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 cb_a20_android42_v1.04_8188eu-en_US