Download an upgrade file from local distributor in your country or visit at www.airlinktek.com. Copy the Upgrade file to the Built-in HDD in your MG-250HD.
After connecting to a TV set, browse to the upgrade file and press [OK]. The Upgrade procedure is then automatic.
After the upgrade procedure has finished you can check the firmware version in the Setup screen. Press [SETUP] button.
* The Current firmware version is displayed when pressing [INFO] button on main file browser screen.