Invalid key message

[99lsxstang]

Hi bill I just download the new 3.0 version when i try to write the tune into my car it says invalid key , I had tried two different keys still no work .. It wasn't working with the oldest version 2.4 so I figure upgrade .. I been able to use the scanner no problem but like I said its asking for new key and says invalid key every time ... Drivers had been install successfully not sure what else

[Bill@HPTuners]

Sounds like you are using an old key.

Try updating to your NEWEST key, not a random old key.

[99lsxstang]

Sounds like you are using an old key.

Try updating to your NEWEST key, not a random old key.

I was using the key that was asign to that specific vehicle from the beginning , do I have to use a new key for the 3.0 version .. Thanks

[Bill@HPTuners]

You have to use your NEWEST key, period.

[99lsxstang]

You have to use your NEWEST key, period.

Ok cool and for the 3.0 version to tune just engine being a six speed will I only need one credit or still two credits .. I been told I can use one credit for motor only no Trans ..

[Bill@HPTuners]

2 credits.