Problem with g300

[Guest misewic]

I have a problem when I want to update the program (which I've updated a million times by now) simply will not .. It says something key verification saving blah blah .. as it can not capture key ...

Try the vol + - and there is a problem .. screen is purple so I do not know why it solves???

But i can run recovery,root,bootloader etc.. and i can upgrade rom from .zip files but .app not :( and annoying me.