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GMS on latest Emui 11.0.0.223 (C432E3R5P3) and how to get back to older firmware [WORKING]

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Wlk

Senior Member
Aug 7, 2007
234
16
Prague
Just to confirm success, I have P40 Pro updated to latest firmware 11.0.0.223 and working GMS. For half of the day now, installing everything I want.

First i did FW downgrade to 10.1.0.131 and applying lzplay manually (you can use Goglefier, same result) using this great guide

Then used OTA updates to get phone to latest available FW which was I think 11.0.0.198. Then used official HiSuite to apply three more updates to end with 11.0.0.223

Then I followed this latest guide to fix GMS. I did one additional trick - disabling internet during whole process. What I learned during first try is that when you apply fixes (mainly downgrading GMS), phone sometimes manages to uprate these back. Because Play Store is by default set to update automatically. And it messes whole proces leaving you with idea that it doesnt work. It works fine, you just need to have correct versions of GMS modules.
After finishing with video guide, I enabled internet for brief moment to load Play store. As soon as it is loaded just disable internet again. Go to settings of Play Store and in Settings > Network Preferences set Auto-update apps to Dont auto-update apps. Which hopefully stops GMS updates in background. And keeps them running till Google finds out and makes updates enforced in next version regardless of auto-update settings...

UPDATE after week of using phone: GMS hacked in phone worked, but notifications coming through Google push services did not. I tried few available solutions but none of these did the job. At the end I used Ilham solution provided by Badmania98 in his thread. And it is working for over week now without any glitches. Notifications coming through. There are some minor issues like Gmain dark mode not working, but nothing gamebreaking. Cheers to Badmania98 for his help!
 
Last edited:

Wlk

Senior Member
Aug 7, 2007
234
16
Prague
UPDATE2 Tried to downgrade through Hisuite proxy, using 10.0.1.100_OVE and it keeps failing after download. Says just Update failed. I hope that I identified properly my phone according to guide

Base sw ver ELS-LGRP4-OVS 11.0.0.223
Preload sw ver ELS-N29-PRELOAD 11.0.0.3(C432R5)
Cust software (C432)

Tried to downgrade to
Emui 10 .131 - fails without downloading
Emui 11 .151, .168, .186 - fails after download just by msg Update failed

Is Hisuite 10.0.1.100_OVE version enough to process Emui 11 firmwares?

UPDATE3 So Hisuite 10.0.1.100_OVE cant downgrade to Emui 10 from 11 according to this post by author of Hisuite Proxy. By using latest version of Proxy from author website and by selecting fw 11.0.0.151 I got it working and downgrading from .223 to .151 - now I hope it will be possible to go down to Emui 10 by official Hisuite.

Slowly progressing back to beginning :)

UPDATE4 sooo after successfully flashing with recommended HiSuite 10.1.0.550 and latest Proxy to fw 11.0.0.151 I ended up in eRecovery mode automatically downloading 11.0.0.202 through wifi. Hope it will work else I have softbricked phone...
 
Last edited:

highfb

Member
Apr 8, 2014
24
0
Same issue for me too, spend my whole sunday to find a way but nothing works it seems…
 

Wlk

Senior Member
Aug 7, 2007
234
16
Prague
UPDATE5 WiFi eRecovery worked like charm upgrading to .208

Seems that using latest proxy and hisuite to downgrade should work, confirmed by ProfessorJTJ. I just forgot to set proxy to rollback os option. It should be enough to "Wipe cache & data from erecovery" to boot .151

Trying again with downloaded .168 - too lazy to wait again for .151 to download (it got deleted by hisuite after update). We will see... and it worked fine. Selecting rollback os option added factory reset after installation and phone booted .168 just fine.
 
