Huawei P20 Briked? - Huawei P20 Lite Questions & Answers

Hi there
I think my phone is briked. I wantet to downgrade my phone to the 108 version becaus there was android auto working.
So i tried to flash the System.img from the 108 Software. I tried 2 different:
http://pro-teammt.ru/firmware-database/?firmware_model=ANE-lx1&firmware_page=0
and the Middle east from the thread here.
Id did flash over fastboot, but after every start the Build number was still on the 112 Firmware.
So i tried the Trebel ASOP, RR and LOS. ASOP Booted but had only forceclose on every service. RR and LOS did not work.
Then i tried to flash the ramdisk, recovery, vendor kernel etc from the update.app from the 108 Firmware. No my phone is briked.
I tried to flash eveyrthing from the .112 updateapp from the Official thread but nothing happend.
Then i tried to flash every possible .img file from the .112 app but most of them gave "Error Command not allowed"
So here i Am. Bootlooping phone and i dont know what else to do.
Since the beginning i could flash every system.img but it still was on the 112 Build and suddenly it bricked. I cant get to the 112 Version back with flashing system.img because it bootloops. Same for Treble and the newest 126 Version or the old 108 Build.
The only thing booting is ASOP Treble but i cant navigate coz of the 1000 of forceclosed errors.
I formated the userpartition as i was asked from Huawei, and bevore i did those installations i did a fullwipe with EMUI.
The Recovery cant connect to the server, and yeah.. i dont know what to do next. ofc i have unlocked bootloader. I bought the Phone in Switzerland with Dual Sim. ANE-LX1.
Does anyone have another idea?
Cheers
EDIT:
After 10000 billions klicks i managed to get through the treble wizzard, even when the com.android.phone has stopped is comming every second.
At the Moment im in the About Phone Screen and i see this: (I am in the newest ASOP Treble SU with gapps)
Model: ANE-LX1
Android Version 8.1
Baseband: unknown
Kernel Version 4.4.23+ (gcc version 4.9x 20150123 (prerelease) (GCC))
Fri Mar 9 09:51:47 CST 2018
Build Number ANE-LX1 8.0.0.112(c432) <------- WTF ?!?
I hope this informations is something to work with.
SIM CARD is not readable.
Edit2:
I connected it to HI SUit. It says my device running properly on the .112 Version (WTF i got Treble installed)
I cant connect anything. How the hell can i get rid of this ****ing wong Build number??
Same for Checking Updates. .112 should be newest (its not its 126) Any ideas?
Edit3:
Can only Flash with fastboot. Twrp cant mount the partitions. Trying to installing the zip or adb sideload gives me an error code or command not allowed :\

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i think the best way is
download a FULL-Update for your build
https://forum.xda-developers.com/9-lite/help/huawei-honor-firmware-download-t3790327
read this https://forum.xda-developers.com/hon...flash-t3778085
if you understand and have the know how : good luck
with this way i have my Ho9L reflash to stock-rom
you have to know what you're doing
use Magisk (search inside xda the thread)
this work by me better as SuperSU (with less problem's)
use this twrp, it's work WITH encryption
ttps://forum.xda-developers.com/huawei-p20-lite/development/recovery-testing-t3783587
if you understand what i am write - you can reset your phone to "delivered-state" and beginning by zero (initial-setting's) and
what ever you flash - you have a chance to reset your phone
first look on bootloader-screen if
- bootloader unlocked
- FRP unlock
THIS is essential !
last tip: let the fingers from custom-rom if this not expressly build for OREO
OREO is other as NOUGAT ! very different !

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Relock your bootloader before trying an Erecovery...

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please try this :
- download full update rom for your device, extract the .APP files using HuaweiUpdateExtractor
- boot into fastboot by press and hold Volume Down and plug in usb cable into your pc and your phone, hold it until it boot into fastboot
- do this :
fastboot flash kernel kernel.img
fastboot flash ramdisk ramdisk.img
fastboot flash recovery_ramdisk recovery_ramdis.img
fastboot flash recovery_vbmeta recovery_vbmeta.img
fastboot flash recovery_vendor recovery_vendor.img
fastboot flash system system.img
fastboot flash vbmeta vbmeta.img
fastboot flash vendor vendor.img
- reboot your device and hold Volume Up and Volume Down to get it boot into eRecovery and do Wipe Cache Partitions and then do Factory Data Reset, and reboot again
- let it boot normally, and see what happen next, i can't remember for sure because it's been so long i unbricked my Nova 2s with this method. there are 2 possibility, you'll boot into system normally, or it will boot into eRecovery again and there is an option Download Latest Version And Recovery and you can choose that, of course you should have connection to internet via wifi.
please report back if you have difficulties.

