Hello, I just installed my autotune unit on my PCV and was going to update it while I had it hooked to my laptop. I went to powercommander.com and downloaded the update, but when I go into the PCV program and click on update firmware it always comes up (invalid file). I have tried this a few times and each time it does the same thing. I would appreciate any help. Thanks

 

Did you unzip the file (doudle click the file you downloaded). If that doesn't work I'd try downloading the file again, unzipping it, and then try to update.