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 ?

Breaking phone after downgrade from 7 to 6 (dead phones)

Hello
I'm serious problem and need help
I bootloader unlock the phone and gave the phone to Android 7 Upgrade (https://forum.xda-developers.com/honor-5c/development/honor7lite5cnem-l21hweuemui5-0beta-t3561536)
After the recovery "RevolutionRecovery_Nougat_P9Lite_RC2_16-03-17" Flash Rom "MM + Kang_full_3.0_B380"
Now I can not run anything flash recovery, only access to recovery. "RevolutionRecovery"
At the same error recovery "failed to mount '/ cust' (invalid argument)"
And not from the "mount" will also enable it
Logo stuck on the boot loader and the solution does not mind
Please tell me if the solution is
(If you do not have a problem I can add image)

what you mean RevolutionRecovery_Nougat_P9Lite_RC2_16-03-17? you installed p9's recovery?

MHN.1515 said:
Hello
I'm serious problem and need help
I bootloader unlock the phone and gave the phone to Android 7 Upgrade (https://forum.xda-developers.com/honor-5c/development/honor7lite5cnem-l21hweuemui5-0beta-t3561536)
After the recovery "RevolutionRecovery_Nougat_P9Lite_RC2_16-03-17" Flash Rom "MM + Kang_full_3.0_B380"
Now I can not run anything flash recovery, only access to recovery. "RevolutionRecovery"
At the same error recovery "failed to mount '/ cust' (invalid argument)"
And not from the "mount" will also enable it
Logo stuck on the boot loader and the solution does not mind
Please tell me if the solution is
(If you do not have a problem I can add image)
Click to expand...
Click to collapse
Try to flash Meticulus twrp zip using revolution recovery, since u said that the only recovery u got access right now.

thelous said:
what you mean RevolutionRecovery_Nougat_P9Lite_RC2_16-03-17? you installed p9's recovery?
Click to expand...
Click to collapse
This works fine, the problem is now I was 6 after installing the Android ROM

Shubho20 said:
Try to flash Meticulus twrp zip using revolution recovery, since u said that the only recovery u got access right now.
Click to expand...
Click to collapse
I installed the recovery through ADB
But the recovery will not enter
See the photos
The first photo on the left side of the page that was stuck

MHN.1515 said:
I installed the recovery through ADB
But the recovery will not enter
See the photos
The first photo on the left side of the page that was stuck
Click to expand...
Click to collapse
Tried dload method using full update EMUI 4.1, i.e., three button method?

Shubho20 said:
Tried dload method using full update EMUI 4.1, i.e., three button method?
Click to expand...
Click to collapse
I tested
:crying:

MHN.1515 said:
I tested
:crying:
Click to expand...
Click to collapse
Okay u need to go honor website for rollback instruction. There u will a get update .app. U need to put it in dload folder and then flash that by same method. After doing that u need to delete that dload folder and then put the full update in dload folder, then flash. And bang, u r in EMUI 4.1 I did tried it myself when rolling back to 4.1 from 5.0

Shubho20 said:
Okay u need to go honor website for rollback instruction. There u will a get update .app. U need to put it in dload folder and then flash that by same method. After doing that u need to delete that dload folder and then put the full update in dload folder, then flash. And bang, u r in EMUI 4.1 I did tried it myself when rolling back to 4.1 from 5.0
Click to expand...
Click to collapse
I also tried, but I'll try again
My mistake pressing "MM + Kang_full_3.0_B380" was (https://forum.xda-developers.com/ho...kang-emui-4-1-wbt-bta1-based-kangvip-t3447739 )
Do install this ROM is damaged? (In your opinion)

MHN.1515 said:
I also tried, but I'll try again
My mistake pressing "MM + Kang_full_3.0_B380" was (https://forum.xda-developers.com/ho...kang-emui-4-1-wbt-bta1-based-kangvip-t3447739 )
Do install this ROM is damaged? (In your opinion)
Click to expand...
Click to collapse
Bro that rom is for honor 7 not honor 5C

MHN.1515 said:
I also tried, but I'll try again
My mistake pressing "MM + Kang_full_3.0_B380" was (https://forum.xda-developers.com/ho...kang-emui-4-1-wbt-bta1-based-kangvip-t3447739 )
Do install this ROM is damaged? (In your opinion)
Click to expand...
Click to collapse
its not for honor 5c aka honor 7 lite.... did you make twrp backup before installing? i always do that and then theres no worries if you fail installion.

