upgrade

Hi All, I was wondering if anyone knew what was required for a Swift Command firmware update or if it was possible to do yourself? Sargent have told me that I need to get it done by a Dealer but I was wondering if it's possible to do ourselves. Does anyone have any experience of this?

Hi everyone. We are now retired and have been caravanning on and off for the last 40 years. We have just taken delivery of a "new to us" Swift Challenger 580 se and have a question regarding the 20 watt solar panel that comes with it. I have been told this is wired straight to the Sargent power...