Downgrade P10 Plus from Oreo to Nougat - needs Rollback Firmware - Huawei P10 Plus ROMs, Kernels, Recoveries, & Other

Hello Guys,
It's now possible to downgrade P10 Plus from Oreo to Nougat
Disclaimer: I'm not responsible what happens to your device or if you active some nuclear missiles in the process
Prerequisites:
Oreo Firmware on your P10 Plus
Nougat Firmware for P10 Plus
HWOTA 8 from mankindttw https://forum.xda-developers.com/mate-9/how-to/guide-mate-9-flash-oreo-update-package-t3699522
Rename the files according to this guide:
https://forum.xda-developers.com/mate-9/how-to/guide-mate-9-flash-update-package-t3593108
Access to fastboot and adb
Downgrade Nougat
A. Put update.zip, update_data_public.zip, and update_all_hw.zip files into HWOTA8 repack directory.
B. Run repack.bat to update zip files.
C. Go through "Flash Update" steps and use repacked zip files.
D. Enter recovery and do factory reset.
Flash Update
A. Use Vol-Dn + USB Cable to boot into fastboot mode.
B. Use Replace_Recovery.bat in HWOTA8 to flash TWRP recovery.
C. Disconnect USB cable, use Vol-Up + Power to boot into TWRP.
D. Create "HWOTA8" directory in MTP sdcard.
E. Put hwota8_update.zip, MHA_RECOVERY8_NoCheck.img, and three huawei update package (update.zip, update_data_public.zip, and update_all_hw.zip) files into "HWOTA8" directory.
F. TWRP install sdcard hwota8_update.zip, it will reboot and install update automatically.

Hi!
I got this message when I flash the repacked (L29C432B164) zips with HWOTA8: "Software install failed! - Failed to check the update files. - Please download the package again."
Whats wrong? I've followed these steps, but it failed.
When I put Oreo .311 zips without repacking, but renamed (tutorial) in the HWOTA8 directory on my sdcard and install [hwota8_update.zip] with twrp it installs normal incl. verify BUT there is no change. Everthing is like before.
On my P10 (normal), after a factory reset with .311 it's now on build no. 8.0.0.046(01BN).
I cant downgrade to nougat or update back to .311
What can I do? Any suggestions?

Downgrade work only with rollback firmware like B217
Gesendet von meinem VKY-AL00 mit Tapatalk

Ok, than I have to wait or is there another way to leave the 8.0.0.046(01BN)?

There is a rollback firmware on firmware finder.
Gesendet von meinem VKY-AL00 mit Tapatalk

Do I need to install the rollback with firmware finder, manually flashing the zips with twrp or with HWOTA?

Install the rollback firmware via proxy in FF

Oiphobie said:
Ok, than I have to wait or is there another way to leave the 8.0.0.046(01BN)?
Click to expand...
Click to collapse
can i know why you want to roll back to nougat from oreo ? are there bugs or something ?

How to fix error 9 ? check_write_data_to_pattion, write data error ?

Rommco05 said:
Can I only use rollback packages? Because this firmware contains only 2 zip files for L29. You personaly tested this way, I never use hwota hopefuly I dont brick my phone
Click to expand...
Click to collapse
I have done it only with rollback b217 and I think yes you need rollback packages

if i remove public with notepad, i get an error, if i don't remove it, install fail, any help

Source of firmware
may i ask where you got the firmwares

i get the rollback from FF, there is no other rolllback firmware for vtr-l29c636.

trigos9421 said:
i get the rollback from FF, there is no other rolllback firmware for vtr-l29c636.
Click to expand...
Click to collapse
Vtr is not vky therefore it's P10 not P10 Plus

Why I cant repack ?
Downgrade Nougat
A. Put update.zip, update_data_public.zip, and update_all_hw.zip files into HWOTA8 repack directory.
B. Run repack.bat to update zip files.
C. Go through "Flash Update" steps and use repacked zip files.
I run "repack.bat" from Windows 7 it says the 7zip.exe are not compactible, any suggestions ?
How the repacked zip files loock like? I have downloaded the C432 Roolback firmware from Firmware Finder, must I repack them to ?

