Just a "Thank you"...
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... to all the Duet 3D programmers. I just updated the Duet and the PanelDue to 3.4.0 - and especially the latter part shows how far you have come with simplifying the task: upload, right-click, choose "install" and that's it.
This is light years away from the old process with Bossa. Congratulations for making this so effortless!