Firmware Download

Download the old version

Download Type Firmware
Model name IC-R8600
Version Version 1.35 for non-USA version
Update Jan.29.2021
Major changes

This firmware is for non-USA versions that have a serial number beginning with other than "02".

Changes from Version 1.34.

Fixed an issue where the Speech function audio may be distorted.


To update the firmware

  • Thoroughly read Section 7. USING AN SD CARD and Section 13. UPDATING THE FIRMWARE of the INSTRUCTION MANUAL, then follow the instructions displayed on the IC-R8600 LCD screen.
  • Before updating the firmware, save the setting data.

  • The firmware will be updated to the following versions.
  • Main CPU: 1.35
  • Front CPU: 1.01
  • DSP Program: 1.06
  • DSP Data: 1.01
  • FPGA: 1.10
  • DV DSP: 1.01
File Size 5.82MB
File Type zip

Regarding this Download Service.

When using this download service, the implementation, use and/or results of use are the sole responsibility of you using this download service and the equipment. You shall comply with applicable laws and regulatory requirements in the use of this download service and in the operation of the equipment.

Firmware is important data for the basic system control of your equipment. An interruption during downloading or a malfunction may cause a failure in the data re-writing, and your equipment may stop functioning normally. If such a failure of the firmware re-writing results in your equipment not functioning normally, Icom Inc. and its affiliates expressly denies and is free from any and all responsibility arising from the result of damage from such an event.

You agree not to hold Icom Inc. and its affiliates responsible for any damage to your equipment operation or loss of data, or unauthorized use of the equipment, whether intentional or not, as a result of use this download service.