I've got 2x Quattro 2748 running firmware 155 (the original) and I would really like to upgrade them so I can use assistants.
I have a Microsoft Surface and a MK3 adapter. I can connect to them using VE Connect and change/save existing settings with no problems.
However, when I try to use VE. Flash I go through the entire procedure and when it gets to 'Connecting' it fails saying cannot communicate with device. I've tried a couple of different cables, but no joy.
I can't use the new Victron Connect because my firmware is too old, so I am stuck. I did see one other thread with the same problem but the chap managed to fix it by forcing Victron Connect to update, but I have no such option. I don't have access to another PC to try.