Rommco05 said:
Rollback contains 3 zips, I think just 2
Click to expand...
Click to collapse
You didnt answer me on my Question

Becouse a lot of user dont understand and get confused I have made a new tutorial for Rollback from Oreo B321 C636 P10 plus, to Nougat VKY-L29 C432 B181 or other region like C185 or C636
BE CARREFULL AND READ THIS - Do exactly like this description and you will not fail
If you read 2 files , dont aske "can I use 3 files" , becouse there is writen 2 files
Also dont aske can I use "this" or "this" becouse you can only use this what is written and than you have no error.
For Rollback from Oreo B321 C636 P10 plus, to Nougat VKY-L29 C432 B181 or other region
like C185 or C636
What you need:
Access to fastboot and adb or Minimal ADB and Fastboot installed on computer( in root C: )
HWOTA8 from mankindttw https://forum.xda-developers.com/mat...ckage-t3699522
Nougat Rollback Firmware for P10 Plus
I used this firmware becouse I have a 432 model:
VKY-L29C432B181 ( its a rollback for C432 on FirmwareFinder ) only 2 zips or
VKY-L29C432B185 ( its a new rollback for C432 on FirmwareFinder will lock bootloader ) only 2 zips
update_full_VKY-L29_hw_eu.zip and update.zip
Extract the downloaded HWOTA8_2017110501.zip to C: on Computer
Now Create "HWOTA8" folder in EXTERNAL sdcard, in this folder put only
from the extracted HWOTA8_2017110501.zip this 1 file:
MHA_RECOVERY8_NoCheck.img
also this 2 files from downloaded firmware:
update.zip - dont rename
update_full_VKY-L29_hw_eu.zip - rename to - update_all_hw.zip
for VKY-L09 instead of update_full_VKY-L29_hw_eu.zip you download the update_full_VKY-L09_hw_eu.zip and rename as abow described
and this moded - hwota8_update2.zip ( downloaded here as atached file )
It is moded so you need only 2 firmware files for Rollback and NO need to Run repack.bat to update zip files.
SO LETS GO
ON PHONE Use Vol-Dn + USB Cable to boot into fastboot mode.
flash TWRP8_3.0.3.img > comand: fastboot flash recovery_ramdisk TWRP8_3.0.3.img
we use this TWRP becouse it is in HWOTA8 ectracted folder
Boot into TWRP and install from external sdcard hwota8_update2.zip, it will reboot and install update automatically.
After reboot you have Nougat B181 or B185 ( depend what you chose ) on VKY-L29C432
Thats How I did it in 15 minutes
Yes If you have another model not C432 you must download the 2 firmware files for your model region
I'm not responsible for any bricks.
If you fail you didnt follow exatly the tutorial
Reading is the Mother of Knowlege.

Woow Great Thank you
Like This Video

MHA_RECOVERY8_NoCheck.img file is fo Mate 9. It is the reason of my hard bricked Mate 9 Pro. It even doesn't support Mate 9 Pro; how can you think that it will fix your case?
Just try rollback otherwise wait for Official release of Oreo.

This worked fine for me,it took just over 10 mins and I'm back on nougat. I'd previously been on stock Oreo (rooted) and treble (I have a p10 plus VKYL29)

