2026-03-26 : Release candidate 1 for version 4.3 of Lumitec poco FW+UI
    * OTA file: "poco-fw-ota_4p3-rc1.bin" - MD5: 6cff2bd8b7745aa1b8150feaff907bc1 - CRC32: bfeb3316

Poco FW Changes from 4.3-b4 (BETA) to 4.3-rc1:
* Feat: #88 Poco Expander Role
* Bugfixes to task lifecycles, and various crashes.
* Bugfix: CAN driver issue where Tx is asserted dominant during initialization for \~1.8ms which caused bus error.
* bugfix audio gain control max level should be 126 b/c higher is non-linear. Allow AGC to increase to max 126.

Poco embedded WebUI Changes from 4.3.1 to 4.3.2:
* Handling of Channel Expander Role (display state, enter, and exit).
* Misc. UI improvements and bugfixes.