Model 5534 Main Firmware

File Names: M5534v1r03.stm

Version History:

Version: 1.03
Release Date: 29-Jul-2026
Description: Makes improvements to the Analog Mic In Limiter. (Requires FPGA Firmware v2.02 and later and ZMAN Firmware v2.00 and later)

Version: 1.02
Release Date: 23-Jul-2026
Description: Adds mic limiter function. Fixes bugs related to communication between Main MCU and STcontroller. Adds Any Talkback Active selection to GPO 1 and GPO 2. Changes GPO 1 and GPO 2 Active State default to Active Low. Changes default Analog Mic In Gain to 40 dB. Updates webpages to reflect updated network information including the additional ZMAN out-of-band Control IP address. (Requires FPGA Firmware v2.02 and later and ZMAN Firmware v2.00 and later)

Version: 1.01
Release Date: 02-Apr-2026
Description: Fixes bugs related to setting value displays on web pages, ST 2110 Gateway display on the front-panel menu, and Signal Present Display functionality. Adds Main 1 and Main 2 Listen Modes and Sidetone Minimum Level. Reduces communication time between Main MCU and Secondary MCU for faster user input recognition and LED indication.

Version: 1.00
Release Date: 20-Jan-2026
Description: Initial Release.