Related

[GUIDE] UNIFIED HELP THREAD [UNBRICK/ROOT/FAQ] FOR P9 Lite

UNIFIED HELP THREAD, VIEW IN BROWSER
TABLE OF CONTENTS
1. STOCK EMUI 4.1
2. STOCK EMUI 5
3. STOCK BASED ROMS
4. THIRD PARTY ROMS AND KERNELS
5. UNBRICKING/DOWNGRADING/SWITCHING ROMS
6. ROOTING AND RECOVERY
7. OTHER USEFUL INFO/TOOLS
8. TWEAKS AND MODS
9. RESERVED
Like=Helpful so spam that button
​
XDA:DevDB Information
UNIFIED HELP THREAD FOR HUAWEI P9 LITE (Hi6250), Tool/Utility for the Huawei P9 Lite
Contributors
dariomrk, @k1ll3r8e, @OldDroid, @Potato997
Version Information
Status: Stable
Created 2017-07-31
Last Updated 2017-09-07
1.
EMUI 4.1 ​About: E•Motion•User•Interface 4.1 is based on Android 6.0 Marshmallow
Versions
For:
VNS-L21
C432•B160 full UPDATE.APP •dload•
VNS-L31
C432•B160 full UPDATE.APP •dload•
Note: To flash these refere to post number 5.;
If you need a firmware not listed here, download Firmware Finder from post 7 and search for it.
Rooting and recovery
Refere to post number 6.
Compatibility
Marshmallow EMUI is compatible with:
•Meticulus sourced ROM-s and recovery•
•Updating to EMUI 5•
@simo255 •MedroM•
@jsbeyond •Slim ROM•
@The Marionette •AICP•
@jsbeyond •Resurrection Remix•
2.
EMUI 5 ​About: E•Motion•User•Interface 5 is based on Android 7.0 Nougat
Versions
For:
VNS-L21
C432•B370 full UPDATE.APP •dload•
VNS-L31
C432•B370 full UPDATE.APP •dload•
Note: To flash these refere to post number 5.;
If you need a firmware not listed here, download Firmware Finder from post 7 and search for it
Rooting and recovery
Refere to post number 6.
Compatibility
Nougat EMUI is compatible with:
@OldDroid •LineageOS, Ressurection Remix,AOSPA,OpenKirin TWRP•
@simo255 •ArseniK ROM, RocateX ROM, Smoky Kernel•
@HassanMirza01 •Elite ROM, Elite Kernel, Elite Kernel Reborn•
​
3.
Stock ROM-S
EMUI 4.1 BASED
MedroM by @simo255
Based on: B160/B201
Android Version: Android 6.0 Marshmallow
Features:
•Debloated
•Added hidden features
•Pre rooted
•Many more features
Development: DEPRECATED
MedroM
EMUI 5 BASED
EliteROM by @HassanMirza01
Based on: B385
Android Version: Android 7.0 Nougat
Features:
•KangV settings
•Prerooted using MagiskSU
•Safetynet passed
•Xposed Framework
•Many more customization options
•Added hidden features
•Preformance customization
•Preformance tweaks
•Elite kernel
•Init.d support added
•OTA compatibility
•Can unbrick any nougat firmware
•Many more features
DEVELOPMENT ACTIVE
Elite ROM
ArseniK by @simo255
Based on: B380/B385
Android Version: Android 7.0 Nougat
Features:
•Pre rooted
•Debloated
•KangV framework
•Preformance tweaks
•Battery life improvement
•Enabled hidden features
•Many more features
Development: DEPRECATED
ArseniK
RocateX by @simo255
Based on: B380
Android Version: Android 7.0 Nougat
Features:
•Magisk support
•Debloated
•Enabled hidden features
•More features
Development: DEPRECATED
RocateX
4.
THIRD PARTY ROMS AND KERNELS
FOR EMUI 4.1​
•Special TWRP Required
•To downgrade from any of these roms you need to have a stock emui system and boot dump in .img form which you would restore using the function inside that twrp (more on that in post 5.)
Code:
These ROMs are deprecated and are not advisable to flash except if you really know what you are doing. The flash procedure is available in our Telegram group
•CyanogenMod 13/LineageOS 13
•LineageOS 14
•Benstalk 6.25
•Resurrection Remix Marshmallow by @jsbeyond
•Slim 6.0.1 by @jsbeyond
•Meticulus TWRP required
•EMUI 4.1 or any other Meticulus ROM
•AICP Marshmallow by @The Marionette
•Meticulus TWRP required
•EMUI 4.1 or any other Meticulus ROM
FOR EMUI 5​
ROM-S
•LineageOS by @OldDroid
LineageOS
•Flash procedure is clearly written in the thread
•TWRP by @OldDroid required
•B370 Firmware as a base
DEVELOPMENT ACTIVE
•AOSPA by @OldDroid
Paranoid Android
•Flash procedure is clearly written in the thread
•TWRP by @OldDroid required
•B370 Firmware as a base
DEVELOPMENT ACTIVE
• Hyperactive ROM by @HassanMirza01
Hyperactive ROM
•Flash procedure is clearly written in the thread
•TWRP by @OldDroid required
•B370 Firmware as a base
DEVELOPMENT ACTIVE
KERNELS
• Veno Kernel by @Avsky0
•For Meticulus ROMS
•For EMUI 4.1
• Smoky Kernel by @simo255
•For EMUI 5 ROMS
•For EMUI 5 BASED ROMS
• Elite Kernel and Elite Kernel Reborn by @HassanMirza01
•For EMUI 5
•For EMUI 5 BASED ROMS
•For Olddroid BASED CUSTOM ROMS
5.
UNBRICKING, DOWNGRADING, SWITCHING ROMS
UNBRICKING EMUI 4.1
•Use when on stock EMUI 4.1 STOCK ROM ONLY
•Have a SDCard with at least 4Gb free space
•Have a PC with a SDCard reader
Note: This process uses the: " Three buttons method aka. Dload method and it will lock your bootloader (if unlocked) and restore stock recovery.
Procedure:
Code:
1.Create a folder named "dload" in the root of the SDCard (without quotation marks)
2.Extract UPDATE.APP file from b160.zip (you can find it in post 1.) update correspondingly to your phone model.
