I got the new OT3 today and I'm having a problem. When I hook it to my computer, and click connect, That button goes grayed out, and i eventually get a message that says "ready to connect, reset tracker" (something pretty close to that) When I power cycle it, I get a warning-message box that says "OTWINCFG communications error (BLver00)". Ticking the box "ERASE/ RELOAD FIRMWARE" has the same result as does "DISABLE TURBO"
An observation: With my other OT3, upon application of power, the two LED's on the front go red and then off. On this one they go orange, green and then off. It may not mean anything, or it may be a clue for you.
I have used my OTUSB as a guinea pig and it connects correctly, confirming that my hoo kups are good.
I still have a couple weeks til the race, Here's hoping.
Thanks and 73, Ron (KC8SFQ)