Firmware Update On Xiaomi Mi Tv 4a Pro 43 Portable

Hard reset: Unplug TV for 5 minutes. Plug back. Press and hold (physical buttons) for 20 seconds. If still black, contact Xiaomi service – you may need a UART JTAG recovery.

Go to Settings > Storage > Internal shared storage > Cached data > Clear. Factory Reset: firmware update on xiaomi mi tv 4a pro 43 portable