3.Place UPDATE.APP file in the dload folder on the SDCard
4.Insert SDCard in the phone
5.Press all three buttons (Vol+ & Vol- & Power)
6.I would recommend rebooting to ERecovery (Vol+ & Power) and factory reseting
7.After process is done your phone will have it's bootloader locked (if unlocked beforehand) and restored original Huawei Recovery
UNBRICKING AND DOWNGRADING FROM EMUI 5
•Use if you are on EMUI 5 STOCK ROM ONLY
•Have a SDCard with at least 4Gb free space
•Best for unbricking or having issues with encryption
•If not getting OTA updates
•Downgrading to EMUI 4.1
•If stuck with NRDM90 test-keys
Note: From my experience if you have problems with EMUI 5 this is the best method to recover from various sorts of issues. It will lock your bootloader (if unlocked) and restore stock recovery because it uses the " Three buttons method aka. Dload method
VNS-L11 Rollback package
VNS-L21 Rollback package
VNS-L21 Rollback package Alternative
VNS-L22 Rollback package
VNS-L31 Rollback package
This file is a rollback package which enables downgrading from EMUI 5 to B160 firmware listed in the 1. post. It will restore stock recovery and also change your phone version number to C900B300 (don't worry about it).
Procedure:
Code:
1.Create folder "dload" (without quotation marks) on the root of the SDCard
2.Extract UPDATE.APP from the rollback package corespondingly to your model number and place it in the dload on the SDCard.
3.Insert SDCard and power off the phone
4.Press Vol+ & Vol- & Power and let the rollback package to flash
5.Power off and take out the SDCard
6.Remove the UPDATE.APP from the dload folder on the SDCard
7.Download B160 update.zip (provided in 1. post) correspondingly to your model number and extract the UPDATE.APP in the dload folder on the SDCard
8.Insert SDCard and press Vol+ & Vol- & Power
9.Wait untill it finishes, you will end up with a locked bootloader (if it was unlocked beforehand)
10.I recommend rebooting to ERecovery (Vol+ and Power) and factory reseting
11.You will end up with stock EMUI 4.1
12. Update to EMUI 5 using the official updater inside Settings
SWITCHING ROMS
Note: This information is only provided so that anyone using Meticulus ROMS could downgrade without problems
Meticulus ROMS to EMUI 4.1
•Have a stock EMUI 4.1 system dump located on your SDCard in folder "meticulus" with boot.img and system.img in it.
•Working Meticulus TWRP
•For more information join our Telegram group
Code:
1.Reboot to TWRP
2.Press Advanced > Extras > Restore Dump
3.Wait, it will take about 15-20 minutes depending on your SDCard speed
4.Reboot and boot up
Or (WARNING! I DIDN'T DO THIS, DO IT ON YOUR OWN RISK)
•Have a SDCard with 4Gb free space
Code:
1.Create folder "dload" (without quotation marks) on your SDCard
2.Download B160 update.zip correspondingly to your model number, extract UPDATE.APP from it and place in the dload folder
3.Insert SDCard in the phone and press Vol+ & Vol- & Power
4.Wait for the firmware to flash
5.This will theoretically relock your bootloader and restore stock recovery
6.Enter stock recovery and preform a factory reset to remove encryption
6.
ROOTING AND RECOVERY
FOR EMUI 4.1
TWRP for EMUI 4.1
MagiskSU thanks to @topjohnwu
or SuperSU
Code:
1. Unlock bootloader, I suggest using the P9 Lite Toolkit (Link in post 7.;Note that unlocking the bootloader factory resets your phone)
2.Flash the TWRP linked above using the Toolkit in the Recovery section > Individual > Select the recovery in the empty box and press Flash Recovery
3.Reboot to recovery when flashed
4.Flash latest Magisk.zip or SuperSU.zip linked above in Recovery > Install > Select the zip and slide the Install button
5.Boot up and enjoy
FOR EMUI 5
TWRP for EMUI 5 thanks to @OldDroid
MagiskSU thanks to @topjohnwu
Code:
1. Unlock bootloader, I suggest using the P9 Lite Toolkit (Link in post 7.;Note that unlocking the bootloader factory resets your phone)
2.Flash the TWRP linked above using the Toolkit in the Recovery section > Individual > Select the recovery in the empty box and press Flash Recovery
3.Reboot to recovery when flashed
4.Flash latest Magisk.zip linked above in Recovery > Install > Select the zip and slide the Install button
5.Boot up and enjoy
7.
USEFUL INFO/FAQ/TOOLS/LINKS
INFO AND FAQ
•NRD90M Test-Keys firmware and how to fix this issue: check POST 5.
-This issue appears when you update from EMUI 4.1 to EMUI 5 with the incomplete OTA. Usually when updating from B160 to B371.
-To avoid this issue use full OTA updates with data. They are usually 1.8Gb and more in size.
-If not sure ask for help in Telegram group
•System apps missing, Bluetooth not working and version number is not NRD90M Test-Keys
-Pseudo NRD90M Test-Keys
-Same fix as stated for NRD90M Test-Keys
•Stuck in ERROR mode?
-Discharge your phone untill it shuts down
