AC-MXNET-USP-PR ~ APP Ver V1.2.2.5 ~ MCU V1.40.0 ~ 04-17-2026

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

Please Upgrade the APP Firmware first, before applying an MCU Upgrade.

Latest AC-MXNET-USP-PR APP & MCU Firmware can be downloaded here: AC-MXNET-USP-PR APP+MCU Firmware

# Release notes - USP Software - USP-PR-APP V1.2.2.5 / MCU V1.40

### New Features

- Added Audio Embedding support to Open Streaming.

- [MCU V1.40] Added text rotation/flip capabilities every 10 seconds to prevent LCD screen burn-in.

### Improvements

- Improved responsiveness for progression counter during firmware upgrades.

- Cleaned up diagnostic log entries that could cause excessive bloat in file size over time.

### Bug Fixes

-Fixed an issue that prevented preview streams from being available on the USB-C Input.

- Fixed an issue that could cause preview streams to be lost after a factory reset of the device.

-Fixed a rare issue that could cause USB Subscriptions to fail to appropriately subscribe.

-Fixed an issue that could cause encoding process to fail if the encoder was set to Encoder-Only operational mode.

-Fixed an issue that could cause the USP Decoding software to lock up if the internal clock was abrubtly changed.

-Fixed an issue that could cause AXIS PTZ Camera's RTSP streams to fail to decode properly.

- Fixed an issue that could cause an abnormal device restart, if the USP endpoint simultaneously sent and received an IR command.

-Fixed an issue that could cause a latency drift when streaming third-party audio streams to a USP decoder.

- Fixed an issue that could cause audio to not re-populate from an existing external stream if the device was rebooted/power cycled.

- Fixed a rare issue that could trigger abnormal video loss until a soft reboot when rapidly subscribing to different video streams.

APP Ver V1.2.1.8 Release Notes:

New Features:

1. Initial Release Firmware.

Bug Fixes / Improvements:

1. Initial Release Firmware.

Known Issues:

1. If turning off Encoder operational mode on the target USP endpoint, the 'Decoder' LED on the front panel will turn off. This is only visual, as the encoder operational mode is still shutting down as expected.
   
2. If turning off Decoder operational mode on the target USP endpoint, the 'Encoder' LED on the front panel will turn off. This is only visual, as the decoder operational mode is still shutting down as expected.

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