Firmware Download

Download the old version

Download Type Firmware
Model name IC-705
Version Version 1.24
Update 2021/03/05
Major changes

Changes from Version 1.20

  • - Improved the Scope function of the RS-BA1.
  • - Supports a 64-digit hexadecimal format WPA/WPA2 Password.

The compatible programming software for this firmware can be downloaded here.

The software update for the compatible RS-BA1 can be downloaded here.


To update the firmware

  • ・Thoroughly read 17. UPDATING THE FIRMWARE of the ADVANCED MANUAL and follow the instructions displayed on the IC-705 LCD screen.
  • This update initializes the transceiver's settings when updating from a firmware earlier than version 1.20. Save your current settings before the update, and then write them back to keep the previous setting on the updated firmware.
  • ・The firmware will be updated to the following versions.
    • Main CPU: 1.24
    • Sub CPU: 1.01
    • DSP Program: 1.10
    • DSP Data: 1.00
    • FPGA: 1.01
    • DV DSP: 1.02
    • GPS: 13196
    • Bluetooth: 1.12
    • WLAN:
File Size 8.17MB
File Type zip
Manual manual download page

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.