I'm sorry if this violates a forum rule, but I don't know where else to turn. I'm trying to fix an issue with my iMac 4,1 and it seems Netkas is the only community that might be able to help. However, their forum registration is broken (seems to happen a lot) and I can't find any way to contact...
AS REQUEST OF EXPÉRIENCED MEMBER, I'D LIKE TO MENTION AT THE BEGINNING, THIS TOPIC IS BASED ON MY OWN TEST, I BOUGHT THESE CARDS, MAKE EFI ROM DIRECTLY ON NETKAS SCRIPT, WITHOUT ANY OTHER MODIFICATIONS, AND FALSHED BACK THEN TESTED ON MAC PRO 5.1, 3.1, SO THIS IS AND ONLY IS A PERSONNAL ADVICE...
Some of you may be interested in this. MVC has a ROM in progress to allow installation of Nvidia 780m MXM GPU in 2009 - 2011 iMacs. Details over at Netkas forums, as usual.
iMac Holy Grail achieved ! Boot screens on 780m.