You can upgrade your android using the settings menu. But it depends on some models because some require you too upgrade it through a computer. Or If you have a custom ROM or custom firmware to update that you would have to use a recovery. Hope this helped:)
You can upgrade your Lenovo S660 to Android KitKat using the Android 4.4.3 KitKat update for Moto E.
Your Lenovo S660 can be upgraded to Android KitKat using the Android 4.4.3 KitKat update for Moto E.
Yes, the Kitkat Android version is a good operating system.
Android Kitkat version 4.4 deemed to be the best, try it.
If you have already rooted your Lenovo S660, you can upgrade it to Kitkat using the link: http://gadgetsacademy.com/update-galaxy-s5-android-kitkat-4-4-2-xxu1ane2-firmware/ .
If they are no wallpapers after upgrading to 4.4.2 Kitkat this means they might have been wiped out. You can find free wallpapers on zedge.net/wallpapers/6987/xolo-q1010-wallpapers
To upgrade your Lenovo S660 to Kitkat, you have to root it first using the Framaroot-Guide.
The Motorola Nexus 6 ships with Android Lollipop but is upgrade able to Marshmallow. It has not been officially announced whether it will receive Android N.
Android in general can be referred to the company under Google that develops the operating system and devices. Android KitKat is the codename for one of many versions of Android's operating system, version 4.4 in this case.
It is the common name for version 4.4 of the Android operating system, used on some mobile phones.
You can upgrade your LGAS740 to android 2.2 by upgrading its operating system.
As of August 2014, the fastest version of Android OS is version 4.4.4 (KitKat). The next Android version (Android "L") is set to debut in the fall.