Calibration not supported, needs downgrade?

[mjalstad]

I ordered the Diablosport Predator for my dads 2004 dodge ram 2500 hemi, and according to the chart in the description, the programmer should be compatable. However, upon installation, it displays "calibration not supported". The current calibration is "56029042AI" and it needs to be downgraded to "56029042AH". It already has revision 9r14. Please help, thanks

[mikel]

once you let it do the downgrade, it will be supported for tuning