PhoenixCard 3.1.0 is a specialized Windows utility developed by to convert official firmware images (.img) into bootable, self-installing SD cards. This tool is essential for users of Allwinner-based devices—such as Android tablets, TV boxes, and development boards like the Pine64 —to perform system upgrades, repairs, or complete re-imaging. PhoenixCard 3.1.0 Key Features PhoenixCard - linux-sunxi.org