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Origineel bericht door: leggy ,

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First of all thank you for finding out a way to fix the thunderbolt problem on the 2011 MB Pro. I’d like to install the newer firmware on my 2011 machine too. Because I have a recent OS running (Catalina) I need to boot from a Mountain Lion image which I have on a USB key. I can boot from it but does anybody know how I can then run the firmware update file? Do I need to go into terminal to do it because the only options I have when I boot from USB are restore time machine backup, install Mountain Lion or disk utility but there seems to be no way to browse to the firmware update file to install it. Thanks in advance. Rob

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