Reply: Mid-2014 MBP 13 Retina flashing EFI-ROM tutorial

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Topic History of: Mid-2014 MBP 13 Retina flashing EFI-ROM tutorial

Max. showing the last 6 posts - (Last post first)

1 month 4 weeks ago
Mid-2014 MBP 13 Retina flashing EFI-ROM tutorial

looking for a tutorial also. won a 13" 2015 mbp from a auction that has d.e.p. on it. let me know if you find a guide especially for the how to clean me region.

2 months 3 weeks ago
Mid-2014 MBP 13 Retina flashing EFI-ROM tutorial

Hi,
can somebody guide me to a tutorial on how to flash an EFI-ROM on Mid-2014 MBP 13 Retina?

Especially about:
- how to update the checksum on the Fsys block after changing the S/N
- how to clean the ME region

I need to flash a new EFI-ROM, because something went wrong on Boor Loader Version update on macOS Mojave and I lost all information on the Fsys block.
The result is MBP is missing S/N.

Thanks,
Z.

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