I had the same problem whit IPV2S, device not found, it was because the USB driver was not instaled on my computer. For instal it you need to remove your battery then connect the IPV2S whitout battery ( normaly your IPV2S must be reconized). Now you can launch SXi program ( whit your device connected whitout battery), begin whit "connection icon" and "instal driver", then click connect button (you have message : "connected"), continue whit "upgrade icon" and "open file" to search your firware (.sxi) and finish by click on "upgrade button", wait and enjoy

one video here :
Sry for my bad english. i hope you can understand me and i have help you.