microHAM MK2R firmware v5.3

microHAM · Released Dec 22, 2009 · First seen Sep 9, 2026

Source: microham.com

v5.3 is not the latest firmware for the microHAM MK2R: the current version is v7.19 (October 8, 2020). Go to v7.19

In short — summary by updatemystuff.com

Adds support for Icom IC-7600 and IC-475 radios and SteppIR SDA 100 Controller; fixes audio lock and TX stereo reporting.

  • Icom IC-7600 and IC-475 radio support
  • SteppIR SDA 100 Controller support
  • Audio lock behavior fix

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

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What's in this update

  • bug fixed: Audio lock was badly implemented. Now audio from the s​ound card is redirected to rear radio input and mic is cut under lock condition.
  • Icom IC-7600 and IC-475 support.
  • SteppIR SDA 100 Controlle​r support
  • bug fixed: Stereo signal was incorrectly reported to router in TX state.

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Other versions for this product

See the full firmware history for the MK2R