We were able to reverse engineer their update app. Only works on 10.9.2 Beta for now but pretty obvious that once real 10.9.2 update comes out, we will have permanent solution. Thanks go to Nvidia. nMP may have forsaken them, but they are still there for us. Fix Posted at Netkas BTW, this also brings new Fastest Mac card, GTX780 Ti. And yes, already have working EFI.