Need model extractor for BGA package

Hello, friends)
Which tool i can use to extract spice model for BGA package?
I suppose any 3D EM solver would work. For example, Sonnet. Am i wrong? Have anybody already modelled BGA package? Can you share your experience...
Thanks for advance:)

IMO you cannot extract the Spice model of a footprint such as BGA. Spice model is more device dependent and so is IBIS model.

Why i cann't do EM simulation of BGA package, extract s-parameters and create broadband spice model like that Sonnet creates.