no usb connection after downgrade to 10.0 - Huawei Mate 20 Pro Questions & Answers

hi all
i downgraded my mate 20 pro lya-l29 to emui 10.0, and now hisuit is not detecting it , i wanted to downgrad it again to 9.1 with otg but it says install failed due to incompatible system version
i dont want to update to 11 again with wifi
is there any solution to downgrad to 9.1 ?

Same problem here. Any update further?

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Verizon update

Hey so I have the mate 10 pro for a while now and I keep seeing that it's possible to upgrade the phone from Android 8.0 and emui 8.0 to 9.0
How can I do that ? From the phone it says that I don't have any update

Mate 10 Pro BLA L29 Downgrade from Android 9.1 to Android 8.0

Hi Guys I need your help in downgrading my Mate 10 Pro BLA-L29 from EMUI 9.1 to EMUI 8. I bought the device from middle east but I am using device now in India. Reason for downgrade is I am not able to use VOLTE services on any of Indian networks on EMUI 9 AND 10, whereas it was working fine on EMUI 8.
I can downgrade from 10 to 9 Via Hisuite but there is no further option to rollback to Emui 8 via Hisuite. I tried downloading stock firmware for Emui 8.0 and tried via recovery mode but installation failed for downgrade.
I need your help guys as many are experts here.
Many thanks to all who can and will support me on this.

honor 9 rollback

Hi,
I need help I have a honor 9 (STF-L09 8.0.0.385C482) I downgrade twice 9.1 to 9.0 and 9.0 to 8.0.0.385 with hisuite.
But I can't rollback anymore, I need to rollback to under below 8.0.0.367.
I tried multiple software like
Hisuite 9.0.3 : no more option previous version
Firmware finder : (incompatible or failed update) with sd card and folder dload >> update.app
Hisuite proxy : download firmware but when it's installing I have error message no connexion
I tried to extract update.app and tried to flash system but my bootloader is locked so impossible to flash it.
Anybody have maybe a firmware to rollback below 8.0.0.367 or in emui 5.1 ?
You cant downgrade under below first GPU turbo firmware.
rambik33 said:
You cant downgrade under below first GPU turbo firmware.
Click to expand...
Click to collapse
You mean 8.0.0.385 is the first implementation of GPU turbo feature ? So i cant downgrade below ?
But i read it's from 8.0.0.355 the first GPU turbo added on honor 9.
https://nerdschalk.com/honor-9-and-v9-update-gpu-turbo/

Huawei p40 pro update fix

Hi guys, i've downgrade my huawei p40 pro from emui 11.0.0.151 (C432E3R5P3) to emui 10..1.0.121 (C432E8R5P2) and succesfull install googlefier.. but the problem now is i can't upgrade to emui 11... i think because the version of my actual fw (C432E8R5P2) is missmatch with my phone (C432E3R5P3)... anyone have emui 11.0.0.151 (C432E3R5P3) to upgrade? or if you have any other solution.... thanks
no one? all people are without ota updates like me?
GigaSonic said:
Hi guys, i've downgrade my huawei p40 pro from emui 11.0.0.151 (C432E3R5P3) to emui 10..1.0.121 (C432E8R5P2) and succesfull install googlefier.. but the problem now is i can't upgrade to emui 11... i think because the version of my actual fw (C432E8R5P2) is missmatch with my phone (C432E3R5P3)... anyone have emui 11.0.0.151 (C432E3R5P3) to upgrade? or if you have any other solution.... thanks
Click to expand...
Click to collapse
I'll try to help you as soon as I get the same FW C432E3R5P3.
Would you be kind enough to send me a link where I can download the same FW version please?

Is it possible to rollback EMUI 11.0 to 9.1 via HiSuite?

Just wondering if it is possible to rollback EMUI 11 to 10.1, then to 10.0 then to 9.1 via HiSuite. Anyone tried it? Thanks
Hi.. I have tried myself with success. But from the newest 11 to 10.1 it was a bit tricky. I did that manually using update option from the service menu. Then with the right firmware on memory card i could force phone to go to the 10.1 version. From there Hisuite works fine and You can go down to 9.0

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