the partitions (as I tinkered around a bit with TWRP) and was stuck with the Huawei logo and not proceeding with the booting. So what I did was I flashed BOOT.img, SYSTEM.img, RECOVERY.img, and RECOVERY2.img from the stock B381 (use the Huawei Update Extractor to get it from the UPDATE.APP file from the update.zip (the large file), do some Googling to find it here in XDA . Then I was still experiencing the said issue so I used the stock recovery's features: "Wipe data/factory reset" and "Wipe cache partition" to sort of repair the issues with the partitions (didn't know how to properly do it in TWRP.
Then B381 booted and was able to access USB debugging (initially had issues with this as well, after flashing images, Settings app kept on crashing when trying to access Security and Developer options).
And then finally followed the HWOTA procedure made by @Atarii. Make sure that you're going to use the proper recovery file for your version (L09, L19, etc). According to the steps, being rooted is also required so I used @zgfg's SuperSU 2.82 permissive (https://mega.nz/#F!w41RmZKB!IG53JadhjUKgFK8anbctIw). Make sure to flash it before flashing the nocheck recovery file.
And voila! That should do it. Based on what I'm seeing, root has been removed after doing the HWOTA procedure, same goes for TWRP, and bootloader's locked again.
Thanks to all of those who responded and credit goes to @Atarii and @zgfg for the procedure and file/link.

Manual update rooted P10?

Hello,
Some weeks ago I have rooted my P10 with magisk (and twrp as recovery). Now I hot update Infos for new fw B371 (C432). Ota update won't work so I downloaded full Ota with huawei firmware finder. After download phone restarts but no update. It boots to recovery. Do I have to install the update files manually or isn't an update possible.
Thanks

painkiller_one said:
Hello,
Some weeks ago I have rooted my P10 with magisk (and twrp as recovery). Now I hot update Infos for new fw B371 (C432). Ota update won't work so I downloaded full Ota with huawei firmware finder. After download phone restarts but no update. It boots to recovery. Do I have to install the update files manually or isn't an update possible.
Thanks
Click to expand...
Click to collapse
Just flash a stock oreo recovery, and you should be fine.

Use my guide. Tutorial #3 is the right one.
https://forum.xda-developers.com/p10/how-to/guide-manual-updgrade-to-update-oreo-t3758286

Thanks. So root will be undone with this process? After this I can easily install twrp and magisk again without any problems?
Edit: Testet this, but install of officialupdate.zip failed (put the directory in /cust - boot into TWRP, mount cust and tried to install officialupdate.zip). Install from sdcard won´t work too.

Anyone has a solution to fix this. Removed root but it won't work.

Please post the TWRP log after trying to install officialupdate.zip. I need to know, what's failing so I'm able to help you out.

Jannomag said:
Please post the TWRP log after trying to install officialupdate.zip. I need to know, what's failing so I'm able to help you out.
Click to expand...
Click to collapse
Tried the root method (install from /cust directory) but again error. And here is the log from TWRP:
https://pastebin.com/1EL41MV5
Hope it is ok with pastebin link?
Thanx

painkiller_one said:
Tried the root method (install from /cust directory) but again error. And here is the log from TWRP:
https://pastebin.com/1EL41MV5
Hope it is ok with pastebin link?
Thanx
Click to expand...
Click to collapse
Okay, I can't figure it out, the log says error in line 141 in my script. I tried this on my phone and there's no such error.
What this script does is quiet simple - it just flashes a modified EMUI recovery, where the file and online check are disabled. So, you can flash the recovery from the archive manually via fastboot with "fastboot flash recovery_ramdisk PATH\TO\RECOVERY.IMG".
Then restart and do the update via Settings or FF.
After this you need to reroot, so reinstall TWRP and Magisk / SuperSU.

Jannomag said:
Okay, I can't figure it out, the log says error in line 141 in my script. I tried this on my phone and there's no such error.
What this script does is quiet simple - it just flashes a modified EMUI recovery, where the file and online check are disabled. So, you can flash the recovery from the archive manually via fastboot with "fastboot flash recovery_ramdisk PATH\TO\RECOVERY.IMG".
Then restart and do the update via Settings or FF.
After this you need to reroot, so reinstall TWRP and Magisk / SuperSU.
Click to expand...
Click to collapse
Ok thanks for looking. Don´t know why it won´t work. Device was simply rooted with TWRP + Magisk. Ok will try out manual way. Wiht Archive you mean this: https://forum.xda-developers.com/p10/development/recovery-p10-vtr-l09-t3782163 ?

painkiller_one said:
Ok thanks for looking. Don´t know why it won´t work. Device was simply rooted with TWRP + Magisk. Ok will try out manual way. Wiht Archive you mean this: https://forum.xda-developers.com/p10/development/recovery-p10-vtr-l09-t3782163 ?
Click to expand...
Click to collapse
No, my officialupdate rar achive, it contains the zip for TWRP and a recovery IMG file. This is the right one.

OK then you mean the VTR_RECOVERY_OREO-NoCheck.img. I will check this. Thanks

Jannomag said:
No, my officialupdate rar achive, it contains the zip for TWRP and a recovery IMG file. This is the right one.
Click to expand...
Click to collapse
Update worked only via Firmware Finder. But all is fine now. Reinstalled TWRP and magisk (no data loss) and all is working. Thanks for your help.

painkiller_one said:
Update worked only via Firmware Finder. But all is fine now. Reinstalled TWRP and magisk (no data loss) and all is working. Thanks for your help.
Click to expand...
Click to collapse
Would you mind sharing the steps you took to make it work?
I'm travelling abroad and keep getting the update reminder, and I'm too afraid to get an unusable phone to try anything

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