-After the phone is off and can't turn on, insert the charger cable and press & hold Vol-
-You should enter fastboot mode
•Accessibility services get turned off?
-Protect the app that uses Accessibility using the phone manager.
-Ignore battery optimisation for that app in settings
-Reboot your phone
-Turn on Accessibility for that app
-It should remain on from now on
•Cannot mount /data in TWRP?
-Reboot to recovery and try again
•Want to convert your phone to C432?
-Use Toolkit by @k1ll3r8e (link at the bottom of this post)
•Have an issue that is not listed here and you want us to help you?
-Follow these guidelines:
Code:
•Your last firmware:
•Model number:
•Your region:
•Also if you can enter bootloader mode (Vol- & Power) and check is FRP unlocked/locked and bootloader unlocked/locked
•Do you have access to Recovery mode/Bootloader mode?
•Your issue written in detail (what is the problem):
•What did you try doing (and if you did something, write how you did it in as much detail as possible):
And please use English language!
TOOLS
• P9 Lite Toolkit
by @k1ll3r8e
Features:
•Unlock Bootloader
•Relock Bootloader
•Convert Single sim/Dual sim
•Flash OEMInfo
•Flash Recovery
•Flash TWRP for EMUI 4.1 or EMUI 5
•Root
•Simple and easy to use GUI
15 Second ADB and Fastboot installer
by @Snoop05
Features:
•Easily install ADB and Fastboot
SRK Tool for P9 Lite
by @somboons
Features:
•Unlock Bootloader
•Relock Bootloader
•Change OEMInfo and Custom.bin
•Fastboot utilities
•Flash TWRP for EMUI 4.1
Firmware Finder
by @gmanrainy
Features:
•Use to find certain Firmwares I haven't linked here or for general updating/extracting purposes.
•Supports all P9 Lite variants
UPDATE.APP Extractor
by @worstenbrood
Features:
•Extract any file from a UPDATE.APP Firmware file
​
8.
TWEAKS AND MODS
NO ROOT REQUIRED
•Debloating using adb:
Code:
1.Use App Inspector to find the package name of the app you want to uninstall from the system
2.Connect your phone to the PC and enable USB-debugging
3.Install drivers through HISuite and give debugging permission from your phone
4.Open a command window and exceute:
pm uninstall -k --user 0 <name of package>
ROOT REQUIRED
•Enable double tap to wake aka. DT2W on EMUI:
Code:
1.Go to /product/etc/prop/local.prop and edit:
ro.config.hw_easywakeup=false to "true"
2.Go to /system/emui/base/xml/hw_easywakeupmotion_config.xml and edit:
name="Double_Touch" support="1" value="0" flag="0" keycode="131" />" change "value=1"
3.Reboot and enable DT2W in settings
MAGISK REQUIRED
•RAW Capture in stock EMUI camera
Module LINK
​
9.RESERVED
good morning to all cracks out there. found this thread and need some help. bricked my p9lite while trying to return to stock emui 4 from resurrection marshmallow. recovery, erecovery, dload and funky huawei are not working. device is showing only the start screen "your device has been unlocked and........" (no matter if i try to enter recovery or boot the device). the only working thing is fastboot. i would be very greatfull if anybody could give me some advices. (flashing boot, recovery, system and cust were not succesfull, yesterday i could enter recovery but could not boot the device, while on stock recovery adb commands were unauthorized). one more thing i could enter was a screen with a usb cable and "installing update", this procedure stucks at 5%
anybody out there who is willing to give me some advices? managed to return to my previous installed rr marshmallow. want to go back to stock emui 4 and update to huawei n in order to flash the new olddroid recovery and openkirin rom. would anybody please be so kind and give me some advices?
update my roms please
HassanMirza01 said:
update my roms please
Click to expand...
Click to collapse
Sure, also it would be helpful if you could suggest the changes.
Your last firmware: nrd90m testkeys
Model number:L31
Your region:UK
i put the wrong oem and cust.bin and device and i cannot do anything i tried flashing other oem info and cust but it says im not allowed i dont have product id and i was trying to downgrade to android 6 i did have twrp but i cant get into it but i can gointo fastboot and erecovery(erecovery says my os is not supported or the equivilent its been awhile i even tried the pc software but nothing) but it does not let me flash oem info and cust i tried for a few weeks but nothing would let me do it i even asked on fourms and nothing no one knew how to fix, i really need my phone i don't care if it gets reset i just need it to work please, please help me, the only way i can see it getting fixed if somthing pretends to be erecovery and flashes the phone that way then i can get it to work but there is no such program yet
bghyt said:
Your last firmware: nrd90m testkeys
Model number:L31
Your region:UK
