Please ensure your endpoints are greater than APP Version V1.2.0.7 before proceeding.

The recommended update procedure for the USP product line is as follows:

1. Upgrade the USP-CBOX to the latest firmware available.
   
2. Upgrade the USP Endpoints to the latest APP Firmware available.
   
3. Upgrade the USP Endpoints to the latest MCU Firmware available.
   
1. If upgrading from APP V1.2.2.5 to APP V1.2.3.9 or later, factory reset the updated endpoints after upgrading the MCU.

Key Upgrades

1. Generic USB touchscreen control (e.g., Samsung commercial displays) with improved USB HID device/host handling.
   
2. Dante audio overhaul: startup and reachability recovery, audio-format re-synchronization, route restoration, and HDMI OUT Dante output fixes.
   
3. USB-C input improvements: stable HDMI ↔ USB-C switching plus accurate input status and hardware recovery.
   
4. MCU V1.43: improved recovery from unstable sources, fixed Apple TV source-switch signal re-locks, and corrected HDR metadata on initial output sync.