Last edited:

ish4d0w123

Senior Member
Feb 21, 2020
59
12
Anyone managed to run GMS on latest update?
Yes, it works fine.
With push notification working?
You need to freeze GSF for that but then you lose the Play store and enhanced Google location services.
Unfortunately I had it working but let my phone update to .223 and it now says that
Don't worry this has nothing to do with your system update, this is something else. This is a new security check added by Google in their fight against unofficial GMS installations. It would have happened even if you didn't update your system. Actually it is happening to EMUI10 users too so....
This Device Isn’t Play Protect Certified.
That is an invalidated Play Certificate that you need to regenerate. Yes, it was probably valid for a while, then it got invalidated.
No, you don't have to follow that tutorial exactly.
Even GMS app versions on my phone doesnt match these on video - mine are newer.
Well you just found out the issue. Your apps, more specifically ONE of them is just too new: Google Play Services. It has enhanced detection for these kinds of hacks it seems, and it will bust your play certificate.
Tried even to remove whole GMS
Don't do that.
and reinstall these from older fix,
Don't do that either.
to downgrade app versions.
Yes, that's almost what you need to do. But you only need to downgrade one of them.
probably updated in background?
That is correct, Google Play Services tends to get updated and as such, this issue prevails. Prevent it from being so.
Any tips on working guide?
Guys, you are doing it totally wrong. There is NO NEED TO DOWNGRADE your system software if you already have GMS installed. This has nothing to do with your system software version and you don't actually have to re-trigger the GMS installation (rights elevation/lzplay) exploit.

You just need to fix your Play certificate to stop those annoying play protect messages.
Yes, they added additional verifications. Yes, that was probably targeted against this hack, among others.

What you need is simply to download this pack:

And then uninstall Google Play Services
then install this one: 7-GSM Play Protect certified Fix.apk
Then reboot
And the spam notifications should be gone.
Replacing Google Play Services with this app will force-regenerate your Play certificate,
and this version of Google Play Services does not have the problematic check in question.
Still you should NOT update Google Play Services as the latest version DOES have the check that will trigger this event again.

You do NOT NEED to install anything else from this pack.
Actually you could reupload this with only this file present.
UPDATE Hisuite is now missing option to go down to emui 10. Direct OTG update to 10.x doesnt work either, firmware is not accepted. Interesting...
Yes, it is missing that option. It is not supported anymore, and if you force it, you WILL HAVE PROBLEMS.

If you REALLY want to downgrade you can use HiSuiteProxy and an older version of HiSuite. However I don't recommend this for 3 reasons:
- it is unneccessary
- it is dangerous. You WILL lose USB connectivity after the upgrade, and you can only regain it when you update again to the latest system software version. And you can only do it with OTA.
- You can very easily brick your phone if you use HiSuiteProxy as it bypasses many of the firmware validation checks
+1 Huawei is changing things around with the latest HiSuite. Older versions will not work for software updates/downgrades for much longer.
 

ish4d0w123

Senior Member
Feb 21, 2020
59
12
10.0.1.100_OVE and it keeps failing after download.
Of course it keeps failing. 10.0.1.100 is NOT USABLE anymore. Bender007 is too lazy to update it in his guide. You need a different version 10.0.1.550 (grab it here https://github.com/ProfessorJTJ/HISuite-Proxy/releases/download/2.3.5/Hisuite_10.1.0.550_OVE.zip ) this one works for HiSuiteProxy and EMUI 11 tested up to 11.0.0.203.
However I would highly recommend AGAINST downgrading as it is dangerous and completely unneccessary if you already have GMS installed. It doesn't matter if you have the play protect error message or not, you can fix that without downgrading. There is only one case when you need to downgrade and that is if you don't have google apps installed at all.

Says just Update failed. I hope that I identified properly my phone according to guide

Base sw ver ELS-LGRP4-OVS 11.0.0.223
Preload sw ver ELS-N29-PRELOAD 11.0.0.3(C432R5)
Cust software (C432)
My version info , The config I needed . Your phone model and build is identical to me. Preload (R4/R5/R6) does not matter, as it only differs in preinstalled apps. You can use the packs from huaweifirmware that I have in the pictures.
Tried to downgrade to
Emui 10 .131 - fails without downloading
Go with 10.1.0.121 , select the combination I have above, and most of all: use 10.0.1.550 for it.

