I just got a Diablosport Trinity programmer, I plugged it into my car (2008 Corvette LS3, automatic w/Vararam) and every time I go to install my tune it says "Unable to finish writing tune", I press the "more info" button amd it says, "TCM error write failed (-1)" Does anyone know what's going on here?

 

Options/show information, what is the version shown there?

 

v.1r09f

 

I'd suggest restoring the stock tune to the car then update the device using DSDownloader.
If you register it, it will auto update to the latest versions.

The latest version for your application is 1r09h.

Thanks

 

That did the trick. Mike, thank you for your help.