I’m running 3.203 based on this post as I need the manual configuration to be remembered.
I just use the buttons in the UI and the hardware button, so after pressing “Disconnect” and then just powering off, the next time I power on the modem doesn’t start. Conversely, if the modem is up and running when I press the power button, the next time I start the device, the modem starts.
Not sure if it makes a difference, but I have the EP06-A modem, not the EP25.
Cheers.