thelous said:
its not for honor 5c aka honor 7 lite.... did you make twrp backup before installing? i always do that and then theres no worries if you fail installion.
Click to expand...
Click to collapse
The problem was solved
GT3 is my phone
I've downloaded the firmware itself and through "dload" installed.
But I shall follow your advice, and I am preparing a backup :good:
thanks

MHN.1515 said:
The problem was solved
GT3 is my phone
I've downloaded the firmware itself and through "dload" installed.
But I shall follow your advice, and I am preparing a backup :good:
thanks
Click to expand...
Click to collapse
most safe way to flash stuff is to make backup always before flashing since you never know when zip is corrupted etc.... :good: good tht your device works again!

Flashable L09C432B378

Does anyone know how to flash untouched stock L09C432B378 with TWRP ?

You do need to have an unlocked bootloader, then you can enter fastboot mode and flash TWRP.
You can flash the full OTA again in case something goes wrong and this does also restore the bootloader lock.
Or do you mean to flash the firmware in TWRP?

christopherpfister said:
You do need to have an unlocked bootloader, then you can enter fastboot mode and flash TWRP.
You can flash the full OTA again in case something goes wrong and this does also restore the bootloader lock.
Or do you mean to flash the firmware in TWRP?
Click to expand...
Click to collapse
The phone has a material problem that need to be returned for service, I want to flash a full stock ROM with all the bloatware.
Could you point me to the full OTA download ?

lapocompris said:
The phone has a material problem that need to be returned for service, I want to flash a full stock ROM with all the bloatware.
Could you point me to the full OTA download ?
Click to expand...
Click to collapse
Here you can find any firmware for the EVA-L09 to download. You need to extract the content to a "dload"-folder on your sdcard and start the install by booting with Vol+ & Vol- pressed.

christopherpfister said:
Here you can find any firmware for the EVA-L09 to download. You need to extract the content to a "dload"-folder on your sdcard and start the install by booting with Vol+ & Vol- pressed.
Click to expand...
Click to collapse
I am currently on MaHo_66's ROM with TWRP, will this fail to flash ?

lapocompris said:
I am currently on MaHo_66's ROM with TWRP, will this fail to flash ?
Click to expand...
Click to collapse
No this should work in any state your device is in regarding what's installed/flashed except​ when your battery is low.
But consider that it will also restore recovery/boot partitions and the bootloader in general.

christopherpfister said:
No this should work in any state your device is in regarding what's installed/flashed except​ when your battery is low.
But consider that it will also restore recovery/boot partitions and the bootloader in general.
Click to expand...
Click to collapse
I downloaded the EVA-L09C432B378.zip and did as you said, but the installation failed (incompatible package)

lapocompris said:
I downloaded the EVA-L09C432B378.zip and did as you said, but the installation failed (incompatible package)
Click to expand...
Click to collapse
Are you sure you have extracted the contents of the zip to a folder called dload on the root of your sdcard and your battery is not low? You can also check the guides to this method in this forum.
It also depends on what firmware you are using now but if you already are on b378 it should definitely work fine.

christopherpfister said:
Are you sure you have extracted the contents of the zip to a folder called dload on the root of your sdcard and your battery is not low? You can also check the guides to this method in this forum.
It also depends on what firmware you are using now but if you already are on b378 it should definitely work fine.
Click to expand...
Click to collapse
Since my phone is unlocked and has TWRP, maybe that the problem.
So I flash oeminfo-huawei-p9-eval09-c432.zip, then the process work but upon reboot a lot of stock app are missing, including camera, folder and backup. And there is no keyboard.

I am not entirely sure but I think these are located on the /vendor partition. But I always thought that they were part of the full OTA. Maybe you can try to find and flash the stock vendor partition?
Sent from my Huawei P9 using XDA Labs

You'll have to flash update_full_hw_eu.zip as well.
Extract it and put that update.app in the dload folder. Where did you download firmware from?
Seems you must flash hw in twrp. no other way.
EVA-L09C432B378 FullOTA-MF: http://update.hicloud.com:8180/TDS/data/files/p3/s15/G753/g104/v75049/f1/full/update.zip
EVA-L09C432B378 update_full_hw_eu: http://update.hicloud.com:8180/TDS/...04/v75049/f1/full/hw/eu/update_full_hw_eu.zip
I don't think Public is needed, it contains no update.app anyway and would need to be flashed in TWRP.
christopherpfister said:
I am not entirely sure but I think these are located on the /vendor partition. But I always thought that they were part of the full OTA. Maybe you can try to find and flash the stock vendor partition?
Sent from my Huawei P9 using XDA Labs
Click to expand...
Click to collapse
It's downloaded separately when you update, but not with dload.

