[Huawei P40 Pro Guides, News, & Discussion] mattwhite7102:
Hey Everyone!

i recently got a huawei P40 Pro, and was really dissapointed to find out we people in the UK didnt get GMS on newer huawei devices and tried all the methods to downgrade my P40 pro to emui 10 but i recently found a way to succesufully downgrade back to emui 10!

NOTES:

You can only downgrade back to 10.1.0.121 but that would be sufficient enough to install GMS

When downgrading back to 10.1.0.121 you will lose USB connectivity but you can either use the USB OTG method or the huawei browser for this tutorial

after downgrade and installation of GMS, google wallet would never work as it relies on safetynet and the device being play protect certified so you wont be able to pay in shops, but huawei wallet and curve will still work

Lets Begin!

I AM NOT RESPONSIBLE FOR BRICKED DEVICES OR LACK OF HUMAN DECEINTY BECAUSE YOU DIDNT READ IT PROPERLY

Requirements:

A USB-C OTG adaptor (i find the quick switch usb otg adaptor you get in google pixel boxes works really well, if you cant get one any sort of usb otg dongle would work from ebay or borrow one from a friend because you gonna need it as a requirement)

A Windows Computer

A huawei p40 pro (obviously)

STEPS:

1. if your running EMUI 12.0.0.xxx you will need to downgrade back to emui 11.0.0.260, you can just use the normal hisuite downgrade method by going into once you connected your phone

Update > Switch to other version > roll back

2. once you downgraded back to emui 11.0.260 you can use the dload method here to downgrade to the 230 release, that will allow you to downgrade further back to emui 10 because it skips the antirollback mechanism implemented into newer EMUI releases

3. once you downgraded back to the 230 release we can downgrade further

download these three files and keep them somewhere safe and accessible for later

Hisuite 10 here (DO NOT OPEN THIS FILE YET YOU WILL NEED IT FOR LATER)

Hisuite 11 here (INSTALL THIS VERSION FIRST)

HIsuite Proxy here (Use this version as i had better luck with this version)

Now follow these steps carefully to get hisuite running properly

once hisuite 11 is installed dont open it just yet, it will ask for an update, DONT update at all, all you need this version for is the app on the phone

once you connect your phone to hisuite to install the apk and it installs successfully, uninstall hisuite 11, by running the hisuite 10 installation (do not uninstall via programs and features, use hisuite 10 installation package to uninstall hisuite 11)

Once hisuite 10 is installed, dont open it yet and launch hisuite proxy, keep it open or minimised into the taskbar and go to this website to get the required files necessary as shown below, also acitivate an ad blocker as well as youll have to put up with a few annoying spammy ads

ELS-LGRP4-OVS 10.1.0.121​

ELS-N29-PRELOAD 10.1.0.1(C432R4)​

ELS-N29-CUST 10.1.0.8(C432)​

Once these files are put into hisuite proxy select "Rollback OS" But dont select "Force Auth Bridge" as that tends to crash hisuite

Click SETUP to kick in hisuite proxy

once the logs appear all green and some yellow (Dont worry thats perfectly normal) Open hisuite by the windows menu or desktop

4. Connect your phone to hisuite and input the code shown on the phone

5. then once hisuite detects your device, go to update > switch to other version (if for any reason it says "no internet connection" please reboot your computer) and should show 10.1.0.121 as an update you can downgrade to, go ahead and downgrade to that version

6. once you downgraded to the version, download these bunch of APKs here but we only really need the GMS file in the zip file, the rest we dont need

7. get googlefier here and install on the device, once installed follow the instructions in googlefier to get past the first step

IMPORTANT: Now, when you install and get past the date setting screen you will notice you cant proceed any further, how to fix that is to install a modified version of microG for huawei devices in the ZIP file i told you to get earlier that has a bunch of APKs once that installs you should be able to get past the first step

8. once you install all google play stuff youll get constantly bombarded by notifications saying "Play services require an action" Heres how you can fix it

1. go to settings > apps > show system processors > google account manager and force stop the app and clear data

2. do the same with the google play store

3. do the same once again with google services framework

reboot device

go to where you saved the zip file earlier and install GMS.apk

go back into settings > apps > show system processors and then force stop google account manager and clear data

go back to google play, force stop and clear data

go back to google services framework, force stop and clear data

reboot device

google play should be fully working without that annoying "play services requires an action" notification but you will see "this device is not play protect certified" heres how you can fix it by the video down below

now your device should be downgraded and has all the google play services installed and fully working!

even if you choose to update to emui 12 youll still keep all your GMS stuff, tested that on my P40 pro running 12.0.0.270 and with the patch01 update

I HOPE THIS HELPS YOU!