If you buy a new unit it will most likely need to be registered on line first on Diablosports website
then you DL the Update Tool to your PC/LapTop (via supplied disc or online download )
it will automatically check to make sure you have the latest software version...
Then you transfer that to your Tuner via usb connection, then install on your Ram
I like the Throttle Booster!
and the option to disable traction control "ESP" 100%.
I only use the 93 Tune on my Trinity, latest crom dcx_gas v.1r08b
Maxed out all my rev limit/speed limiter settings and shift points.
Results with my weak open rear diff with lousy 3.55:1 gear ratio
and Heavy (90 pounder combo) 20" Wheels with Grippy 305/50R20 Terra Grapplers on clean dry pavement...