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heindrix said:
please try this :
- download full update rom for your device, extract the .APP files using HuaweiUpdateExtractor
- boot into fastboot by press and hold Volume Down and plug in usb cable into your pc and your phone, hold it until it boot into fastboot
- do this :
fastboot flash kernel kernel.img
fastboot flash ramdisk ramdisk.img
fastboot flash recovery_ramdisk recovery_ramdis.img
fastboot flash recovery_vbmeta recovery_vbmeta.img
fastboot flash recovery_vendor recovery_vendor.img
fastboot flash system system.img
fastboot flash vbmeta vbmeta.img
fastboot flash vendor vendor.img
- reboot your device and hold Volume Up and Volume Down to get it boot into eRecovery and do Wipe Cache Partitions and then do Factory Data Reset, and reboot again
- let it boot normally, and see what happen next, i can't remember for sure because it's been so long i unbricked my Nova 2s with this method. there are 2 possibility, you'll boot into system normally, or it will boot into eRecovery again and there is an option Download Latest Version And Recovery and you can choose that, of course you should have connection to internet via wifi.
please report back if you have difficulties.
Click to expand...
Click to collapse
I'm getting this error when I'm trying to extract UPdate.app of anE-LX1 8.0.0.108(C185)
https://ibb.co/k0HmGy

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haidermiz said:
I'm getting this error when I'm trying to extract UPdate.app of anE-LX1 8.0.0.108(C185)
https://ibb.co/k0HmGy
Click to expand...
Click to collapse
go to settings, untick all options that have "verify" in it, and try extract again.

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heindrix said:
go to settings, untick all options that have "verify" in it, and try extract again.
Click to expand...
Click to collapse
thanks it worked

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heindrix said:
please try this :
- download full update rom for your device, extract the .APP files using HuaweiUpdateExtractor
- boot into fastboot by press and hold Volume Down and plug in usb cable into your pc and your phone, hold it until it boot into fastboot
- do this :
fastboot flash kernel kernel.img
fastboot flash ramdisk ramdisk.img
fastboot flash recovery_ramdisk recovery_ramdis.img
fastboot flash recovery_vbmeta recovery_vbmeta.img
fastboot flash recovery_vendor recovery_vendor.img
fastboot flash system system.img
fastboot flash vbmeta vbmeta.img
fastboot flash vendor vendor.img
- reboot your device and hold Volume Up and Volume Down to get it boot into eRecovery and do Wipe Cache Partitions and then do Factory Data Reset, and reboot again
- let it boot normally, and see what happen next, i can't remember for sure because it's been so long i unbricked my Nova 2s with this method. there are 2 possibility, you'll boot into system normally, or it will boot into eRecovery again and there is an option Download Latest Version And Recovery and you can choose that, of course you should have connection to internet via wifi.
please report back if you have difficulties.
Click to expand...
Click to collapse
When i did fastboot flash vendor vendor.img it says
target reported max download size of 471859200 bytes
sending sparse 'vendor' 1/2 (460706 KB)...
OKAY [ 18.084s]
writing 'vendor' 1/2...
FAILED (remote: Command not allowed)

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haidermiz said:
When i did fastboot flash vendor vendor.img it says
target reported max download size of 471859200 bytes
sending sparse 'vendor' 1/2 (460706 KB)...
OKAY [ 18.084s]
writing 'vendor' 1/2...
FAILED (remote: Command not allowed)
Click to expand...
Click to collapse
Hi there, if you have TWRP, you could flash system and vendor using TWRP. boot into TWRP, choose install, choose use image file, and flash system.img to system, and vendor.img to vendor.

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heindrix said:
Hi there, if you have TWRP, you could flash system and vendor using TWRP. boot into TWRP, choose install, choose use image file, and flash system.img to system, and vendor.img to vendor.
Click to expand...
Click to collapse
Tried then phone was stuck at installing update 5% after 5 mins there was a screen android written on it then again it booted to erecovery i factory reset data, wiped cache then again it rebooted and it's finally open now thanks

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heindrix said:
Hi there, if you have TWRP, you could flash system and vendor using TWRP. boot into TWRP, choose install, choose use image file, and flash system.img to system, and vendor.img to vendor.
Click to expand...
Click to collapse
I did that a installed stock rom after that I tired to reset data it said failed, it failed at 20% then I WIPED CHAHE and now when It opened I sign in and downloaded snapchat but it's noy opening and in settings about phone there's no model number mentioned it says unknown I don't know what to do

