I installed a new SmartSolar MPPT 75/15 with solar panel on a boat. App Victron Connect on my smartphone is v5.8. VictronConnect connects with the device, but now wants to update the firmware (from 2.14 to 2,19 I think) and says it is essential for further use of the App. The problem: my boat is at a place off grid, not net connection for my mobile. When I go home and have internet connection, VictronConnect logically does not find the MPPT and does not ask for updating firmware. Can I save the firmware to my smartphone and then upload the firmware to the MPTT without internet connection?