Is Hisuite 10.0.1.100_OVE version enough to process Emui 11 firmwares?
No. You need 10.0.1.550 for downgrades.
UPDATE3 So Hisuite 10.0.1.100_OVE cant downgrade to Emui 10 from 11 according to this post by author of Hisuite Proxy. By using latest version of Proxy from author website and by selecting fw 11.0.0.151 I got it working and downgrading from .223 to .151 - now I hope it will be possible to go down to Emui 10 by official Hisuite.
You can do it but you won't have USB.
Slowly progressing back to beginning :)

UPDATE4 sooo after successfully flashing with recommended HiSuite 10.1.0.550 and latest Proxy to fw 11.0.0.151 I ended up in eRecovery mode automatically downloading 11.0.0.202 through wifi.
You messed it up. YOu should have gone directly to EMUI 10 using proxy. 11.0.0.151 is not suitable for downgrades, it is not a rollbackable firmware. Now your only option is for eRecovery to fix it for you as you wouldn't have USB anyway. So you go to the latest version of EMUI 11 and THEN directly go down to EMUI 10, 10.1.0.121.
Hope it will work else I have softbricked phone...
You will if you keep jumping corners. Don't try to experiment, this is dangerous enough already.


Once again, if you have Google apps installed already, then it is absolutely UNNECCESSARY TO DOWNGRADE YOUR SYSTEM SOFTWARE. You can fix play protect errors very easily by just replacing an app on your phone. Why you guys would want to go through the whole downgrade process all over again is something I don't get. But, whatever you prefer :)
 

Wlk

Senior Member
Aug 7, 2007
234
16
Prague
Thanks for great explanation, hands down! Meanwhile I managed to directly downgrade phone to 10.1.0.131 and lzplay it and now going up through fw updates. Next time I will focus directly on fixing GMS, geting bit more experienced with this every step :)
 

ish4d0w123

Senior Member
Feb 21, 2020
59
12
You're welcome! Enjoy the experience and remember: keep it calm!
YOu can fix almost ALL issues that can arise with GMS without ever downgrading again. This is because the only thing you really need the downgrade for is to enable elevated privileges for the google apps (this is what that weird lzplay app does) and you only need to do that once.
The only thing you shouldn't do is a factory data reset as it would obviously wipe away these permissions too, in which case you would have to do a downgrade, but not in any other case.

Play protect certificates keep getting invalidated from time to time, because Google is stepping up their mechanism. But see, the scene already has fixes for it. And in this case you just need to replace an app.

Of course now, that you're doing a full downgrade+upgrade, and doing all the Googlefier stuff again, make double sure that you launched LZPLAY app as soon as it was installed as you can only do that on old versions of EMUI10. Once lzplay is loaded and given the special permissions it asks for, and googlefier having completed all of its steps, you're good to update

But don't ever update Google Play Services as that seems to be what is breaking the Google Play certificates, causing the error messages. If you did update it anyway, you can use 7-GSM Play Protect certified Fix.apk from this pack link to fix it.
First uninstall Google Play Services then install this replacement app.
 
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Wlk

Senior Member
Aug 7, 2007
234
16
Prague
Just to confirm success, I have P40 Pro updated to latest firmware 11.0.0.223 and working GMS. For half of the day now, installing everything I want.

First i did FW downgrade to 10.1.0.131 and applying lzplay manually (you can use Goglefier, same result) using this great guide

Then used OTA updates to get phone to latest available FW which was I think 11.0.0.198. Then used official HiSuite to apply three more updates to end with 11.0.0.223

Then I followed this latest guide to fix GMS. I did one additional trick - disabling internet during whole process. What I learned during first try is that when you apply fixes (mainly downgrading GMS), phone sometimes manages to uprate these back. Because Play Store is by default set to update automatically. And it messes whole proces leaving you with idea that it doesnt work. It works fine, you just need to have correct versions of GMS modules.
After finishing with video guide, I enabled internet for brief moment to load Play store. As soon as it is loaded just disable internet again. Go to settings of Play Store and in Settings > Network Preferences set Auto-update apps to Dont auto-update apps. Which hopefully stops GMS updates in background. And keeps them running till Google finds out and makes updates enforced in next version regardless of auto-update settings...

UPDATE after week of using phone: GMS hacked in phone worked, but notifications coming through Google push services did not. I tried few available solutions but none of these did the job. At the end I used Ilham solution provided by Badmania98 in his thread. And it is working for over week now without any glitches. Notifications coming through. There are some minor issues like Gmain dark mode not working, but nothing gamebreaking. Cheers to Badmania98 for his help!
 
Last edited:
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adrovek

New member
Aug 30, 2014
2
1
You just need to fix your Play certificate to stop those annoying play protect messages.
Yes, they added additional verifications. Yes, that was probably targeted against this hack, among others.

