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Failed to confirm firmware?.....

motty154

motty154

macrumors newbie
Original poster
Oct 1, 2018
1
0
Hey guys!

When i try to upgrade my macbook pro 2012 mid i get this massage "Failed to confirm the firmware". I have replaced the original harddrive with an samsung evo 840 ssd.

Any clues how to fix this problem?
 
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