@frlobo, I guess @mdma refers to a full one-button integration of USB flashing without further ado (e.g. pre-installation of utils or any typing).
But if you’ve already got Spark CLI and DFU-util installed on your machine, it’s just a few clicks and key-presses away.
If you look in the bottom status bar of Spark DEV you’ll see a
+ with a console symbol. If you click on that a command line pops up where you just enter
spark flash --usb and paste in the full path of your last created bin file (which you obtain by right clicking on it in the directory tree) - you just need to put your Core into DFU mode and hit Enter.
If anybody knows of an easier way (e.g. key short cut for
spark flash --usb and/or full path of bin file), I’d be grateful