AudioControl Firmware

ACP-BIJOU2100 Version 1.61 (August 03, 2026)
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DSP: 1.22

MCU: 1.61

MCU1.61/DSP1.22 072526
Addressed certain Samsung model compatibility with volume up/down/mute.
Add CEC power off disable option to allow control system exclusively control the power off
Fix LPCM 6.1 center channel Dolby mode folding to L/R.

Version 1.56 (April 08, 2026)
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DSP: 1.22

MCU: 1.56

MCU1.56/DSP1.22 040826:
Added modified CEC routines targeting especially LG latest models.

Version 1.55 (March 30, 2026)
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DSP: 1.22

MCU: 1.55

Changed

Signal sense / priority algorithms tuned for higher detection sensitivity

Added

Optional Sony eARC CEC compatibility mode
eARC CDS audio format selection: 5.1 surround, 2.0 stereo

ACP-BIJOU3100 Version 1.61 (August 03, 2026)
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DSP: 1.22

MCU: 1.61

MCU1.61/DSP1.22 072526
Addressed certain Samsung model compatibility with volume up/down/mute.
Add CEC power off disable option to allow control system exclusively control the power off
Fix LPCM 6.1 center channel Dolby mode folding to L/R.

Version 1.56 (April 08, 2026)
Download

DSP: 1.22

MCU: 1.56

MCU1.56/DSP1.22 040826:
Added modified CEC routines targeting especially LG latest models.

Version 1.55 (March 30, 2026)
Download

DSP: 1.22

MCU: 1.55

Changed

Signal sense / priority algorithms tuned for higher detection sensitivity

Added

Optional Sony eARC CEC compatibility mode
eARC CDS audio format selection: 5.1 surround, 2.0 stereo

ACP-BIJOU5100D Version 1.61 (July 25, 2026)
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DSP: 1.31

MCU: 1.61

MCU1.61/DSP1.31 072526
Addressed certain Samsung model compatibility with volume up/down/mute.
Add CEC power off disable option to allow control system exclusively control the power off
Fix LPCM 6.1 center channel Dolby mode folding to L/R.

Version 1.56 (April 08, 2026)
Download

DSP: 1.31

MCU: 1.56

MCU1.56/DSP1.31 040826:
Added modified CEC routines targeting especially LG latest models.

Version 1.55 (March 30, 2026)
Download

DSP: 1.31

MCU: 1.55

Changed

Revamped signal sense / priority algorithms for higher sensitivity

Added

Dante output speaker configuration: a decoded channel pair can be routed to the Dante network, expanding total channel count
Dante volume follow / fix
Optional Sony eARC CEC compatibility mode

ACP-CM-2750 Version v2.1.140 (August 17, 2026)
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Enhancements:

Improved the speaker profile upload process.

Changes:

Changed the Power Command and Mute Commands to function independently.

Fixes:

Corrected the audio output error affecting the Digital Audio outputs during zone off. If an unmute command was received after the zone had been powered off, audio would begin to be output.

ACP-CM-3750 Version v2.1.140 (August 17, 2026)
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Enhancements:

Improved the speaker profile upload process.

Changes:

Changed the Power Command and Mute Commands to function independently.

Fixes:

Corrected the audio output error affecting the Digital Audio outputs during zone off. If an unmute command was received after the zone had been powered off, audio would begin to be output.

ACP-CM-4750 Version v2.1.140 (August 17, 2026)
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Enhancements:

Improved the speaker profile upload process.

Changes:

Changed the Power Command and Mute Commands to function independently.

Fixes:

Corrected the audio output error affecting the Digital Audio outputs during zone off. If an unmute command was received after the zone had been powered off, audio would begin to be output.

ACP-CMD-2750

Dante Version v0.0.2.0 (August 18, 2026)
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Enhancements:

Added the ability to manipulate the Dante Network Settings

Main Version v2.1.140 (July 28, 2026)
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Enhancements:
- Added the ability to adjust the Dante Ports IP Address.
- Added the ability to adjust the Dante Channels Input Gain.
- Added the ability to ignore physical input switching commands when the Dante matrix is being used.
- Improved the speaker profile upload process.

Changes:
- Changed the Power Command and Mute Commands to function independently.

Fixes:
- Corrected the audio output error affecting the Digital Audio outputs during zone off. If an unmute command was received after the zone had been powered off, audio would begin to be output.
- Corrected some units Channels 3/4 and 7/8 Dante connections being swapped internally.

