Firmware Download

Download the old version

Download Type Firmware
Model name IC-705
Version Version 1.20
Update 2021/01/22
Major changes

Changes from Version 1.12


[Spectrum scope is improved]

-A Scroll mode that can seamlessly change the displaying scope range, depending on the operating frequency, is added.

- A popup screen that displays when SPAN or EDGE change is added.

- The number of FIX EDGE memories is expanded to 4.


[Preset function is added for FT8 operation]

-A Preset function that can set each operation is added.

 NOTE: The default settings for the Preset function are for FT8 operation. If your digital software does not support the IC-705, change to an Icom transceiver’s CI-V address that the software supports.

For example, when selecting the IC-9700 in the software, set the CI-V address in the IC-705 to A2, which is the IC-9700’s CI-V address.


[The AH-705 automatic antenna tuner can be used]

-An antenna tuner selecting item is added in the Set mode.

- A Tune Memory setting and a Tune Memory Clear functions are added.

-When [TUNER] on the FUNCTION screen is touched, tuning starts.


[Other changes]

-A WLAN Access Point mode is added.


-A Front Key Customization function that can change the function of [VOX/BK-IN] and [AUTOTUNE/RX>CS] is added.


-[TUNER] is added to the Remote MIC key function.

- You can set 2 voice memories (T1 and T2) and 2 keyer memories (M1 and M2) in IC-705 firmware Version 1.12.

In firmware Version 1.2, the number of Voice memories, Keyer memories, and RTTY memories is increased to 4 in each mode.

Each bank of memories is automatically selected, according to the operating mode. For example, when operating in the SSB mode, the Voice memory bank is automatically selected.


- The "ddd.dddd˚" format is added for the Latitude/Longitude display.

- While operating in the Data mode, the receive tone control is deactivated.

-A menu item that can return to the normal mode is added to the QUICK MENU of Terminal Mode and Access Point Mode.

- Improves the saving of the Battery Pack Confirmation setting.

NOTE: When the firmware is updated, the battery pack selection returns to the default setting (OFF).


Refer to INFORMATION IC-705 Version 1.20 for details.


The compatible programming software for firmware update Version 1.20 can be downloaded here.

The Scroll mode for the RS-BA1 Version 2 software will be added to Version 2.30.


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: 1.20

Sub CPU: 1.01

DSP Program: 1.10

DSP Data: 1.00

FPGA: 1.01

DV DSP: 1.02

GPS: 13196

Bluetooth: 1.12


File Size 8.16MB
File Type zip
Manual manual download page

Firmware Update Information

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.