Default [Q] MaximusHD Rom Problem!

Hello when i want to desense the v30 i finish the first setup and after that i get that messege with a black home screen

i tryed to insalling the launcher over adb install but it gives me an error with Failure [INSTALL_FAILED_OLDER_SDK] same when i try to install nova launcher prime v2.2.3 .

can somebody help me with that ?