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How I check EFI version on Imac 27"?

zinger123

zinger123

macrumors newbie
Original poster
Hello.
1.How to check the EFI version?
2. How to install EFI 1.6 to Imac 27" with 4850 (late 2009) on LION 10.7
I always get error massage - "this version cannot install with this system"!
 
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