The V3 software for the V3 esc will not be compatible with no other esc that hobbywing manufactures not even oem .But please dont forget no one will be left out 2.0 or the 2.1v because we will continue to improve the software that is present now .some of the settings made available on the v3 esc will eventually step by step make there way to the v2 units .

There are 28 settings now for the v3 esc from the present 16 settings on the 120 amp 2.1.

If you talking about the v3 508 zero timing yes that will work with the sct pro .