Re: EFIBIN File MacBook Air A1466 (EMC 2632) 820-3437-B
[LIST][*]FW downloaded[*]Serial changed[*]Flashing...[*]Power reset -> Mac back to life! [*]Reinstall -> Catalina update -> All is fine![/LIST]

The "not last version" of the wirmware was an unexpected benefit because now I can see that Catalina updated again the firmware with the very-last release (118)

Thankyou very much for the support.
Mapiro

• Re: EFIBIN File MacBook Air A1466 (EMC 2632) 820-3437-B
  [LIST]
• FW downloaded
• Serial changed
• Flashing...
• Power reset

Re: EFIBIN File MacBook Air A1466 (EMC 2632) 820-3437-B

Thankyou piernov.
(BTW: I really liked your mac-videos on YouTube, after seeing them I searched for your contact to to ask you some questions, without success. By chance, I found you in this forum! ).

My CH341A detects the EFI chip only if I do as in the video I posted: internal battery disconnected, external power connected and then PC powered down by pressing power button.

This way I can read EFI more times, getting identical dumps, [B]until I unplug the external power[/B].
...

Re: EFIBIN File MacBook Air A1466 (EMC 2632) 820-3437-B

Hi, I'm new on the forum.

Me too I'm fighting with MacBook Air Early 2014 bricked by Catalina upgrade (screen totally black, key combinations do not work).

I bought CH431A programmer and I build my own connector (very micro-solding challenge).

@mferna14
Did you try doing as [URL="https://youtu.be/Y7l6X51LQk4?t=124"]https://youtu.be/Y7l6X51LQk4?t=124[/URL] ?
With this trick I'm able to detect the chip.

@piernov
I downloaded the firmware...

Re: New Members - please post your introductions here

Hello, I'm Mapiro. Happy to join this forum.