EMUI 12.0.0.218 unable to downgrade to any version.

[phittetryne]

EMUI 12.0.0.218 unable to downgrade to any version.
My understanding is that I have to downgrade to a version earlier than 11.0.0.260 by OTG/NM
Huawei p40 pro ELS-N29 c432r4

I've tried the OTG methods step by step but with no results. Ive tried 3 different firmloads(even the one specifically mentioned in the post ive linked) but the same message meets me every time when I try to install the software/firmware on the device. “Software install failed” And I can only press restart. Ive used this method https://forum.xda-developers.com/t/...cussion-support.4346741/page-13#post-86122137
and this one
https://forum.xda-developers.com/t/...cussion-support.4346741/page-14#post-86146187

I've used Hisuite about a year ago and I've tried it this time as well. Hisuite gives me no indication thats something is wrong, and the first and only error occurs on the phone when installing new firmware “Software install failed. restart” the phone says, and im back to square 1. I've tried both firmware 10.x.x.x and also 11.0.0.230. + several tries with random firmware versions.

All the steps are being followed with success - but when it's trying to install on the device it's not working. I've read a bunch of posts and used several days on the matter with no success.

Any help is much appreciated.

 

[badmania98]

You misunderstood the guide.

 

[badmania98]

Read no. 0 here.

 

[phittetryne]

Thank you for the response. I am unable to find 11.0.0.260 via https://professorjtj.github.io nor firmfinder.

Ill search around and see what I can find.

 

[badmania98]

See again the link. I just updated with images.

 

[EclipseX]

did you got the downgrade?

 

[phittetryne]

Sry for the late reply. Yes it did work indeed. Im now at 10.0.21 and Im on the right path. Badmania98 was, as always, right. It can be confusing sometimes to follow these guides on a second/third language. I, as many other, are very grateful.

Note: I did have to try to downgrade to 260 about 30-50 times or so since the original hisuite kept showing "no internet connection" - even after disabling all of firewalls etc. It did time to time load 5% or so. and next time another 5% to 10% and so forth. This process took several hours, but downgrade to 10.0.21 was smooth - I am now at 10.0.21 and rdy to install googlefier

Ill keep u posted if I meet any more difficulties. Thanks again

 

[badmania98]

Is no 10.0.21 firmware on P40 Pro. You want to say 10.1.0.121?

 

[GingerUa]

Oh my good, u snpand like a 2 days to try to downgrade until now, before i think im stupid but now i saw not alone with the same problem
Try to do same like you by few % all the time thanks

 

[GingerUa]

Guys Help me please ... I got new issues..
I downgrade my Emui 12 to Emui 11.0.0.260 by original HiSuite and than I try to downgrade to 10.0.0.131 by HiSuite v...... 550_evo and firm finder and HiSuite proxy all is working but after when my phone installed update its fall down and restart my phone.
P. S.
Huawei p40 pro
Morel ELS-NX9
Build number 11.0.0.260

All info I put by screenshot
Thanks you in advance

 

[phittetryne]

Is no 10.0.21 firmware on P40 Pro. You want to say 10.1.0.121?

Yes ofc. And I got it all working fine now - by the help of ur posts/replies in other post on the forum. Thanks a bunch!

 

[phittetryne]

My phone is now working perfectly without any issues.
Ive come across alot of common issues but all the answers were found in the forums.

GingerUa: Follow what Badmania98 wrote here https://forum.xda-developers.com/t/...cussion-support.4346741/page-14#post-86146187

Use this method https://forum.xda-developers.com/t/...cussion-support.4346741/page-13#post-86122137 to downgrade another version before u can use hisuite proxy.
I used this firmware https://androidhost.ru/Z6c?pt=VFVGS...2VUdaVlp6MDlPcWpKQjdRMkhEbnBxTTlrWi9Rc3RzVT0= But its all in the first link(bottom of the post)


So downgrade via original hisuite first.,Then via OTG, then via hisuite proxy.
Then u can innstall googlefier.

