I have a Duet Controller purchased on eBay that I would like to use to replace my current Controller. But the firmware is old, and the update won't go through. It starts downloading and stalls after 5% or so, then times out. Does anybody know what might be causing this?

Also, isn't there a way to install the firmware update using an SD card? Are there instructions for this somewhere, or does somebody know how to do it? And where would I get the update file?

Any help/advice greatly appreciated!