PhoenixCard v4.1.2 is essentially a legacy utility designed specifically for burning firmware to SD cards for Allwinner-based ARM devices (like many Android TV boxes, single-board computers such as the Orange Pi, and older tablets). If you own one of those specific devices, it’s almost mandatory. If you’re looking for a general-purpose SD card imager, look elsewhere.
Download the PhoenixCard v4.1.2 archive and the specific .img firmware for your device. Sites like ZeusBTC or Radxa Docs provide downloads for various use cases. 2. Burning the Image 4.2 Updating the firmware using the SD-card - BiXBiT