i put the wrong oem and cust.bin and device and i cannot do anything i tried flashing other oem info and cust but it says im not allowed i dont have product id and i was trying to downgrade to android 6 i did have twrp but i cant get into it but i can gointo fastboot and erecovery(erecovery says my os is not supported or the equivilent its been awhile i even tried the pc software but nothing) but it does not let me flash oem info and cust i tried for a few weeks but nothing would let me do it i even asked on fourms and nothing no one knew how to fix, i really need my phone i don't care if it gets reset i just need it to work please, please help me, the only way i can see it getting fixed if somthing pretends to be erecovery and flashes the phone that way then i can get it to work but there is no such program yet
Click to expand...
Click to collapse
Firstly, did you try using the dload method to downgrade?
Refer to post 5. (UNBRICKING/DOWNGRADING/SWITCHING ROMS)
In that post you have explained under EMUI 5 how to downgrade from NRD90M TEST-KEYS.
Please follow the procedure carefully:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
UNBRICKING AND DOWNGRADING FROM EMUI 5 ​
•Use if you are on EMUI 5 STOCK ROM ONLY
•Have a SDCard with at least 4Gb free space
•Best for unbricking or having issues with encryption
•If not getting OTA updates
•Downgrading to EMUI 4.1
•If stuck with NRDM90 test-keys
Note: From my experience if you have problems with EMUI 5 this is the best method to recover from various sorts of issues. It will lock your bootloader (if unlocked) and restore stock recovery because it uses the " Three buttons method aka. Dload method
VNS-L21 Rollback package
VNS-L22 Rollback package
VNS-L31 Rollback package
This file is a rollback package which enables downgrading from EMUI 5 to B160 firmware listed in the 1. post. It will restore stock recovery and also change your phone version number to C900B300 (don't worry about it).
Procedure:​
Code:
1.Create folder "dload" (without quotation marks) on the root of the SDCard
2.Extract UPDATE.APP from the rollback package corespondingly to your model number and place it in the dload on the SDCard.
3.Insert SDCard and power off the phone
4.Press Vol+ & Vol- & Power and let the rollback package to flash
5.Power off and take out the SDCard
6.Remove the UPDATE.APP from the dload folder on the SDCard
7.Download B160 update.zip (provided in 1. post) correspondingly to your model number and extract the UPDATE.APP in the dload folder on the SDCard
8.Insert SDCard and press Vol+ & Vol- & Power
9.Wait untill it finishes, you will end up with a locked bootloader (if it was unlocked beforehand)
10.I recommend rebooting to ERecovery (Vol+ and Power) and factory reseting
11.You will end up with stock EMUI 4.1
12. Update to EMUI 5 using the official updater inside Settings
dariomrk said:
Firstly, did you try using the dload method to downgrade?
Refer to post 5. (UNBRICKING/DOWNGRADING/SWITCHING ROMS)
In that post you have explained under EMUI 5 how to downgrade from NRD90M TEST-KEYS.
Please follow the procedure carefully:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
UNBRICKING AND DOWNGRADING FROM EMUI 5
•Use if you are on EMUI 5 STOCK ROM ONLY
•Have a SDCard with at least 4Gb free space
•Best for unbricking or having issues with encryption
•If not getting OTA updates
•Downgrading to EMUI 4.1
•If stuck with NRDM90 test-keys
Note: From my experience if you have problems with EMUI 5 this is the best method to recover from various sorts of issues. It will lock your bootloader (if unlocked) and restore stock recovery because it uses the " Three buttons method aka. Dload method
VNS-L21 Rollback package
VNS-L22 Rollback package
VNS-L31 Rollback package
This file is a rollback package which enables downgrading from EMUI 5 to B160 firmware listed in the 1. post. It will restore stock recovery and also change your phone version number to C900B300 (don't worry about it).
Procedure:
Click to expand...
Click to collapse
And this will work even tho i have replaced my recovery with twrp?
bghyt said:
And this will work even tho i have replaced my recovery with twrp?
Click to expand...
Click to collapse
Yes, it doesn't use the recovery. It uses the secondary ERecovery. You enter it by powering off your phone and then by pressing all three buttons (hence the name).
dariomrk said:
Yes, it doesn't use the recovery. It uses the secondary ERecovery. You enter it by powering off your phone and then by pressing all three buttons (hence the name).
Click to expand...
Click to collapse
Thank you very much this has gotten me excited as i thorght i had lost my phone.
bghyt said:
Thank you very much this has gotten me excited as i thorght i had lost my phone.
Click to expand...
Click to collapse
If you need help in real time you can message me on Telegram

