This is an important step because it allows you to install apps that aren't downloaded from the Google Play Store, which is where most people get their apps. The Ateen. pattiPK file can be downloaded by players from a reliable website after this setting is changed. To minimize any potential security risks, it is imperative to confirm the reliability of the source. Users can find the file in the file manager on their device after downloading it, then tap on it to start the installation process.