Recommended and tested TWRP Recovery

[-Alf-]

EMUI 8 Stock ROMs:

3.2.1-0 by pretoriano80 (with data decryption on Android 8 )
https://mega.nz/#!Fgd0xa4R!1o5ejzDnkLJLG2tAZG-STtlJ4nnNCHfwwZdOlmOkrVw

EMUI 8 Custom ROMs:

3.2.1.0 by Catuva21:
https://mega.nz/#!JlkRVY7b!Hz0QTmbgmMNeCaU-PmVRBGKsdd9pslmWNkOZpE6I8ZA

3.2.3-0 by Askuccio
https://mega.nz/#!h9903SqS!aRXc9x6Kuz_GclVy_3ZExCLDSdnp7Ee8VIgfqOG9x8k

Chinese ROMs (inc. KangVip):
3.2.1-0
https://mega.nz/#!sp0UyCDR!bq10MAyh0sddUCPi0zecQzrmLfCESFvNlCiQ3vkPMqI

EMUI 9.1 Stock ROM & Custom ROMs:

3.2.1-0 GAGUGA Edition
https://mega.nz/#!tkcTlATI!A8UJGPBGtxJbLcUOJoxCGJj5PFZXzCnjbb3OkwqKTP8

EMUI 9.1 Custom ROMs:
3.4.0-0-emui9_eR by @S_mak
https://mega.nz/#!B8kWgJDC!_hj7xkTzF9Uj66wKjtrWPHEV5Dbkk7Q256tuiKg7FQU

On [A12], [A12.1] GSIs use 3.4.0-0-emui9_eR .

 

[adamfirari]

Do you mean you can install these over erecovery partition?

 

[-Alf-]

Do you mean you can install these over erecovery partition?

These TWRPs allow you to install any compatible TWRP over eRecovery.

 

[TureX]

Hi!
Is there a recovery that is able to make a full backup (modem nvm ecc..)?

 

[-Alf-]

Hi!
Is there a recovery that is able to make a full backup (modem nvm ecc..)?

Hello,
I never use Nandroid backup, so I don't know. Test it and let us know

 

[wax_77]

hi all,
addonsu.zip works?

my output trying to flash via twrp

...
Installing su addon...
set_metadata: Error on lstat of "/system/addon.d/51-
addon.su": No such file or directory
Updater procedd ended with ERROR: 7
Error installing zip file '/sdcard/Download/addonsu-
16.0-arm-signed.zip'
...

twrp seems work fine, i can flash los and gapps without problem...

thank you

 

[TureX]

hi all,
addonsu.zip works?

my output trying to flash via twrp

...
Installing su addon...
set_metadata: Error on lstat of "/system/addon.d/51-
addon.su": No such file or directory
Updater procedd ended with ERROR: 7
Error installing zip file '/sdcard/Download/addonsu-
16.0-arm-signed.zip'
...

twrp seems work fine, i can flash los and gapps without problem...

thank you

HI!
Which vendor are you using? And which twrp shared are you using? Does lineageos 16 official boot keeping twrp installed?
Thanks in advance

 

[-Alf-]

hi all,
addonsu.zip works?

my output trying to flash via twrp

...
Installing su addon...
set_metadata: Error on lstat of "/system/addon.d/51-
addon.su": No such file or directory
Updater procedd ended with ERROR: 7
Error installing zip file '/sdcard/Download/addonsu-
16.0-arm-signed.zip'
...

twrp seems work fine, i can flash los and gapps without problem...

thank you

Hello,
I successfully installed the addonsu-16.0-arm64 using
TWRP
You have to enable root in Developer options. Works fine...

 

[Fjord1]

Hi there,
which TWRP can I use to downgrade to Oreo via HuRupdater?
Thanks.

 

[-Alf-]

Hi there,
which TWRP can I use to downgrade to Oreo via HuRupdater?
Thanks.

3.2.1-0 by pretoriano80 .
Note: If you don't have the required files stored somewhere, then it's just an academic question - Firmware finder is ďead.

 

[Fjord1]

Firmware finder is ďead.

It makes me sad...
And what about dload method?

 

[-Alf-]

downgrade to Oreo

dload method

you will get absolutely no success, it may even brick your phone.

 

[fragtion]

Hi all. I am trying to recover content from a MediaTab T5 with a Damaged screen (no picture). I've managed to install these recoveries and reboot into them. However none of them provide an adb interface for shell access, only a virtual usb cd rom drive appears. How can I obtain recovery adb access? I need to enable USB debugging and push adbkey...

Anyone have any clues how I can work around this please. Is patched boot img the only way forward?

