KDC BT730DAB/BT505DAB/M505DAB CD/USB Receiver Firmware Upgrade Guide

About this manual

This document details the procedure for upgrading the firmware on specific KDC CD/USB receiver models. It covers the applicable models and firmware versions, the steps to create the upgrade media using a computer, and the specific button sequences required to initiate the update on the device. This manual is written in Chinese.

What's inside

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

Frequently asked questions

What are the applicable models for this firmware upgrade?

The upgrade program is applicable to the KDC-BT730DAB, KMM-BT505DAB, and KMR-M505DAB models.

How long does the firmware upgrade take?

The upgrade process takes approximately 10 minutes to complete.

What should I do if the upgrade shows 'NO FILE'?

Check if the upgrade program is located in the top level of the USB storage and verify the file name matches the model.