ACOM 500S firmware v1.2

ACOM · Released Feb 19, 2024 · First seen Sep 13, 2026

Source: acom-bg.com

v1.2 is not the latest firmware for the ACOM 500S: the current version is v1.7 (July 16, 2025). Go to v1.7

In short — summary by updatemystuff.com

Introduces active automatic protection and improves CAT interface reliability.

  • New "active automatic protection" function
  • CAT interface: improved power setting and MIC gain handling
  • Auto-Operate disabled after hard fault errors

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

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What's in this update

  • NEW function: "Active automatic protection"
  • CAT interface: properly set power before tune
  • Increase threshold for 5V ma​x
  • YAESU CAT interface: restore MIC gain after tune
  • Improve code readability and add HW divisi​on (These changes are purely internal and have no effect on end-user experience)
  • Disable Auto-Operate after Hard Fault Error
  • Fix: selection of polling time and byte spacing

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Other versions for this product

See the full firmware history for the ACOM 500S