2026-03-03 : Release candidate 0 for version 4.3 of Lumitec poco FW+UI
    * OTA file: "poco-fw-ota_4p3-b4.bin" - MD5: 3d4050a4006f34de71724a231adea0c1 - CRC32: 69d39790

Poco FW Changes from 4.3-b3 to 4.3-b4 (BETA):
* Improvements to Sound-2-Light onset detection algorithm. Now targets bass/kick-drum hits.
* Bugfix PocoFx: chase disabled after 1st cycle of chase modes.
* Re-Implemented PLI-Sync feature (was broken since 4.3-b1). Now working on Expander channels as well as local.
* Refactor several tasks into standardized class: PocoFx, Sound2Light, MultiCastJson
* Bugfix Ethernet CGI: strings not null terminated caused corrupt display of longer IP address.
* Bugfix MulticastJson: (Navico MFDs service advertisement) should wait for a valid IP address, and thread safety.

Poco embedded WebUI Changes from 4.3.0 to 4.3.1:
* Channel Expander: improvements to assign and add/remove channels.
* Restored (for now) "ALL CHANNELS" option to default config.