All sunxi devices use LiveSuit as a default flasher and updater for retail customer and PhoenixCard or PhoenixUSB for flashing when devices are manufactured. LiveSuit/Phoenix protocol and data are closed-source standrad used by many companies and devices.
Please note that PhoenixSuit is actually LiveSuit2.0. There are different platform's PhoenixSuit
Please refer to the Livesuit/PhoenixSuit Installation Guide
Assuming you are going to use ct-nand-v1.01-20140109.img
$wget http://dl.cubieboard.org/software/a20-cubietruck/android/ct-nand-v1.01-20140109.img.gz $gunzip ct-nand-v1.01-20140109.img.gz
(We just have only one image for cubietruck,later we will have more image)