 

[genozide1998]

Sry for the late reply. Yes it did work indeed. Im now at 10.0.21 and Im on the right path. Badmania98 was, as always, right. It can be confusing sometimes to follow these guides on a second/third language. I, as many other, are very grateful.

Note: I did have to try to downgrade to 260 about 30-50 times or so since the original hisuite kept showing "no internet connection" - even after disabling all of firewalls etc. It did time to time load 5% or so. and next time another 5% to 10% and so forth. This process took several hours, but downgrade to 10.0.21 was smooth - I am now at 10.0.21 and rdy to install googlefier

Ill keep u posted if I meet any more difficulties. Thanks again

u just keep on click rollback even its showing no internet connection??

 

[badmania98]

u just keep on click rollback even its showing no internet connection??

There is something wrong.

 

[phittetryne]

u just keep on click rollback even its showing no internet connection??

It said no internet connection first and never loaded - then I disabled the firewall and different things i come across on the forums, and it loaded 20% or so. I tried again and it said no internet connection 9/10 times. When it worked, it loaded 10% or so and I have to give it another 10 tries to get another 10%.

 

[GingerUa]

I do a very bad and big mistake...
Before with big luck I downgrade from 12.0.0. 218 by last v. Hisuite...
And than waiting for my otg...
But I didn't turn off auto update and in few day in the night phone avtomaticli updates back to 12.0.0.218...
And now all ready like a 3 days I try downgrade again but still not luck.
Today I try to do it by hisuite 11.0.510_evo download of emui 11.0.0.260 was take like a 3 hours very slow but with out any problems and than when update was installed I got error in installing....

What to do now idk...
Maybe this is because I use WI fi or not originally cable?
All ready write to Huawei support they said we pass this request to technology department they will answer in 3 days
I really mad off this they have to fix this sh..t I said him I don't like this emui 12...
If I will not fix it by my self When I come back to my home country I will bring my phone to Huawei office and if they can't fix it I will broke some one face off this people...

Thanks for every one here.
If somebody find solutions for this sh..t pls write here I check this page every couple hours.

 

[GingerUa]

.

 

[badmania98]

I do a very bad and big mistake...
Before with big luck I downgrade from 12.0.0. 218 by last v. Hisuite...
And than waiting for my otg...
But I didn't turn off auto update and in few day in the night phone avtomaticli updates back to 12.0.0.218...
And now all ready like a 3 days I try downgrade again but still not luck.
Today I try to do it by hisuite 11.0.510_evo download of emui 11.0.0.260 was take like a 3 hours very slow but with out any problems and than when update was installed I got error in installing....

What to do now idk...
Maybe this is because I use WI fi or not originally cable?
All ready write to Huawei support they said we pass this request to technology department they will answer in 3 days
I really mad off this they have to fix this sh..t I said him I don't like this emui 12...
If I will not fix it by my self When I come back to my home country I will bring my phone to Huawei office and if they can't fix it I will broke some one face off this people...

Thanks for every one here.
If somebody find solutions for this sh..t pls write here I check this page every couple hours.

First downgrade with last original HiSuite (11.0.0.590) from EMUI12. Is not working with HiSuite Proxy.

You can take a look here for a suggestion. I haven't tried it.

 

[GingerUa]

First downgrade with last original HiSuite (11.0.0.590) from EMUI12. Is not working with HiSuite Proxy.

You can take a look here for a suggestion. I haven't tried it.

I don't use hisuite proxy for downgrade from 12.0.0.218 to 11.0.0.260 just original hisuite last version and now when I try to downgrade again always I get error no internet connection...
I try to do it every day like a 7 or 8 hours and every day a same sh..t...
But like a few days ago it's was working

 

[badmania98]

I don't use hisuite proxy for downgrade from 12.0.0.218 to 11.0.0.260 just original hisuite last version and now when I try to downgrade again always I get error no internet connection...
I try to do it every day like a 7 or 8 hours and every day a same sh..t...
But like a few days ago it's was working

Verify in HiSuite settings to not have a proxy.