OK good news I Successfully booted into recovery and have adb access. I think the key was to power on with vol+, but WITHOUT the USB cable attached. If USB cable is attached then it tries to boot to system regardless

 

[Mahad Habib]

Hello,
I never use Nandroid backup, so I don't know. Test it and let us know

hi, I was just wondering incase something goes wrong, can you link me some thread or guide to go back to stock firmware (I do have the full firmware files)

 

[-Alf-]

hi, I was just wondering incase something goes wrong, can you link me some thread or guide to go back to stock firmware (I do have the full firmware files)

I'm not sure I fully understand your question :
- go back to stock from custom ROM?
- what full FW do you have?

 

[Mahad Habib]

I'm not sure I fully understand your question :
- go back to stock from custom ROM?
- what full FW do you have?

yes that's my question.
the one I have is
"Huawei P20 Lite ANE-L21 Anne-L21 8.0.0.144(C185) Firmware Android 8.0.0 EMUI 8.0.0"
I know this works because I used it to downgrade.

 

[-Alf-]

yes that's my question.
the one I have is
"Huawei P20 Lite ANE-L21 Anne-L21 8.0.0.144(C185) Firmware Android 8.0.0 EMUI 8.0.0"
I know this works because I used it to downgrade.

Yes, you can revert to stock flashing this Service ROM , if yot are running EMUI 8. For EMUI 9.1 use Service ROM 9.1.0. This process will erase all your data and lock the BL again!

Or, simply flash SYSTEM.img extracted from Service ROM using Huawei
update extractor. This procedure will not erase your data ,bootloader remains unlocked etc.

 

[hopeless_bricker]

Hey Alf,

Were you able to flash any of the recoveries over the erecovery?
The 3.2.1-0 GAGUGA Edition has a built in option but it didn't work for me, no failures but when I hold down vol + I still get erecovery. I tried flashing 3.4.0-0-emui9_eR by @S_mak to erecovery_ramdisk but got a command not allowed.

PRA-LX1 on a C432 base, got CAOS11 system and Magisk in recovery. Since the recovery partition is occupied by Magisk having TWRP on erecovery would be ideal.

Thank you for your posts, they've been useful.

 

[-Alf-]

Hey Alf,

Were you able to flash any of the recoveries over the erecovery?
The 3.2.1-0 GAGUGA Edition has a built in option but it didn't work for me, no failures but when I hold down vol + I still get erecovery. I tried flashing 3.4.0-0-emui9_eR by @S_mak to erecovery_ramdisk but got a command not allowed.

PRA-LX1 on a C432 base, got CAOS11 system and Magisk in recovery. Since the recovery partition is occupied by Magisk having TWRP on erecovery would be ideal.

Thank you for your posts, they've been useful.

flash TWRP , run command
fastboot flash recovery_ramdisk (TWRP's_name).img
(Since A8 and above you can not install TWRP over eRecovery from fastboot, only from TWRP),
- Copy TWRP file to the SD card, and also copy to card Stock Recovery_ramdisk.
- Enter TWRP, select storage - SD Card, select "Install image", find TWRP file and mark eRecovery, swipe.
- Go back, find Stock recovery_ramdisk file, (or magisk-patched recovery_ramdisk on EMUI 9) , mark Recovery, swipe. Reboot system.

P.S.: as far as i know the PRA-LX1 hasn't received an upgrade to Pie (correct me if I'm wrong) , so i don't understand

Since the recovery partition is occupied by Magisk

 

[hopeless_bricker]

flash TWRP , run command
fastboot flash recovery_ramdisk (TWRP's_name).img
(Since A8 and above you can not install TWRP over eRecovery from fastboot, only from TWRP),
- Copy TWRP file to the SD card, and also copy to card Stock Recovery_ramdisk.
- Enter TWRP, select storage - SD Card, select "Install image", find TWRP file and mark eRecovery, swipe.
- Go back, find Stock recovery_ramdisk file, (or magisk-patched recovery_ramdisk on EMUI 9) , mark Recovery, swipe. Reboot system.

P.S.: as far as i know the PRA-LX1 hasn't received an upgrade to Pie (correct me if I'm wrong) , so i don't understand

I got it wrong, it's a ANE-LX3! Mixed up with my other phone, sorry. In principle that method works, thank you. I didn't get to actually test it because it seems the Magisk recovery overrides the boot procedure so it always boots to recovery automatically.

Handy but I can't boot into the erecovery with the button combo now.

P.S.: I'm having issues with audio device switching. If I get a phone call with headphones inserted it routes to the speaker and I can't change it. If I remove the headphones then the mic doesn't work. I also have a bit inconsistent connection over bluetooth, sometimes it is connected but still plays over the speakers. I have the Huawei switch method enabled in the phh options. Did you experience this?