If you have successfully extracted the firmware, the general update process is as follows:
You cannot use "part02.rar" alone. You must download all associated parts (typically Part 01 through the final part) and keep them in the same folder. Descargar MT5522 PC821 3840x2160 USB part02 rar
Do not turn off the TV until the process finishes. The TV will typically reboot automatically once the update is complete. Where to Find Files If you have successfully extracted the firmware, the