You can download PhoenixCard Tool v3.1.0 from reputable developer resources and hardware support sites:

Includes a "Restore" function to format the SD card back to its normal state after it has been used as a production or startup card. Where to Download PhoenixCard v3.1.0

Creates a bootable MicroSD card that allows the device to run the operating system directly from the card without affecting the internal memory.

Allwinner PhoenixCard Tool v3.1.0 is a specialized Windows utility used to flash firmware images onto MicroSD cards specifically for devices powered by Allwinner processors. Unlike standard flashing tools, PhoenixCard prepares the SD card in a way that allows Allwinner tablets and TV boxes to boot from the card or automatically install firmware to their internal storage. Key Features of PhoenixCard v3.1.0

Automatically formats the target SD card before beginning the burning process.