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haidermiz said:
I did that a installed stock rom after that I tired to reset data it said failed, it failed at 20% then I WIPED CHAHE and now when It opened I sign in and downloaded snapchat but it's noy opening and in settings about phone there's no model number mentioned it says unknown I don't know what to do
Click to expand...
Click to collapse
if you could, please provide screenshot so i can see it more clearly.
after you flashing the rom, one thing you must do is to format the data and cache through emui erecovery, as long as you're not format the data and cache successfully, the rom will not works properly.
for another reference, please refer to my other post here : https://forum.xda-developers.com/ma...0-pro-help-t3776050/post76916307#post76916307

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heindrix said:
if you could, please provide screenshot so i can see it more clearly.
after you flashing the rom, one thing you must do is to format the data and cache through emui erecovery, as long as you're not format the data and cache successfully, the rom will not works properly.
for another reference, please refer to my other post here : https://forum.xda-developers.com/ma...0-pro-help-t3776050/post76916307#post76916307
Click to expand...
Click to collapse
Greetings, I downloaded the rom of my Huawei p20 EML-L09 and it has two Update.app
How and in what order should I install them?
Udpate.app that weighs 4.62gb and
update_EML-L09_hw_la.app which weighs 1.5gb
Thanks a lot.

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ajbn7 said:
Greetings, I downloaded the rom of my Huawei p20 EML-L09 and it has two Update.app
How and in what order should I install them?
Udpate.app that weighs 4.62gb and
update_EML-L09_hw_la.app which weighs 1.5gb
Thanks a lot.
Click to expand...
Click to collapse
Hi,
this guide is two years old, if you want to recover your phone, download Service ROM from androidhost.ru website, and flash it using dload method .
Which EMUI version are you running? Your region is C605 ?

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-Alf- said:
Hi,
this guide is two years old, if you want to recover your phone, download Service ROM from androidhost.ru website, and flash it using dload method .
Which EMUI version are you running? Your region is C605 ?
Click to expand...
Click to collapse
Correct, my region is 605. I already downloaded the latest version available for download on that page which is 8.1.
Before my phone went into brick, it had version 9.1
And bring those two update.app

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ajbn7 said:
Before my phone went into brick, it had version 9.1
Click to expand...
Click to collapse
For 9.1 you can download
https://androidhost.ru/2bCG
Unpack .zip archive , find dload file and simply transfer it to the SD card, without unpacking it! (instructions can be found in ReleaseDoc folder).
Turn off your phone and flash FW using three button combo.
Note: Service ROM L-29 contains both version - L-29 & L-09 .

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-Alf- said:
For 9.1 you can download
https://androidhost.ru/2bCG
Unpack .zip archive , find dload file and simply transfer it to the SD card, without unpacking it! (instructions can be found in ReleaseDoc folder).
Turn off your phone and flash FW using three button combo.
Note: Service ROM L-29 contains both version - L-29 & L-09 .
Click to expand...
Click to collapse
I struggled so hard to download the file, and to my surprise it does not include the software version for the L-09, only for the L-29
Are there any risks if I try to install version 8.1?
Another thing, the Huawei p20 does not have a micro sd slot, I guess I should do it through a USB OTG?

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ajbn7 said:
I struggled so hard to download the file, and to my surprise it does not include the software version for the L-09, only for the L-29
Click to expand...
Click to collapse
Are you sure?
I'm really sorry, but most of the packages are universal.
ajbn7 said:
Are there any risks if I try to install version 8.1?
Click to expand...
Click to collapse
It may brick your phone definitively.
ajbn7 said:
Another thing, the Huawei p20 does not have a micro sd slot, I guess I should do it through a USB OTG?
Click to expand...
Click to collapse
Yes, you can.

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ajbn7 said:
I struggled so hard to download the file, and to my surprise it does not include the software version for the L-09, only for the L-29
Are there any risks if I try to install version 8.1?
Another thing, the Huawei p20 does not have a micro sd slot, I guess I should do it through a USB OTG?
Click to expand...
Click to collapse
Okay, I definitely don't get the 9.1 for Eml-09 for free.
So last query (I hope), what is less risky, install Rom 8.1 which is for my region and exact model, or install Rom 9.1 with my region but for model L-29 or install a Rom 9.1 for my model but with a different region?
Thank you for your support.

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ajbn7 said:
what is less risky?
Click to expand...
Click to collapse
L29 EMUI 9.1 C605. Even if it succeeds the phone will not work correctly.
Most probably you will get the wrong model or in build number "system_0.46 (xxxx)" . HiSuite will not recognize your device (and no OTA update).