Link 4K 20X - Firmware Changelog

Firmware Version: 0.1.37

Release Date: September 29, 2026

Changelog

v0.1.37

New Features

Camera and Image Controls

On: Removes the IR cut filter and allows the camera to use external infrared lighting for improved visibility in dark environments. Video is displayed in black and white.

Off: Keeps the IR cut filter active and maintains normal color video.

Dante Audio

API Command Additions and Updates

POST /api/v2/advanced/reset/{option}
Supported option values:
reboot
standby
privacy








Example: POST http://192.168.100.88/api/v2/advanced/reset/standby
A successful request returns an HTTP 200 response.

Security

Bug Fixes

  • Note: MIDI mappings are stored in the browser cache. Previously configured mappings will not be available if the browser cache is cleared or a different browser is used.

Known Issues

  1. FreeD Stream Activation: While FreeD data output and checksum formatting have been corrected and verified with Unreal Engine’s LiveLink plugin, the FreeD stream does not automatically start from the web interface. Users must select the desired stream option in the web interface and manually enable the stream using the Hex command (e.g., via Packet Sender): Enable Stream Command: D0 01 01 D2

  2. Multi-Target Select – Identification Persistence: When using Auto-Tracking with Multi-Target Select, identification numbers may not consistently stay assigned to the same individual when multiple people are present or cross paths. The Home button does not currently refresh or reassign bounding boxes as described, and a reboot may be required to restore numbering.

  3. Audio Input Volume adjustments (via the Web UI or HTTP commands) may not take effect as expected. As a workaround, adjust the volume from the connected input source.

  4. When performing a Network Reset, some network parameters, such as fallback addresses and TCP/UDP ports, may not return to their default values. These settings can be reset manually, or a Factory Reset can be performed to restore all options to their defaults.