Can not upgrade to B390 (C432)

Hi,
I'm on C432, unlock bootloader. (It's a debranded phone).
I can't update. to B390.
I did a clean install of B386 using TWRP (flash the 2 zip file, clean cache). B386 works fine.
Update from phone did upload the B390 update, it rebooted into Huawei recovery and it failed at 12%. "Software installed failed".
So I've tried with TWRP (I have downloaded the B390 from Firmware finder) and it fails on update.zip with an error 7.
I've tried various versions of B390 (from Firmware finder) and they all fail when trying to install update.zip from TWRP.
Flashing back B386 with TWRP works (no errors when flashing update.zip).
It seems the update.zip from B390 tries to look for something missing in my phone....
Any ideas ?
Thanks !
XavierP56 said:
Any ideas ?
Thanks !
Click to expand...
Click to collapse
Stay on B386 unless you're really keen for the latest security update.
Peace.
I can' t even go back to B182, B383. Only B386 I can install (hopefully). This tells me that something is corrupted in my phone.
I have the following error with TWRP:
assert_failed: block_image_verify("/dev/block/platform/hi_mci.0/by-name/system", "package_extract_file("system.transfer.list"), "system.new.dat", "system.patch.dat")
ERROR 7
With other update.zip, I also have
assert(update_huawei_pkg_from_ota_zip("UPDATE.APP"));
What's wrong in my phone ?
https://forum.xda-developers.com/p9/how-to/update-method-problems-to-version-t3660717
albelushi7 the problem is that update.zip fails with TWRP because of the assert.
I guess the problem is because my VENDOR, PRODUCT, VERSION are probably corrupted (or may be other partitions).
I can't flash them using fastboot.
I looking for a TWRP backup of these partitions for a L09C432 model. Can someone share a backup of these partitions ?
(Even a full backup with B390 installed for a L09C432 would be great !)
Thanks !
I'm going crazy with this. Tried to rollback to MM everything time I try to flash, it fails.
Either by
- TWRP : Update.zip fails with ERROR 7
- Huawei updater + HiSuite
- 3 Button methold and dload folder.
I can only flash B386. It works fairly OK but with some random crashes.
I don't understand what's wrong with my phone. It was an Orange phone, debranded to C432. I had several updates without any issues and problem came since B383.
Could not update with Phone updater to B386. Did with TWRP. But now, I can't install anything. Only B386 can be installed !!!
XavierP56 said:
I'm going crazy with this. Tried to rollback to MM everything time I try to flash, it fails.
Either by
- TWRP : Update.zip fails with ERROR 7
- Huawei updater + HiSuite
- 3 Button methold and dload folder.
I can only flash B386. It works fairly OK but with some random crashes.
I don't understand what's wrong with my phone. It was an Orange phone, debranded to C432. I had several updates without any issues and problem came since B383.
Could not update with Phone updater to B386. Did with TWRP. But now, I can't install anything. Only B386 can be installed !!!
Click to expand...
Click to collapse
same thing happen with my phone. now, i use c185 with b390. you should try the same.
So you flashed the OemCust for C185 and it worked ? Good to know !
You were on C432 before ?
Did you try revert back to your original OemCust ?
Thanks !
Hi! I had the same problem. I solved it in this way:
Backup app+data with titanium
Revert to MM with the official procedure, upgrade via updater to nougat and install, always via updater the updtes until B390. Works everything.
The I reunlocked bootlader via adb, install twrp, rooted and restore apps with titanium.
Long procedure, but it worked
rikiki81 said:
Hi! I had the same problem. I solved it in this way:
Backup app+data with titanium
Revert to MM with the official procedure, upgrade via updater to nougat and install, always via updater the updtes until B390. Works everything.
The I reunlocked bootlader via adb, install twrp, rooted and restore apps with titanium.
Long procedure, but it worked
Click to expand...
Click to collapse
How lucky ! I did install MM Rollback and then MM (C432B136). I was on stock recovery and bootloader locked.
Update B136 -> B160 : Ok
Update B160 -> B182 : Failed
Now I can barely install anything (B386 anymore, it used, now it doesn't). Only TWRP...
XavierP56 said:
How lucky ! I did install MM Rollback and then MM (C432B136). I was on stock recovery and bootloader locked.
Update B136 -> B160 : Ok
Update B160 -> B182 : Failed
Now I can barely install anything (B386 anymore, it used, now it doesn't). Only TWRP...
Click to expand...
Click to collapse
When I downgraded to MM I was already on b182. I immediately had the nougat update available.
B182-->B380-->B386-->B390
I used ths: http://consumer.huawei.com/it/support/phones/p9/

