Sony CD/USB Receiver Firmware Update Guide

About this manual

This document serves as a firmware update guide for specific models of Sony CD/USB receivers. It details which firmware versions are compatible with each receiver model and provides the necessary file names and sizes for the upgrade process.

The guide outlines the step-by-step procedure to download, copy, and install the new firmware via a USB storage device. It also explains how to check the current firmware version on the unit before starting the update. This manual is written in Chinese.

What's inside

• Applicable Models
• Firmware Versions
• Precautions
• Creating Upgrade Media
• Checking Firmware Version
• Update Steps

Frequently asked questions

What is the file name for the KD-R490 firmware update?

The upgrade program filename is V111J18S400.rom.

How long does the firmware update take?

The upgrade process takes approximately 3 minutes to complete.

What should I do if the display shows 'WAIT' for more than 5 minutes?

The firmware upgrade may fail; you should remove and reinsert the USB storage or check for security features on the drive.