The current version of Sync-One2 firmware is v2.3.1.
This is the standard installation from serial number A22F7000 and higher.

To update your firmware, you’ll need these essential files:

Instructions
Firmware upgrade instructions
Instructions
Upgrade tool
Windows utility required to update the firmware
Update tool
Firmware
Sync-One2 firmware file
FW v2.3.1
Troubleshooting Common Issues
  • Update stops unexpectedly: If Windows reports “USB port type is unassigned”, check that your antivirus software hasn’t blocked the port.
  • Failed update recovery: If the update failed and your Sync-One2 entered API control mode, refer to the instruction document for steps to enter firmware update mode.
Firmware History
v2.3.1 (November 16, 2023)
  • Fix: Re-enabled performance optimizations that were accidentally removed in v2.3.0
v2.3.0 (March 28, 2023)
  • New Feature: Added Speaker Polarity testing
  • Note: Requires a specific test file from the Test Files section of the Sync-One2 website
v2.2.4 (July 14, 2022)
  • Fix: Corrected certain API commands
  • Required for: Python API control example usage
v2.2.3 (January 27, 2022)
  • Improvement: Enhanced API START command to return error when external audio is configured but no external audio connection exists
v2.2.2 (October 15, 2021)
  • Fix: Resolved auto shutoff issue when USB port is connected (corrects v2.2.1 problem)
  • New Feature: Added Auto Off trigger message display when timeout expires
v2.2.1 (October 7, 2021)
  • Fix: Compatibility update for OLED display module changes (affects serial numbers A22B3000 and higher only)
v2.2.0 (August 10, 2021)
  • New Features: API calls for audio and video trigger level settings (requested by Dolby)
  • Enhancement: Additional API commands for statistics management
v2.1.1 (April 5, 2020)
  • New Feature: Extended mode for measuring sync errors up to ±3000 ms (±3 seconds) – requested by Hisense for product development
  • Improvement: Increased maximum frame rate calculations from 99 to 120
v2.0.3 (February 18, 2019)
  • Fix: Enabled custom splash messages with special characters (previously limited to alphanumeric only)
v2.0.2 (September 12, 2018)
  • Fix: Improved video calibration and detection for low-light environments like post-production facilities with large projection displays
  • Acknowledgment: Thanks to Goldcrest (Soho, London) and HHB for providing access to their Dolby ATMOS facility for testing
v2.0.1
  • Internal field testing release
v2.0.0

Initial Sync-One2 v2 release

Understanding Version Numbers

Firmware versions use a three-part numbering system: major.minor.patch

  • Major Version: Significant new features and/or hardware changes
  • Minor Version: New features from development roadmap or customer requests
  • Patch Version: Bug fixes and corrections
Custom Features

Need something specific for your environment?

Custom modifications can be developed and integrated into the main firmware. Updates that benefit everyone are free.

If you require something specific to you, features can be permanently activated using feature codes through the API interface on a per-serial-number basis.