You cannot simply copy the firmware file to the card; it must be flashed.
Search with your exact board + Wi-Fi chip, e.g.: "MXQ Pro 4K V3.1 SV6051P firmware 71.2" mxq pro 4k firmware 71 2 download sd card free
The MXQ Pro 4K is an Android TV box powered by an Amlogic S905 or S905X chipset. Firmware version 71.2 (often referred to as “71.2” in build numbers) is a system image that includes Android 7.1.2 (Nougat). It is widely used because it fixes several bugs from earlier versions, improves Wi-Fi stability for certain chips (like SV6051P, 8189ETV, or RTL8189), and enhances 4K video playback. You cannot simply copy the firmware file to
That said, here’s how you can the correct firmware for free: mxq pro 4k firmware 71 2 download sd card free