ACP-CMD-3750

Dante Version v0.0.2.0 (August 18, 2026)
Download Dante

Enhancements:

Added the ability to manipulate the Dante Network Settings

Main Version v2.1.140 (July 28, 2026)
Download Main

Enhancements:
- Added the ability to adjust the Dante Ports IP Address.
- Added the ability to adjust the Dante Channels Input Gain.
- Added the ability to ignore physical input switching commands when the Dante matrix is being used.
- Improved the speaker profile upload process.

Changes:
- Changed the Power Command and Mute Commands to function independently.

Fixes:
- Corrected the audio output error affecting the Digital Audio outputs during zone off. If an unmute command was received after the zone had been powered off, audio would begin to be output.
- Corrected some units Channels 3/4 and 7/8 Dante connections being swapped internally.

ACP-CMD-4750

Dante Version v0.0.2.0 (August 18, 2026)
Download Dante

Enhancements:

Added the ability to manipulate the Dante Network Settings

Main Version v2.1.140 (July 28, 2026)
Download Main

Enhancements:
- Added the ability to adjust the Dante Ports IP Address.
- Added the ability to adjust the Dante Channels Input Gain.
- Added the ability to ignore physical input switching commands when the Dante matrix is being used.
- Improved the speaker profile upload process.

Changes:
- Changed the Power Command and Mute Commands to function independently.

Fixes:
- Corrected the audio output error affecting the Digital Audio outputs during zone off. If an unmute command was received after the zone had been powered off, audio would begin to be output.
- Corrected some units Channels 3/4 and 7/8 Dante connections being swapped internally.

ACP-DMZ-M4800 Version v2.1.137 (August 17, 2026)
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Enhancements:

Improved the speaker profile upload process.

Changes:

Changed the Power Command and Mute Commands to function independently.

Fixes:

Corrected the audio output error affecting the Digital Audio outputs during zone off. If an unmute command was received after the zone had been powered off, audio would begin to be output.

ACP-DMZ-M4800D

Dante Version v0.0.2.0 (August 18, 2026)
Download Dante

Enhancements:

Added the ability to manipulate the Dante Network Settings

Main Version v2.1.139 (July 28, 2026)
Download Main

Enhancements:
- Added the ability to adjust the Dante Ports IP Address.
- Added the ability to adjust the Dante Channels Input Gain.
- Added the ability to ignore physical input switching commands when the Dante matrix is being used.
- Improved the speaker profile upload process.

Changes:
-Changed the Power Command and Mute Commands to function independently.

Fixes:
-Corrected the audio output error affecting the Digital Audio outputs during zone off. If an unmute command was received after the zone had been powered off, audio would begin to be output.

ACP-DMZ-M6400 Version v2.1.137 (August 17, 2026)
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Enhancements:

Improved the speaker profile upload process.

Changes:

Changed the Power Command and Mute Commands to function independently.

Fixes:

Corrected the audio output error affecting the Digital Audio outputs during zone off. If an unmute command was received after the zone had been powered off, audio would begin to be output.

ACP-DMZ-M6800 Version v2.1.137 (August 17, 2026)
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Enhancements:

Improved the speaker profile upload process.

Changes:

Changed the Power Command and Mute Commands to function independently.

Fixes:

Corrected the audio output error affecting the Digital Audio outputs during zone off. If an unmute command was received after the zone had been powered off, audio would begin to be output.

ACP-DMZ-M6800D

Dante Version v0.0.2.0 (August 18, 2026)
Download Dante

Enhancements:

Added the ability to manipulate the Dante Network Settings

Main Version v2.1.138 (July 28, 2026)
Download Main

Enhancements:
- Added the ability to adjust the Dante Ports IP Address.
- Added the ability to adjust the Dante Channels Input Gain.
- Added the ability to ignore physical input switching commands when the Dante matrix is being used.
- Improved the speaker profile upload process.

Changes:
-Changed the Power Command and Mute Commands to function independently.

Fixes:
-Corrected the audio output error affecting the Digital Audio outputs during zone off. If an unmute command was received after the zone had been powered off, audio would begin to be output.

ACP-DZ-D2800 Version v2.1.137 (August 17, 2026)
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Enhancements:

Improved the speaker profile upload process.

Changes:

Changed the Power Command and Mute Commands to function independently.

ACP-DZ-D4600 Version v2.1.137 (August 17, 2026)
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Enhancements:

Improved the speaker profile upload process.

Changes:

Changed the Power Command and Mute Commands to function independently.

ACP-RS-1000 Version v2.1.137 (August 17, 2026)
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Enhancements:

Improved the speaker profile upload process.

Changes:

Changed the Power Command and Mute Commands to function independently.

ACP-RS-500 Version v2.1.137 (August 17, 2026)
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Enhancements:

Improved the speaker profile upload process.

Changes:

Changed the Power Command and Mute Commands to function independently.