Pico-w5500 OTA
Mongoose's firmware update API make remotely upgrade the firmware on your Pico-W5500 devices without the need for physical access.
Mongoose provides a built-in API for firmware updates, and integrating the Mongoose library into a project for the Pico-W5500 is straightforward: simply copy mongoose.c and mongoose.h into the project's source tree and follow the guide.
https://mongoose.ws/documentation/#built-in-ota-firmware-updates
With this setup, firmware updates via Web UI or remote control, as demonstrated in the default example, become feasible.