If you currently have an Amazon Fire Phone, you will get the update notification to Fire OS 4.6.1 which now based on Android 4.4 KitKat. The update file size is quite large, which is around 1.2GB, it is quite reasonable considering it contains a major OS upgrade to KitKat. Besides loaded with updated OS, this new software also brings significant enhancements and new features. For the geek users, it seems you do not need to worry about losing the ability to get the most out of this phone, because we can still get root on Amazon Fire Phone running Fire OS 4.6.1 (official KitKat).
Amazon seems serious to release an update for this smartphone, it can be seen from the new and enhanced features added to version 4.6.1 which will motivate you to immediately update the phone. Several enhancements that will you get like Low-energy Bluetooth, change the wallpaper on the home screen, better notification, improved keyboard options, stock enhanced camera features, smarter calling options, improved stock messaging app, numerous bug fixes and many more.
Regarding superuser access, we did not need to worry because now we can regain root on Fire Phone running Fire OS 4.6.1 KitKat by using an app called Kingroot. Revealed by an XDA member – FotixChiang, those made in China one-click root app not only work with Amazon Fire Phone, but also with other Amazon devices like the 4th Generation Amazon Kindle Fire HDX 8.9 Tablet.