Android:Install update for published app

So i have published and singde app, with version set in Unity 1.0. Now I have app installed from playmarket. And I try to install new version of app (v 1.1 also singed the same key from same keysotre) from device to test updates installation but after msg:
“Install an app for this app? On the current data does not affect. No special access rights are required.”
and some load I get error:
“App not installed”.
Please! Any help?

So I found out that it is keyes conflicts error:
“Failure [INSTALL_FAILED_UPDATE_INCOMPATIBLE: Package calligra.rus.app signatures do not match previously installed version; ignoring!]”

But i am using the same keystore and same key to sing my test app. The difference is that when i published my previous app version, the keystore was in other directory. Maybe this could be the reason