I don't know what happened but the backup file of the BIOS is gone and I already erased the chip, now with a new dump it loads but stuck before login.
What is my possibilities here?
What is my possibilities here?
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Re: Macbook Air, EFI locked .bin backup is gone, what to do?
you can start from your serial number from back cover...
after that you can go to
https://everymac.com/ultimate-mac-lookup/
get your detail from there...
now you can compare your bios with the detail you got..
better post your new dump here and your serialnumber+mainboard code,
someone can help here...Last edited by rioreno; 10-21-2017, 12:52 PM. -
Re: Macbook Air, EFI locked .bin backup is gone, what to do?
I tried with the sn of the machine I added it to the line after ssn but no luck..is the serial number that in the .bin file is the same as the machine serial number?? I was sure it is a different SN..maybe the location I added it is wrong? New to the EFI flashingComment
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Re: Macbook Air, EFI locked .bin backup is gone, what to do?
I can't upload the .bin file to here but its a file which I downloaded from ghostlyH by the EMC and the specifications of the computer so it should be just fine.
This is the SN from the bottom case: C02MV7FUG085 and this is the SN on board: C0242340CV9FY5CAP
Not sure how am i suppose to upload the dump since the site don't accept .bin files..Last edited by davis12; 10-22-2017, 06:13 AM.Comment
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Re: Macbook Air, EFI locked .bin backup is gone, what to do?
zip it and uploadComment
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1. RESET MACOS WITH IPSW
a. Power off MacBook, press and hold the power button to enter Recovery
b. Open Disk Utility, remove Macintosh HD
c. Reboot, connect to the network to Activate Mac.
d. Plug the C cord in the first port of the MacBook into the other Mac, then power off the MacBook
d. Hold down the Control (L) + Option (L) + Shift (R) + Power key combination for 10 seconds
e. Release the other keys, but keep holding the Power key for another 10 seconds
f. MacBook is returned to DFU, open Apple Configurator 2 on the other Mac, right-click... -
I have a liquid damaged 820-02016 that has a 1-2mm wide hole in the PCB caused by a burned capacitor. The PPBUS_VON is shorted. I think the board is 100% gone, I tried grinding off the burned PCB material with no avail, the board is burned almost through to the other side.
But, I can get a fully working iCloud locked mainboard for very cheap.
As far as I have seen, there are only two ROM chips on the board, the TBT ROM and main flash.
Is it possible to transfer these two ROMs from the bad board to the good locked one and "unlock" the good... -
I am looking at an A2337 and found this for the order of power rails and what they do. Can this be confirmed before I dive into hunting down power rails that do not exist or are not neccisary?
- PPBUS_G3H (12.6V-12.8V)
- This is the main power rail that supplies power to the entire system. Check this rail first, as it must be present for other power rails to work.
- PP3V42_G3H (3.42V)
- This power rail is derived from PPBUS_G3H and is used to power the SMC (System Management Controller) and other essential circuits. It should be present if PPBUS_G3H is working correctly.
- PPVRTC_G3H (3.3V)
- This
- PPBUS_G3H (12.6V-12.8V)
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I tried using Configurator. When I try to do anything it just reboots to recovery with no option for terminal. I'm not sure if it is also icloud locked however I do not think so. Do I have any options? -
I’m working on one macbook air 15” m2 that was water damaged.
keyboard, lcd, microphone connectors were damaged so i’ve replaced all of them and without screen connected macbook worked fine. Keyboard &trackpad and also lid sensor was working fine.
i’ve put macbook in shelf and order new screen so i can fully repair it.
Now i got the screen and macbook stays at 5v 0a.
i’ve tried if it’s not in DFU with another macbook but it’s not detected at all.
i don’t have schematics so i don’t know where to start can someone help me?...
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