The WiFi firmware update for STM32H573I-DK + MB1400 daughter board with MXCHIP EMW3080B is also available at https://www.st.com/en/development-tools/x-wifi-emw3080b.html with the V1.1.0.Some Wi-Fi examples for this board can be found under STM32Cube_...
It is supported on this data sheet describing the EMW3080 module. On the B-U585I-IOT02A board, you use an STM32 host API that will interface with this EMW3080 module. This is where it is not supported.
