Hey @liv4muddin-
It will update when you plug back in, so if you would prefer to unplug it’s no big deal. That being said, we do tactfully plan firmware updates for the offseason because VERY occasionally (less than 1% of the time) your controller can get knocked offline in a specific way that prevents offline schedules from running. When this happens, we contact customers and help them resolve the issue, but we prefer this to happen when temperatures are a little cooler than in the dead of summer. If you unplug and then replug in at the beginning of the season, you may run into this issue when watering is more important.
Hope this helps
McK