ACOM 700S firmware

Firmware history

All versions below were published by ACOM on acom-bg.com. Third-party and modified firmware is never listed.

1. Version 2.3 Latest Released Jul 16, 2025 First seen Sep 7, 2026

   CAT-controlled ATU tuning now supports listen-only CAT with improved stability and error handling — summary by updatemystuff.com

   Source: acom-bg.com

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   • Improve stability during CAT-controlled ATU tune
   • Make the ATU Tune process work with listen-only CAT
   • ​Fix ATU tune with unidirectional (listen-only) CAT
   • Retry CAT commands only when the radio does not respond
   • Try not to switch to manu​al tune mode when CAT error detected
   • Do not hardcode 100 mic level maximum for TS-990 and similar
   • Properly save the radio mic gain before tuning
   • Always report band number in telemetry messages
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2. Version 1.9 Released Mar 21, 2024 First seen Sep 13, 2026

   Source: acom-bg.com

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   • Only internal code changes The​se changes are purely ​internal and have no effect on end-user experience
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3. Version 1.8 Released Feb 19, 2024 First seen Sep 13, 2026

   Adds active automatic protection feature, improves CAT interface control, disables auto-operation after hard faults. — summary by updatemystuff.com

   Source: acom-bg.com

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   • NEW function: "Active automatic protection"
   • CAT interface: properly set power before tune
   • Increase threshold for 5​V max
   • YAESU CAT interface: restore MIC gain after tune
   • Improve code readab​ility and add HW division (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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4. Version 1.6 Released May 19, 2022 First seen Sep 13, 2026

   Source: acom-bg.com

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   Small firmware imp​rovements based on m​inor hardware changes;

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5. Version 1.0 First seen Sep 13, 2026

   Source: acom-bg.com

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   Base firmware version;

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