This will fix your problem if others don't work. 100% cleaned.
Make sure to do this steps after reflash:
Resetting NVRAM
i) Shut down your Apple Mac.
ii) Locate the following keys on the keyboard: Command, Option, P, and R.
iii) Turn on your Mac.
iv) Press and hold the Command-Option-P-R keys immediately after you hear the startup sound.
v) Hold these keys until the computer restarts and you hear the startup sound for a second time.
vi) Release the keys.
And after that... reinstall the OS!
hello, so after flashing a firmware file to a previously firmware-locked MacBook (2015 a1466 820-00165 2925), the MacBook starts up and is lock free but the serial number is not the original (which I understand), but after changing the serial number back to the correct one in the bin file and re-flashing, the MacBook doesn't start. Is there a trick to this? does the model number also have to be changed? does that whole line have to be changed? 'thanks in advance everyone
Mike
hello, so after flashing a firmware file to a previously firmware-locked MacBook (2015 a1466 820-00165 2925), the MacBook starts up and is lock free but the serial number is not the original (which I understand), but after changing the serial number back to the correct one in the bin file and re-flashing, the MacBook doesn't start. Is there a trick to this? does the model number also have to be changed? does that whole line have to be changed? 'thanks in advance everyone
Mike
post the original bios and S / N on the case ...
Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests all donations are welcome, click:
hello, so after flashing a firmware file to a previously firmware-locked MacBook (2015 a1466 820-00165 2925), the MacBook starts up and is lock free but the serial number is not the original (which I understand), but after changing the serial number back to the correct one in the bin file and re-flashing, the MacBook doesn't start. Is there a trick to this? does the model number also have to be changed? does that whole line have to be changed? 'thanks in advance everyone
Mike
Hi, i have an A1466 with EFI lock, i don't have the original bin file and i've tried many files but same problem, macbook stuck at the end of the logo bar. Could someone send me a working file please.
Hi, i have an A1466 with EFI lock, i don't have the original bin file and i've tried many files but same problem, macbook stuck at the end of the logo bar. Could someone send me a working file please.
post S / N ... EMC ... motherboard model ... the bios that hangs at the end of the logo bar, even if it is not original ...
Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests all donations are welcome, click:
Hello i have a MacBook Air (13-inch, 2017), its with password, i have original dump, can anybody help me. I will attach original dump here.Thanks in advance
Last edited by piernov; 06-24-2022, 09:23 AM.
Reason: remove link to external host
Post the bios file in the forum, do not use external links.
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Sorry, now i put here the file. i dont see section attach, i am new.
I will attach now.
Very well, that will help all members have a repository of documents to compare and refer to to solve bios problems by themselves if they want.
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