What you need is simply to download this pack:

And then uninstall Google Play Services
then install this one: 7-GSM Play Protect certified Fix.apk
Then reboot
And the spam notifications should be gone.
Replacing Google Play Services with this app will force-regenerate your Play certificate,
and this version of Google Play Services does not have the problematic check in question.
Still you should NOT update Google Play Services as the latest version DOES have the check that will trigger this event again.

You do NOT NEED to install anything else from this pack.
Actually you could reupload this with only this file present.

Yes, it is missing that option. It is not supported anymore, and if you force it, you WILL HAVE PROBLEMS.

If you REALLY want to downgrade you can use HiSuiteProxy and an older version of HiSuite. However I don't recommend this for 3 reasons:
- it is unneccessary
- it is dangerous. You WILL lose USB connectivity after the upgrade, and you can only regain it when you update again to the latest system software version. And you can only do it with OTA.
- You can very easily brick your phone if you use HiSuiteProxy as it bypasses many of the firmware validation checks
+1 Huawei is changing things around with the latest HiSuite. Older versions will not work for software updates/downgrades for much longer.

I got this error device not Play Store Licensed/Approved...

This fixed my issue on p40 pro, els-n29 c432r5, emui 11.0.150

Thank you!
 
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Wlk

Senior Member
Aug 7, 2007
234
16
Prague
Found out more stuff now. Unfortunately run into problem with not working push notifications - at least some of them. Gmail is not syncing at all, I have to manually pull down to get new emails. And so it wont show notifications for new emails. But for example Messenger Lite sometimes works. Sometimes not.

Tried first push notification fix option from this post - with ADB commands. And ended up with no GSF ID, so Play store stop working and I had to go again through this latest guide to fix GMS. No idea why I didnt get new GSF ID after restart, but tried few times and still same result.

Dont want to try second option with freezing GSF as I would like to have working Play store.

Thinking about payed third :)
 

highfb

Member
Apr 8, 2014
24
0
Of course it keeps failing. 10.0.1.100 is NOT USABLE anymore. Bender007 is too lazy to update it in his guide. You need a different version 10.0.1.550 (grab it here https://github.com/ProfessorJTJ/HISuite-Proxy/releases/download/2.3.5/Hisuite_10.1.0.550_OVE.zip ) this one works for HiSuiteProxy and EMUI 11 tested up to 11.0.0.203.
However I would highly recommend AGAINST downgrading as it is dangerous and completely unneccessary if you already have GMS installed. It doesn't matter if you have the play protect error message or not, you can fix that without downgrading. There is only one case when you need to downgrade and that is if you don't have google apps installed at all.


My version info , The config I needed . Your phone model and build is identical to me. Preload (R4/R5/R6) does not matter, as it only differs in preinstalled apps. You can use the packs from huaweifirmware that I have in the pictures.

Go with 10.1.0.121 , select the combination I have above, and most of all: use 10.0.1.550 for it.


No. You need 10.0.1.550 for downgrades.

You can do it but you won't have USB.

You messed it up. YOu should have gone directly to EMUI 10 using proxy. 11.0.0.151 is not suitable for downgrades, it is not a rollbackable firmware. Now your only option is for eRecovery to fix it for you as you wouldn't have USB anyway. So you go to the latest version of EMUI 11 and THEN directly go down to EMUI 10, 10.1.0.121.

You will if you keep jumping corners. Don't try to experiment, this is dangerous enough already.


Once again, if you have Google apps installed already, then it is absolutely UNNECCESSARY TO DOWNGRADE YOUR SYSTEM SOFTWARE. You can fix play protect errors very easily by just replacing an app on your phone. Why you guys would want to go through the whole downgrade process all over again is something I don't get. But, whatever you prefer :)
Thanks for detailed instructions but here’s the deal. I have a p40 pro with EMUI 11.0.0.202 loaded onboard. It’s been factory reseted. I need to downgrade to install gms on this device but could’nt downgrade with hisuite proxy. I used latest version mentioned above and use Hisuit 10.0.1.550, 11.0.0.151 and even latest version but it keeps downloading but on the phone when it starts verifying update and installing it stops and enter erevocery mode.

I am doing exactly as you mentioned and searched for several threads, but nothing helped.

