Tablesix

I bought a used 2015 Mustang with performance pack. Great car. So for christmas I bought myself the roush stage 2 power pack (throttlebody, cai and procal3.) So, after everything was installed, I try to load the tune only to find that it already has a stage 1 tune installed. I have no way of getting the information for said tune. So, I took all the hardware off and put the OEM back in place. No problems. Question is, how to over write that tune without going to a dealer, if that's even possible. Can I just purchase another tuner of a different brand ( bama, lund ect...) and overwrite possibly?

Thanks for the help.
P.s. whoever eningineered the sound tube should be brought up on charges.