I loaded all my tunes using my wife's MacBook.

I had the tunes emailed to me from Coopers Custom Solutions and had no issue loading them to the SD card.

The only thing I haven't needed to do yet is update the firmware or anything and I have not downloaded the MM3 autoagent.

I think i'm going to do this in the next few days and just see if the app will download on the mac.

The tuner is only about a month old so I would be very surprised if it needed to be updated.

Hope this post helps some of you guys out.