Do I need to upgrade my OS? Currently have 3.6.26

I'm trying to open the tune repository and I have a pop up window telling me I don't have the correct operating system. Is this referring to the 3.6.26 version and going to the latest 4. something? I read a few discussions about this and even for the PRO HP tuner seemed like it caused them a big headache. I'm trying to open a stock tune in the tune repository to compare some parameters. I also read that this particular upgrade was free. I currently have the previous interface, PRO version and I'm fine with it. I was reading that I would have to upgrade that also.


If someone could give me a run down on what I need to do or direct me somewhere that has a fairly detailed guide of how to do this.


Thanks

Just download the latest software, that is the only way to read repository tunes.

3.6 is an older version, I think they've been on 4.0+ since early last year some time.

4.0+ has more features and more tables too.

Got it updated. Able to use Tune Repository now. Compare feature is a nice touch.