Finding the right firmware for RK322x TV boxes can be a bit of a minefield because these "MXQ Pro 4K" clones often use different internal components (WiFi chips, RAM) despite having the same plastic shell.
Never flash a new firmware without first using a tool to . If the 8.1 update fails or the remote doesn't work, you'll need that backup to bring the box back to life. If you’d like to find the exact file you need, tell me: The exact model name on the box (e.g., MXQ Pro, V88). rk322x-box firmware 8.1 download