Here is the content regarding PhoenixCard v4.1.2 and how it works, based on common usage for Allwinner (全志) SoC devices (e.g., Orange Pi, Banana Pi, Cubieboard).
Do not download from random forums without checking hashes.
Official sources (archive): phoenixcard v412 work
PhoenixCard_V4.1.2_20170901.7z9a3b2c1d8e7f6a5b4c3d2e1f0a9b8c7d – verify after download.Better practice: Use v4.1.2 from a known developer’s GitHub or the Armbian forum repository (they often mirror trusted Allwinner tools). Here is the content regarding PhoenixCard v4
PhoenixCard v4.12 is a Windows-based utility used to create bootable SD cards and eMMC images for Allwinner-based single-board computers (SBCs) and tablets. It writes a device image (usually a firmware or system image in .img or .img.gz format) plus a partition table and boot configuration so the target device can boot from the card or internal eMMC. PhoenixCard v4