Adds Valens Update, Support For Proxy Port 9004, And Four Zones VOut

Improvements

• Valens firmware is now updated to 7.5.4.

• When auto-switching is enabled, and no source signal is present, it will fallback to the last selected source with signal.

• Added support for proxy port 9004 on the local RS-232 port.

• Added support for iPad Pro resolutions.

• VOut command now supports four zones.

Bug fixes

• Auto-switching now works with the AT-OME-MS42 and AT-OME-SR21.
• USB and video quality no longer degrade when cascading HDBaseT extenders.
• Improved video and USB auto-switching compatibility.
• AT-OME-EX-TX/RX USB hubs now turn off when no USB host connections are detected.
• MIC/LINE audio now s correctly over HDMI and HDBaseT outputs when a DVI source is present.
• RS-232 and IP commands now support up to 95 characters.
• Local RS-232 port will now control a local display while using TCP proxy port 9002. (Unit control through RS-232 inactive while controlling a local display).
• HDBaseT now correctly passes RS-232 commands.
• Hex commands now work when using RS232zone commands.
• Improved compatibility with AT-OME-SW21-TX-WP.
• Updated language consistency across the web UI.
• Improved robustness of Web GUI with respect to specific security scanning software.
• Usernames can no longer be duplicated.

Open issues

• CEC commands do not always trigger some Samsung displays.