Finding the right firmware for the MXQ Pro 4K 5G board (often associated with the Allwinner H3 chipset) is a common challenge because these devices frequently use "fake" specs that don't match the internal hardware. LibreELEC Forum
These are , not hardware failures (usually). firmware tv box mxq pro 4k 5g placa h3q44v30 better
Physically inspect your device's PCB (Printed Circuit Board) to be certain. Finding the right firmware for the MXQ Pro