1. Go to phone settings -> security -> enable check for Unknown sources
2. Download file(s)
[2a. If "[Data]" is needed: Extract all files from [Data].rar to /sdcard/Android/data/]
[2b. If "[OBB]" is needed: Extract all files from [OBB].rar to /sdcard/Android/obb/]
3. Use your favourite file manager to install the APK