O. K. here's the deal. I bought a Quadzilla XZT+ from a dealer on ebay. Installed it and love it. Problem is I am unable to update it. It keeps disconnecting from my computer. I've tried my laptop and computers at work and get the same results. The L. E. D. inside just flashes. I've been contacting Jeremy @ quadzilla via email and he says the light should be on constant and he is stumped. I do have the latest software from Quadzilla for windows vista. Anyone ever have this problem or any ideas? I would love to have a few more features plus the aggresive tunes.