Icom ID-4100A firmware v1.04

Icom · Released Dec 13, 2019 · First seen Sep 7, 2026

Source: icomjapan.com

v1.04 is not the latest firmware for the Icom ID-4100A: the current version is v1.05 (January 31, 2020). Go to v1.05

In short — summary by updatemystuff.com

Fixes call-ending frame transmission, resolving standby beep delays and repeater downlink issues

  • Position data transmission in DV mode fixed
  • Standby beep delay from receiving transceiver resolved
  • Repeater downlink stops after uplink

Written from Icom's release notes, which are printed in full below.

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What's in this update

Changes from Version 1.03

Fixed the problem where the call-ending frame ​may not be sent when transmitting the D-PRS DV-A or NMEA DV-G position data in the DV mode using Version 1.02 or Version 1.03 firmware.

Version 1.04 fixes the following problems.

The call-ending frame was not sent after releasing PTT. This caused a delay in sounding the standby beep from the receiving transceiver.

The repeater does not stop transmitting the downlink soon after the transceiver finishes transmitting the uplink.

To update the firmware

Thoroughly read 13. UPDATING THE FIRMWARE of the

ADVANCED MANUAL

and follow the instruc​tions in it.

Making a backup file of programmed contents and settings before updating the firmware is recommended.

The firmware will be updated to the following versions.

CPU M: 1.04

S: 1.00

C: 1.01

DSP: 1.02

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Changed since v1.03

  • Changes from Version 1.03
  • Fixed the problem where the call-ending frame may not be sent when transmitting the D-PRS DV-A or NMEA DV-G position data in the DV mode using Version 1.02 or Version 1.03 firmware.
  • Version 1.04 fixes the following problems.
  • The call-ending frame was not sent after releasing PTT.
  • This caused a delay in sounding the standby beep from the receiving transceiver.
  • The repeater does not stop transmitting the downlink soon after the transceiver finishes transmitting the uplink.

Other versions for this product

See the full firmware history for the ID-4100A