For example, you might want to update as part of a Makefile. You do need Java on the workstation to get everything working. We’ve seen ESP32 OTA done before.

Arduino developers and electronic enthusiasts may be interested to know that the official Arduino team has announced a new update to its Arduino Cloud that now allows you to update your ESP32 ...

In it, he shows an example of using all three ESP32 UARTs from an Arduino program. He calls the third port “secret” although that’s really a misnomer.