I'm trying to "download" my sketch (m5 file) to my Core2 via UIFlow.

I have no issues when using the "RUN" button. However, when I try to download the m5 to the device via either of the buttons on the interface, the Core2 just sits there with "Uploading..." written on the display.

When I push the "Refresh device status" button, it reports "connecting" in yellow, then "connected" in green. So the Core2 isn't lost to the world. I've waited for about 15 minutes with no change.

I can reset the Core2, and it reboots up in UIFlow.

Can anyone tell me what to try next?

Cheers!
Søren