Hmm.. Can you just double check with this?
@Hypnopompia, what's the version of DFU on Ubuntu 14.04?
OK i see what might be wrong as well.
Can you use this patch instead: https://github.com/spark/cc3000-patch-programmer/tree/nobuttons/build
You can use this this code to flash:
dfu-util -d 1d50:607f -a 0 -s 0x08005000 -D cc3000-patch-programmer.bin