What should I do now?

Thanks for support
 

ish4d0w123

Senior Member
Feb 21, 2020
59
12
Found out more stuff now. Unfortunately run into problem with not working push notifications - at least some of them. Gmail is not syncing at all, I have to manually pull down to get new emails. And so it wont show notifications for new emails. But for example Messenger Lite sometimes works. Sometimes not.
GMail real-time notifications and sync will not work, no matter what you do. You can force it to manually refresh more often with MacroDroid but this will drain your battery. I suggest you find a different email app that has push imap, for instance BLueMail can do this with gmail accounts.
Tried first push notification fix option from this post - with ADB commands. And ended up with no GSF ID, so Play store stop working and I had to go again through this latest guide to fix GMS. No idea why I didnt get new GSF ID after restart, but tried few times and still same result.
You can try the patched Google play services app that is in my previous post, to generate a new GSF ID.
Dont want to try second option with freezing GSF as I would like to have working Play store.
Then you need to regenerate a GSF ID. YOu don't need to do the whole process again, but you need to replace APK files. Use the patched Google Play Services app that is in my previous post, and reboot after it is installed. If it doesn't fix it then you need the full ictfix package as per the video. But STILL you don't need to downgrade.(in most cases)
Thinking about payed third :)
Negative copy, come again.
Thanks for detailed instructions but here’s the deal. I have a p40 pro with EMUI 11.0.0.202 loaded onboard. It’s been factory reseted. I need to downgrade to install gms on this device but could’nt downgrade with hisuite proxy. I used latest version mentioned above and use Hisuit 10.0.1.550, 11.0.0.151 and even latest version but it keeps downloading but on the phone when it starts verifying update and installing it stops and enter erevocery mode.
First, let it do erecovery, maybe you messed it up already. erecovery may be able to fix it to give you a clean start. You WILL want a clean start or you're risking a brick.
Then when it is done, use HiSuite 10.0.1.550 and select the proper firmware combo from Hisuiteproxy and huaweifirmware, as obivously you're using the wrong ones. Oh and don't forget to check "ROLLBACK OS"
I am doing exactly as you mentioned and searched for several threads, but nothing helped.

What should I do now?

Thanks for support
you didn't use it exactly, you're using the wrong firmware
 

highfb

Member
Apr 8, 2014
24
0
GMail real-time notifications and sync will not work, no matter what you do. You can force it to manually refresh more often with MacroDroid but this will drain your battery. I suggest you find a different email app that has push imap, for instance BLueMail can do this with gmail accounts.

You can try the patched Google play services app that is in my previous post, to generate a new GSF ID.

Then you need to regenerate a GSF ID. YOu don't need to do the whole process again, but you need to replace APK files. Use the patched Google Play Services app that is in my previous post, and reboot after it is installed. If it doesn't fix it then you need the full ictfix package as per the video. But STILL you don't need to downgrade.(in most cases)

Negative copy, come again.

First, let it do erecovery, maybe you messed it up already. erecovery may be able to fix it to give you a clean start. You WILL want a clean start or you're risking a brick.
Then when it is done, use HiSuite 10.0.1.550 and select the proper firmware combo from Hisuiteproxy and huaweifirmware, as obivously you're using the wrong ones. Oh and don't forget to check "ROLLBACK OS"

you didn't use it exactly, you're using the wrong firmware

Hi again,

watch the video you've sent and did exactly what he says, at the end I got software install failed screen.

I am also sending you veneer info, and the rom, cust and preload I choose.

And also checked roll back OS option.

Hope you can help me..

I am so close to throw this phone away :(
 

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Wlk

Senior Member
Aug 7, 2007
234
16
Prague
I went down to 10.1.0.131 because of LZ Play install. It wont work in 10.1.0.176...
Other than that everything seems to me fine, cust/preload are selected correctly.
 

piotrpg

Member
Nov 11, 2012
20
1
warszawa
Huawei P40 Pro
Hello, after upgrading to version 10.131 I lost my fast charging and connection to my computer. According to the guide, I updated by erecovery to version only 10.176. I can't upload a newer version in any way. Huawei p40 pro
 

Wlk

Senior Member
Aug 7, 2007
234
16
Prague
Use Huawei Support app or My Huawei if it is updated, it should offer update by OTA. At least it did to me without problems...
 

