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Post originale di: ygryk ,


I have a 20" iMac Aluminium MA877 with HD2600 PRO. Just today I update it with new ATI MXM II HD4650 1Gb from Acer ( card. Physically it fits very well, the PCB design is pretty much the same. But unfortunately after power on the Mac I've got the black screen.

Googling I found that may be I need the EFI update for this card.

Could someone help me to make it work?