83 Service Navigation3.1. Service InformationThis service manual contains technical information, which allow service personnel's to understand and service this model.Please place orders using the parts list and not the drawing reference numbers.If the circuit is changed or modified, the information will be followed by service manual to be controlled with original service manual.Note:The replacement parts of this model is supplied as block unit.Please use Troubleshooting Guide for your reference of the repair.3.2. How to Update FirmwareThe firmware of the unit may be renewed to improve the quality including operational performance and playability.Make sure to refer the following procedure when performing version-up.3.2.1. Confirmation of the Firmware VersionPerform following steps to checking the firmware version currently installed in the unit.1. Turn the unit on and wait the Home screen is displayed.2. Select [Setup] → [Player Settings] → [System] → [System Information] → [Firmware Version Information].3. Firmware Version Information screen is displayed.3.2.2. Updating FirmwareThis unit has 2 updating method, one way to update via the internet, the other way to update using CD-R or USB device which isstored pre-downloaded firmware update file.3.2.2.1. Updating firmware via the internet