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  • 2
    Just to confirm success, I have P40 Pro updated to latest firmware 11.0.0.223 and working GMS. For half of the day now, installing everything I want.

    First i did FW downgrade to 10.1.0.131 and applying lzplay manually (you can use Goglefier, same result) using this great guide

    Then used OTA updates to get phone to latest available FW which was I think 11.0.0.198. Then used official HiSuite to apply three more updates to end with 11.0.0.223

    Then I followed this latest guide to fix GMS. I did one additional trick - disabling internet during whole process. What I learned during first try is that when you apply fixes (mainly downgrading GMS), phone sometimes manages to uprate these back. Because Play Store is by default set to update automatically. And it messes whole proces leaving you with idea that it doesnt work. It works fine, you just need to have correct versions of GMS modules.
    After finishing with video guide, I enabled internet for brief moment to load Play store. As soon as it is loaded just disable internet again. Go to settings of Play Store and in Settings > Network Preferences set Auto-update apps to Dont auto-update apps. Which hopefully stops GMS updates in background. And keeps them running till Google finds out and makes updates enforced in next version regardless of auto-update settings...

    UPDATE after week of using phone: GMS hacked in phone worked, but notifications coming through Google push services did not. I tried few available solutions but none of these did the job. At the end I used Ilham solution provided by Badmania98 in his thread. And it is working for over week now without any glitches. Notifications coming through. There are some minor issues like Gmain dark mode not working, but nothing gamebreaking. Cheers to Badmania98 for his help!
    2
    10.0.1.100_OVE and it keeps failing after download.
    Of course it keeps failing. 10.0.1.100 is NOT USABLE anymore. Bender007 is too lazy to update it in his guide. You need a different version 10.0.1.550 (grab it here https://github.com/ProfessorJTJ/HISuite-Proxy/releases/download/2.3.5/Hisuite_10.1.0.550_OVE.zip ) this one works for HiSuiteProxy and EMUI 11 tested up to 11.0.0.203.
    However I would highly recommend AGAINST downgrading as it is dangerous and completely unneccessary if you already have GMS installed. It doesn't matter if you have the play protect error message or not, you can fix that without downgrading. There is only one case when you need to downgrade and that is if you don't have google apps installed at all.

    Says just Update failed. I hope that I identified properly my phone according to guide

    Base sw ver ELS-LGRP4-OVS 11.0.0.223
    Preload sw ver ELS-N29-PRELOAD 11.0.0.3(C432R5)
    Cust software (C432)
    My version info , The config I needed . Your phone model and build is identical to me. Preload (R4/R5/R6) does not matter, as it only differs in preinstalled apps. You can use the packs from huaweifirmware that I have in the pictures.
    Tried to downgrade to
    Emui 10 .131 - fails without downloading
    Go with 10.1.0.121 , select the combination I have above, and most of all: use 10.0.1.550 for it.

    Is Hisuite 10.0.1.100_OVE version enough to process Emui 11 firmwares?
    No. You need 10.0.1.550 for downgrades.
    UPDATE3 So Hisuite 10.0.1.100_OVE cant downgrade to Emui 10 from 11 according to this post by author of Hisuite Proxy. By using latest version of Proxy from author website and by selecting fw 11.0.0.151 I got it working and downgrading from .223 to .151 - now I hope it will be possible to go down to Emui 10 by official Hisuite.
    You can do it but you won't have USB.
    Slowly progressing back to beginning :)

    UPDATE4 sooo after successfully flashing with recommended HiSuite 10.1.0.550 and latest Proxy to fw 11.0.0.151 I ended up in eRecovery mode automatically downloading 11.0.0.202 through wifi.
    You messed it up. YOu should have gone directly to EMUI 10 using proxy. 11.0.0.151 is not suitable for downgrades, it is not a rollbackable firmware. Now your only option is for eRecovery to fix it for you as you wouldn't have USB anyway. So you go to the latest version of EMUI 11 and THEN directly go down to EMUI 10, 10.1.0.121.
    Hope it will work else I have softbricked phone...
    You will if you keep jumping corners. Don't try to experiment, this is dangerous enough already.


