dsalsa Posted August 25, 2021 Share Posted August 25, 2021 Please help. I've been trying to install High Sierra in my machine for years now, obviously with no success. This is my third attempt in several years. I think my EFI is the problem. Can anyone tell me where can I find an EFI for my machine. Thank you. Writing this from working Sierra 10.12 Link to comment https://www.insanelymac.com/forum/topic/348691-need-help-installing-high-sierra-1013-on-my-sony/ Share on other sites More sharing options...
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