Icom IC-7700
firmware v1.21
Icom · Released Mar 3, 2011 · First seen Sep 7, 2026
Source:
icomjapan.com
v1.21 is not the latest firmware for the Icom IC-7700: the current version is v2.20 (July 20, 2018). Go to v2.20
In short — summary by updatemystuff.com
Improves DSP unit software performance.
- DSP unit software performance improvements
Written from Icom's release notes, which are printed in full below.
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What's in this update
Major points of the Ver. 1.21 update.
Improvements software performance for the DSP UNIT.
Please save the transceiver's data contents to an USB memory before starting the firmware update.
Never turn the transceiver power OFF while updating the firmware.
Please read through Section 16 (UPDATING THE FIRMWARE) in the IC-7700 instruction manual, before downloading the new firmware.
Please also download Firmware update utility; 7700FirmUtl_v100.zip (225KB) when updating the firmware using a LAN.
updatemystuff.com never hosts firmware files — always download from the official source.
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Create account & watchChanged since v1.20
- Improvements software performance for the DSP UNIT.