How to remove failed to verify whole-file signature.

[Raivis]

Hello!
How to remove failed to verify whole-file signature ?

 

[Dannydet]

What is it that you're asking?
Is an app giving you this information?

 

[Raivis]

No, its not an app, its when I want to install new android from zip file. But I found something else what could cause this issue - its called FAP or FRA that stupid protection to change android versions from older to newer. I want upgrade from Android Lolipop to Marshmallow. I even did root my device in this case Samsung phone but still this whole file signature issue even if I root my device. So now Im looking how to remove all factory protections to install anything any Android version what I want.