Icom IC-905
firmware v1.12
Icom · Released Nov 30, 2023 · First seen Sep 7, 2026
Source:
icomjapan.com
v1.12 is not the latest firmware for the Icom IC-905: the current version is v1.20 (October 2, 2025). Go to v1.20
In short — summary by updatemystuff.com
Improved RF unit detection dialog when CX-10G is connected during startup.
- Improved 'RF unit is not detected' error dialog
Written from Icom's release notes, which are printed in full below.
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What's in this update
Changes from Version 1.11
-Improved the " The RF unit is not detected." dialog, which sometimes appears when the transceiver is turned ON with the CX-10G connected.
-Other minor changes
- If the firmware is updated after the "The RF unit is not detected." dialog is displayed at startup, the firmware of the RF unit is not updated. After restarting, the " RF CPU firmware is wrong version. Retry updating the firmware." dialog will appear.
In that case, update the firmware from the state that the RF unit is correctly recognized (the state the "The RF unit is not detected." dialog is not displayed).
If the "The RF unit is not detected" dialog is repeatedly displayed after restarting, disconnect the CX-10G and update the firmware.
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