Honor 4x Che2-L11 (EU) - problem with baseband and IMEI.

Hi, I'm new to this forum.
I have a problem with my phone.
After rooting it was good, but later I wanted to upload another ROM and confused the versions to the Snapdragon processor than HiSilicon and now I don't have a baseband and IMEI.
I have tried the original 6.0, 5.1 trough adb-fastboot, because I can't restore trough dload, I had message 'Install software failed' and nothing helps.
Do you have any ideas?

moczu17 said:
Hi, I'm new to this forum.
I have a problem with my phone.
After rooting it was good, but later I wanted to upload another ROM and confused the versions to the Snapdragon processor than HiSilicon and now I don't have a baseband and IMEI.
I have tried the original 6.0, 5.1 trough adb-fastboot, because I can't restore trough dload, I had message 'Install software failed' and nothing helps.
Do you have any ideas?
Click to expand...
Click to collapse
I don't know, but maybe @MarcoPLs or @panchovix has an idea? Sorry to quote you guys, but this is a quite important question: What if someone flashes the wrong rom? Honor 4x can be confusing with snapdragon/kirin versions.

Bob1900 said:
I don't know, but maybe @MarcoPLs or @panchovix has an idea? Sorry to quote you guys, but this is a quite important question: What if someone flashes the wrong rom? Honor 4x can be confusing with snapdragon/kirin versions.
Click to expand...
Click to collapse
Flashing sd rom is 100% brick.
Try to use rollback package and then reflash lollipop. (you can also try to flash marshmallow with updateappflasher but i think it flash only stuff you need to boot)
http://www.hihonor.com/uk/support/details/index.html?DOC_ID=82283

moczu17 said:
Hi, I'm new to this forum.
I have a problem with my phone.
After rooting it was good, but later I wanted to upload another ROM and confused the versions to the Snapdragon processor than HiSilicon and now I don't have a baseband and IMEI.
I have tried the original 6.0, 5.1 trough adb-fastboot, because I can't restore trough dload, I had message 'Install software failed' and nothing helps.
Do you have any ideas?
Click to expand...
Click to collapse
If you can boot to TWRP use this method to install stock rom.
https://forum.xda-developers.com/honor-4x/how-to/install-emui-4-1-4x-4c-g-play-g-play-t3515702

keikari said:
If you can boot to TWRP use this method to install stock rom.
https://forum.xda-developers.com/honor-4x/how-to/install-emui-4-1-4x-4c-g-play-g-play-t3515702
Click to expand...
Click to collapse
I think using stock recovery is better for fixing bugs because it flash all partitions

MarcoPLs said:
I think using stock recovery is better for fixing bugs because it flash all partitions
Click to expand...
Click to collapse
If you install with that you can have easier access to use dload method.

MarcoPLs said:
I think using stock recovery is better for fixing bugs because it flash all partitions
Click to expand...
Click to collapse
I tried to use rollback, but always durning instalation from dload 'Instal software failed'...
I tried too method with TWRP, but durning instalation:
' unmounf of /system failed; no such volume
unmounf of /cust failed; no such volume
write radio image...
E:unknow command [errno]
Updater process ended with ERROR: 7 '.
I'm worried...

moczu17 said:
I tried to use rollback, but always durning instalation from dload 'Instal software failed'...
I tried too method with TWRP, but durning instalation:
' unmounf of /system failed; no such volume
unmounf of /cust failed; no such volume
write radio image...
E:unknow command [errno]
Updater process ended with ERROR: 7 '.
I'm worried...
Click to expand...
Click to collapse
Flash system and cust with fastboot and use twrp flasher again.
(rollback is not full update, you have formated system thats why it also failed)

MarcoPLs said:
Flash system and cust with fastboot and use twrp flasher again.
(rollback is not full update, you have formated system thats why it also failed)
Click to expand...
Click to collapse
OK, done, but I still can't install rollback and stock ROM.
Now I only have:
'write radio image...
E:unknow command [errno]
Updater process ended with ERROR: 7 '.

moczu17 said:
OK, done, but I still can't install rollback and stock ROM.
Now I only have:
'write radio image...
E:unknow command [errno]
Updater process ended with ERROR: 7 '.
Click to expand...
Click to collapse
unknow command is nornal.
im not sure what status 7 could be. you are not trying to flash rollback with twrp? with twrp you can only flash full roms

I tried flash rollback from dload, but failed.
I tried flash full stock rom MM b535 trough TWPR, but failed, so I don't know...
I must trying with other rom or meta-inf is wrong?

