APK files

Hello guys,

The box does not have Google Play Store on it by default. I didn't notice it and the automatic firmware update was activated. Now I have the latest version on it. Because of this, I cannot install the G firmware. I have tried to install the recovery image but unfortunately it does not work. I followed the instructions exactly, but I don't know why it doesn't work.

Now I want to install the apps via apk but most of them don't work. What do I have to look out for in the files....

APK files