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Computers that can be upgraded to use OS X Internet Recovery
Some computers that came with OS X Snow Leopard and earlier installed can use the OS X Internet Recovery feature after applying a firmware update.
Download and install an updated EFI Firmware ROM for these computers to use the OS X Internet Recovery feature:
Learn more
Learn more about available EFI firmware updates or about OS X Internet Recovery.
Some computers that are upgraded can't use the Internet version of Apple Hardware Test.
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