Step 1: Enable Unknown SourcesBefore installing any APK from outside the Play Store, you must allow your device to install third-party apps. Go to Settings > Security > and toggle on "Unknown Sources."
: Alternatively, use an APK editing tool to look inside the app's AndroidManifest.xml and raise the targetSdkVersion manually, though results vary heavily based on the underlying hardware architecture. youtube for android 41 2 uptodown upd