Here I have victory, and today I'm going to show you how to allow installation from the unknown sources for apps from on this device. So, first, you have to open settings next, you have to enter security section here and here you can find this unknown sources line, and here you can read this feature allows installation from apps from unknown sources. You just enable it here, and now you can just install apps from any source, and that's it, thanks for watching. If you find this tutorial useful, don't forget to hit that like button and subscribe to our channel.
Source : HardReset.Info