I was slightly frustrated trying to update the firmware on mine. I tried loading the software on both a Win7 and Win10 machine and had the same issues.
It wouldn't recognize/load the device driver when I plugged it in. I found several methods online to correct this. What worked for me was to remove the battery from the device and plug it back in. Then, it loaded the Sxi USB driver.
So I was finally able to get it to recognize the device to upload the firmware, but only when the battery is out. If I have a battery in the mod, it will not recognize the device, even though the USB driver is loaded now.
I opened the firmware file, uploaded it, and should be good to go. However, the Sxi software still doesn't recognize the device to allow me to go into settings or anything like that. Only to load firmware. Maybe the device needs a battery in it to get into settings, etc, but mine won't recognize the device with the battery in it. Not really concerned about anything other than loading the firmware though, so I'm good to go.
It would be nice if they has software that worked as well/easily as Evolve. I spent probably 1.5 hours getting the firmware updated.
Very pleased with the mod though. Ordered a green stabwood last week. Should arrive this week.
What program did you use to open the Rar file? I received mine yesterday and plan on updating it tonight.