The orange flash is good news, it indicates that the camera correctly boots up, the SD card is correctly inserted, etc. After the LED flashes orange briefly, it should turn solid orange after a few seconds and stay solid orange. If that is not happening, maybe try:
1) maybe your computer is not providing enough power to the USB port. Please try a USB 3.0 port, and have a look there:
2) we have received a few cases of bad USB cables. Do you have any other mini-USB cable that you could try? Maybe from an external hard-drive?
Otherwise, please email us at firstname.lastname@example.org and we can arrange a replacement.