Can't update from .106 to .107 (CLT-L29 C432) - tells me zips are corrupt

Hi all,
I am on a P20 Pro EU Version (CLT-L29 C432) with firmware 106.
What I wanted to do is update from 106 to 107. I have:
- unlocked bootloader
- TWRP installed (tried with official and Pretoriano80 version {https://forum.xda-developers.com/huawei-p20-pro/development/recovery-twrp-3-2-1-0-t3779400})
- Huawei Firmware Finder
- Patched bootloader from here as well back when the only possibility to install magisk was via patched bootloader (self-created from 106 boot img)
What happened so far is:
1) got the official update notification -> small OTA install failed -> received full update -> failed
2) tried install via TWRP with downloaded OTA from https://forum.xda-developers.com/hu...rmware-release-clt-l29-8-1-0-107c432-t3779167 -> tells me zip is corrupt (=failed)
3) install via twrp and select update.zip in Huawei Firmware Finder folder -> zip corrupt -> failed
4) installed via dload method - tried small and large update file --> "Software install failed"
so yeah. i dont really know where to go from here and the google maps issue is really bugging me, so i def want to update
appreciate any help
OTA fails = you have TWRP installed
TWRP installation fails = TWRP cannot install these OTA files (what I know of)
Install orig recovery and use the FF proxy method.
thanks @fregor - do you by any chance know where I could download it? I could only find firmware files
use the initial method download the ota unzip it put it in folder named dload and proceed to the update by turning on ur phone while pressing both volume keys
just tried with the 500mb ota and get a "software install failed"
will try with the big one if i somehow find the DL location of it
alright man, I have downloaded the full update via FF. when i unzip the "update.zip" i always get a file is corrupted error. happens on mac and on windows :/
AND downloaded it from here http://pro-teammt.ru/firmware-database/?firmware_model=CLT-L29C432&firmware_page=0 --> software install failed again
kinda lost now tbh
thank you all for your assistance - what helped in the end was using zxz0o0's tool HuRUpdater. It flashes FULL official firmwares without the online check. Can be found here: https://forum.xda-developers.com/honor-9/development/tool-flash-official-firmware-recovery-t3769279

PRA-LA1 OEMINFO anyone? Can't update after rebranding to PRA-LX1

Hi guys. A while back I bricked my la1 and found a lx1 rescue box (which worked). However I would like to update it to emui 8 single sim for the la1 and can't because of my oeminfo being for lx1. I have the update.app for the new firmware and have installed honor 8 oeminfo (PRA-LA1) on my Huawei (PRA-LA1). Not sure what I should flash from the update.app as there are different img files from the usual recovery, boot, cust etc.
yuvaanraj said:
Hi guys. A while back I bricked my la1 and found a lx1 rescue box (which worked). However I would like to update it to emui 8 single sim for the la1 and can't because of my oeminfo being for lx1. I have the update.app for the new firmware and have installed honor 8 oeminfo (PRA-LA1) on my Huawei (PRA-LA1). Not sure what I should flash from the update.app as there are different img files from the usual recovery, boot, cust etc.
Click to expand...
Click to collapse
You can't update to a newer version of Android using the update.app... the device will refuse the package and it will fail ...you have to wait until the OTA update arrives.
Sent from my PRA-LA1 using Tapatalk
yuvaanraj said:
Hi guys. A while back I bricked my la1 and found a lx1 rescue box (which worked). However I would like to update it to emui 8 single sim for the la1 and can't because of my oeminfo being for lx1. I have the update.app for the new firmware and have installed honor 8 oeminfo (PRA-LA1) on my Huawei (PRA-LA1). Not sure what I should flash from the update.app as there are different img files from the usual recovery, boot, cust etc.
Click to expand...
Click to collapse
http://www.haky86.me/2018/04/install-emui-80-beta-on-huawei-p8-lite.html

Flash EMUI8 firmware from EMUI5 through fastboot?

In the searching for an EMUI5 firmware I have stumbled upon an EMUI8 one that my phone can have installed, I got this from the Firmware Finder:
Code:
Firmware approved for install
Build: PRA-LX3 8.0.0.360(C605)
Also there are other that says FULLOTA-MF-PV, FULLOTA-MF or just FULLOTA, which one should I use?
Now, in Multi-Tool I have an option to "Unbrick" the phone by flashing several images, can I use that to also flash a new firmware, in this case EMUI8? Though I haven't found a boot.img file when I extracted the update.app file. Even if I shouldn't use Multi-Tool can I extract the update file with Huawei Extractor and then flash everything with fastboot commands?
I can't access erecovery because in the past I have flashed something there (that's why I was looking for a EMUI5 firmware, so I could restore the stock recovery), I can only access fastboot&rescue mode, when I tried updating the OS from the phone itself (I had an update that said it includes May 2018 security patches) it rebooted to an error message. I have everything unlocked in this phone.

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