3rd gen tuning?

I just got the mpvi2 and I am completely new to this.
But if I have a tune for an 05 cummins can I use on say my
Buddy's truck of the same year?
Or are they vin locked like the box tuners?

It?s all a credit based system like EFILive. Depending on vehicle, 2 or more credits per VIN. The MPVI2 is nothing more than an interface module between the software on a computer and the vehicle and does not become VIN locked. Tunes are only VIN locked if so chooses by the tuner.

Thanks bud!