    Once again, if you have Google apps installed already, then it is absolutely UNNECCESSARY TO DOWNGRADE YOUR SYSTEM SOFTWARE. You can fix play protect errors very easily by just replacing an app on your phone. Why you guys would want to go through the whole downgrade process all over again is something I don't get. But, whatever you prefer :)
    2
    You're welcome! Enjoy the experience and remember: keep it calm!
    YOu can fix almost ALL issues that can arise with GMS without ever downgrading again. This is because the only thing you really need the downgrade for is to enable elevated privileges for the google apps (this is what that weird lzplay app does) and you only need to do that once.
    The only thing you shouldn't do is a factory data reset as it would obviously wipe away these permissions too, in which case you would have to do a downgrade, but not in any other case.

    Play protect certificates keep getting invalidated from time to time, because Google is stepping up their mechanism. But see, the scene already has fixes for it. And in this case you just need to replace an app.

    Of course now, that you're doing a full downgrade+upgrade, and doing all the Googlefier stuff again, make double sure that you launched LZPLAY app as soon as it was installed as you can only do that on old versions of EMUI10. Once lzplay is loaded and given the special permissions it asks for, and googlefier having completed all of its steps, you're good to update

    But don't ever update Google Play Services as that seems to be what is breaking the Google Play certificates, causing the error messages. If you did update it anyway, you can use 7-GSM Play Protect certified Fix.apk from this pack link to fix it.
    First uninstall Google Play Services then install this replacement app.
    1
    Just to confirm success, I have P40 Pro updated to latest firmware 11.0.0.223 and working GMS. For half of the day now, installing everything I want.

    First i did FW downgrade to 10.1.0.131 and applying lzplay manually (you can use Goglefier, same result) using this great guide

    Then used OTA updates to get phone to latest available FW which was I think 11.0.0.198. Then used official HiSuite to apply three more updates to end with 11.0.0.223

    Then I followed this latest guide to fix GMS. I did one additional trick - disabling internet during whole process. What I learned during first try is that when you apply fixes (mainly downgrading GMS), phone sometimes manages to uprate these back. Because Play Store is by default set to update automatically. And it messes whole proces leaving you with idea that it doesnt work. It works fine, you just need to have correct versions of GMS modules.
    After finishing with video guide, I enabled internet for brief moment to load Play store. As soon as it is loaded just disable internet again. Go to settings of Play Store and in Settings > Network Preferences set Auto-update apps to Dont auto-update apps. Which hopefully stops GMS updates in background. And keeps them running till Google finds out and makes updates enforced in next version regardless of auto-update settings...

    UPDATE after week of using phone: GMS hacked in phone worked, but notifications coming through Google push services did not. I tried few available solutions but none of these did the job. At the end I used Ilham solution provided by Badmania98 in his thread. And it is working for over week now without any glitches. Notifications coming through. There are some minor issues like Gmain dark mode not working, but nothing gamebreaking. Cheers to Badmania98 for his help!
    1
    You just need to fix your Play certificate to stop those annoying play protect messages.
    Yes, they added additional verifications. Yes, that was probably targeted against this hack, among others.

    What you need is simply to download this pack:

    And then uninstall Google Play Services
    then install this one: 7-GSM Play Protect certified Fix.apk
    Then reboot
    And the spam notifications should be gone.
    Replacing Google Play Services with this app will force-regenerate your Play certificate,
    and this version of Google Play Services does not have the problematic check in question.
    Still you should NOT update Google Play Services as the latest version DOES have the check that will trigger this event again.

    You do NOT NEED to install anything else from this pack.
    Actually you could reupload this with only this file present.

    Yes, it is missing that option. It is not supported anymore, and if you force it, you WILL HAVE PROBLEMS.

    If you REALLY want to downgrade you can use HiSuiteProxy and an older version of HiSuite. However I don't recommend this for 3 reasons:
    - it is unneccessary
    - it is dangerous. You WILL lose USB connectivity after the upgrade, and you can only regain it when you update again to the latest system software version. And you can only do it with OTA.
    - You can very easily brick your phone if you use HiSuiteProxy as it bypasses many of the firmware validation checks
    +1 Huawei is changing things around with the latest HiSuite. Older versions will not work for software updates/downgrades for much longer.

    I got this error device not Play Store Licensed/Approved...

    This fixed my issue on p40 pro, els-n29 c432r5, emui 11.0.150

    Thank you!