Restore official Firmware after brick - Huawei P20 Lite Questions & Answers

Hello,
I'm really sorry to bother you on this subject but I can't get my P20lite back to the original firmware.
I tried to downgrade my phone with the firmware "Huawei P20 Lite ANE-LX1 ANE-L21 hw eu Anne-L21 8.0.0.150(C432) Firmware 8.0.0 r1 EMUI8.0" but since then I can't do anything. I can only access the erecovry. I can't do a wipe and multi-tool tells me that :
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Could you please direct me?
Thanks

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BenouLM said:
I tried to downgrade my phone with the firmware "Huawei P20 Lite ANE-LX1 ANE-L21 hw eu Anne-L21 8.0.0.150(C432) Firmware 8.0.0 r1 EMUI8.0" but since then I can't do anything.
View attachment 5376427
Click to expand...
Click to collapse
Downgrade from EMUI 9.1 to EMUI 8 is possible through HiSuite only , or, if your bootloader is unloced, through TWRP and HuRupdater.
In fastboot mode run commands:
fastboot oem get-build-number
fastboot oem get-product-model
fastboot getvar vendorcountry
fastboot oem oeminforead-CUSTOM_VERSION
fastboot oem oeminforead-SYSTEM_VERSION
and post the results.

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-Alf- said:
fastboot oem get-build-number
Click to expand...
Click to collapse
(bootloader) :ANE-LGRP2-OVS 9.1.0.208
OKAY [ 0.016s]
Finished. Total time: 0.016s
Thx for your help
-Alf- said:
fastboot oem get-product-model
Click to expand...
Click to collapse
(bootloader) ANE-LX1
OKAY [ 0.000s]
Finished. Total time: 0.000s
-Alf- said:
fastboot getvar vendorcountry
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Click to collapse
vendorcountry: orange/all
Finished. Total time: 0.016s
-Alf- said:
fastboot oem oeminforead-CUSTOM_VERSION
Click to expand...
Click to collapse
FAILED (remote: 'Read oeminfo failed!')
fastboot: error: Command failed
-Alf- said:
fastboot oem oeminforead-SYSTEM_VERSION
Click to expand...
Click to collapse
(bootloader) :ANE-LX1 8.0.0.155(C109)
OKAY [ 0.007s]
Finished. Total time: 0.009s

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BenouLM said:
I tried to downgrade my phone with the firmware "Huawei P20 Lite ANE-LX1 ANE-L21 hw eu Anne-L21 8.0.0.150(C432)
Click to expand...
Click to collapse
If I not mistaken, your region is orange all C109 , for example this one
https://androidhost.ru/TU9
But this is Oreo firmware, at the moment you need flash Pie firmware for region orange all C109 , IMO. Try google it.

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-Alf- said:
But this is Oreo firmware, at the moment you need flash Pie firmware for region orange all C109 , IMO. Try google it.
Click to expand...
Click to collapse
Thx but how should i try? what should i write?

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Here?

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BenouLM said:
Here?
Click to expand...
Click to collapse
I'm not sure, but you can try it.

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Nvm

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Btw, have you tried update via eRecovery and WiFi? ("download latest version and recovery")

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-Alf- said:
Btw, have you tried update via eRecovery and WiFi? ("download latest version and recovery")
Click to expand...
Click to collapse
yes but it crashes

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-Alf- said:
Btw, have you tried update via eRecovery and WiFi? ("download latest version and recovery")
Click to expand...
Click to collapse
Thank you for your help. I succeeded in installing the firmware I put above
Now I have another problem, this phone is from a recycling recovery. They wanted to destroy it because the battery was dead. I changed the battery but I'm facing a google ID.
I have to do a bypass, do you have any idea?

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BenouLM said:
I have to do a bypass, do you have any idea?
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Click to collapse
Bypass via safe mode should work, but it depends on build number, region etc.
https://frpbypass.net/frp-unlock-huawei-p20-lite-ane-lx1-downgrade-file-via-safe-mode/

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-Alf- said:
Bypass via safe mode should work, but it depends on build number, region etc.
https://frpbypass.net/frp-unlock-huawei-p20-lite-ane-lx1-downgrade-file-via-safe-mode/
Click to expand...
Click to collapse
Yes it's works ! thx
Now all I have to do is sim unlock my Galaxy s5 and get the fingerprint reader from my Galaxy A50 and I'll have done the rest of the phone problems (I recycle phones that go to the scrap yard.)
Thanks a lot to you