Hi,
I just started with an Core S3 and UIFlow 2.0. I am absolutely delighted about the OTA feature.
One thing I could not find out by extensive research:
When I once use the button "Download the button to the device" I cannot get back to the initial configuration UI.
It appears like there is a main.py saved to the Core S3 and whenever it boots this is executed.
Am I missing something - i tried all kinds of key-pressing during boot?

An related question - I would like to connect via MQTT to a server. Do I need to initialize Wifi inside my app? Obviously the device is online itself as this enables OTA. If I should use the configured WIFI - is it possible to try to connect to a fallback WIFI-Network in case the configured Network is not available (I plan to use the device in a mobile scenario).

Thanks for Your help!
Ralf