[ALE-L21] Software install failed when I want to install EMUI 3.1 as dload

Hello everyone!
I am newbie there so If I did something wrong then I am sorry.
I have a big problem so I so need your help (in sos?).
I am trying install back EMUI 3.1 cause 3.1 was faster and power saver than 4.0.3 so I would to install back 3.1.
I found a zip file which is contain update.app. It has been downloaded from huawei's site (c1.huawei.com). So maybe it is an offical package

I am trying install EMUI 3.1 since yesterday.. But I always got an error (Software install failed). If I install an rollback android 6 to 5 then my recovery is dies. I did everything I saw on xda and other forums.. My phone is unrooted, bootloader is unlocked everything.. I so need EMUI 3.1. Please a helpful person.

Thanks,
Balázs.

Show Accepted Answer

Guest Quick Reply (No URL, BBcode or HTML)

Last post by orie79
2 hours ago
Last post by cierra11
3 hours ago
Last post by agutkowski
3 hours ago
Last post by cokeefe
25 minutes ago
Last post by jherzog
1 hour ago
Last post by pcorkery
2 hours ago
Last post by stracke.amy
4 hours ago
Last post by jeanie41
2 hours ago
Last post by ohilpert
3 hours ago