It works!
I extract META-INF in Huawei Multi-Tool and install rollback in TWRP, but I still didn't have baseband and IMEIs.
I flashed 6.0 B535 trough adb.
Extract from update.app and flash, flash, flash *.img.
Only full packages work, so thanks for Your help!

moczu17 said:
It works!
I extract META-INF in Huawei Multi-Tool and install rollback in TWRP, but I still didn't have baseband and IMEIs.
I flashed 6.0 B535 trough adb.
Extract from update.app and flash, flash, flash *.img.
Only full packages work, so thanks for Your help!
Click to expand...
Click to collapse
Have you restored your IMEI numbers or not?
If not flash stock ROM which you got with your device.

Yes, I have restored my IMEI.

moczu17 said:
Yes, I have restored my IMEI.
Click to expand...
Click to collapse
how did you get succeeded by flashing stock rom or any other?

moczu17 said:
Yes, I have restored my IMEI.
Click to expand...
Click to collapse
Can you let us know how you were able to solve this ?

I wrote, that I flashed rom 6.0 B535 trough adb.
I extracted file update.app in huawei extractor and manually flashed images.
Only full packages work...

moczu17 said:
I wrote, that I flashed rom 6.0 B535 trough adb.
I extracted file update.app in huawei extractor and manually flashed images.
Only full packages work...
Click to expand...
Click to collapse
Ya,sure it is one of the best way to regain lost phone information.

moczu17 said:
I wrote, that I flashed rom 6.0 B535 trough adb.
I extracted file update.app in huawei extractor and manually flashed images.
Only full packages work...
Click to expand...
Click to collapse
Glad u sorted things on your own .hope to see u helping someone in future. Goodluck

moczu17 said:
I wrote, that I flashed rom 6.0 B535 trough adb.
I extracted file update.app in huawei extractor and manually flashed images.
Only full packages work...
Click to expand...
Click to collapse
please edit the title and write as [solved ] in front of the question

Help..trying to revert lineage os to stock emui

I need help

download full version EMUI.
unpack and copy to sdcard (dload)
flash stock recovery
and install (power button + vol+ and vol-.

O-ROM said:
download full version EMUI.
unpack and copy to sdcard (dload)
flash stock recovery
and install (power button + vol+ and vol-.
Click to expand...
Click to collapse
Hi..thanks for replying...can i know where i can get the stock recovery img?
Thanks

EVAL09C432B386 FULL Nandroid backup:
https://mega.nz/#!Oc4BiTCD!Xly_sGqDX8_A8MSGheluHp2bJF_NvBtwYFKD9HZKyOI

xtcislove said:
EVAL09C432B386 FULL Nandroid backup:
https://mega.nz/#!Oc4BiTCD!Xly_sGqDX8_A8MSGheluHp2bJF_NvBtwYFKD9HZKyOI
Click to expand...
Click to collapse
Thanks..but im looking for L19c636bxx

KhairulBahrin said:
Thanks..but im looking for L19c636bxx
Click to expand...
Click to collapse
Cant provide this.
Use rollback package and downgrade to MM firmware
Ota or dload to nougat

xtcislove said:
Cant provide this.
Use rollback package and downgrade to MM firmware
Ota or dload to nougat
Click to expand...
Click to collapse
How to restore using your package...power+volume up and down?

KhairulBahrin said:
How to restore using your package...power+volume up and down?
Click to expand...
Click to collapse
U can grab the rollback package from my signature, there is pdf file with instructions on how to use it. inside the zip file.
You have to use the same method for the mm firmware you like to rollback to.

​
xtcislove said:
U can grab the rollback package from my signature, there is pdf file with instructions on how to use it. inside the zip file.
You have to use the same method for the mm firmware you like to rollback to.
Click to expand...
Click to collapse
Ok tysm...ill try