If you purchased your Viper VTX10 series esc (VTX1, 10, 10R or BE's) after July 2012, they have a55 in them. At the time we even recalled speed controls from A Main and distributors, just to put the latest software in them.

Common ProGauge/EZ Link mistakes
- not going back to the start screen and choosing the Save option after changes.
- after changes are made, hitting ESC, instead of OK, to go back -- this will actually not register the change you made
- having the plug from the VPort to the card plugged in backwards, getting failed error on card when trying to connect.

Hope that helps everyone little more....