Macbook Air, EFI locked .bin backup is gone, what to do?

[davis12]

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?

[rioreno]

Re: Macbook Air, EFI locked .bin backup is gone, what to do?

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?

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...

[davis12]

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...

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 flashing

[davis12]

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...

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..

[fester]

Re: Macbook Air, EFI locked .bin backup is gone, what to do?

zip it and upload

[davis12]

Re: Macbook Air, EFI locked .bin backup is gone, what to do?

zip it and upload

off course :face palm:

[davis12]

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...

Uploaded the dump, does it help you to figure out what is wrong?

[rioreno]

Re: Macbook Air, EFI locked .bin backup is gone, what to do?

Uploaded the dump, does it help you to figure out what is wrong?

i know you got this file from ghostlyhack..i try to build with new ME region and clear NVRAM from MBA61_0099_B12_LOCKED. scap file .. but i'm not change ssn to your ssn..

please try.. and confirm..

goodluck

[davis12]

Re: Macbook Air, EFI locked .bin backup is gone, what to do?

i know you got this file from ghostlyhack..i try to build with new ME region and clear NVRAM from MBA61_0099_B12_LOCKED. scap file .. but i'm not change ssn to your ssn..

please try.. and confirm..

goodluck

Thanks a lot, I will try it and post back!

[davis12]

Re: Macbook Air, EFI locked .bin backup is gone, what to do?

i know you got this file from ghostlyhack..i try to build with new ME region and clear NVRAM from MBA61_0099_B12_LOCKED. scap file .. but i'm not change ssn to your ssn..

please try.. and confirm..

goodluck

Ok so if I add a serial number i get bkack screen and if I use the file from you without editing it boots fine but without serial number..can it make any performance or updates issues?

[rioreno]

Re: Macbook Air, EFI locked .bin backup is gone, what to do?

Ok so if I add a serial number i get bkack screen and if I use the file from you without editing it boots fine but without serial number..can it make any performance or updates issues?

are you sure empty? no ssn? That file should be still SSN(C02N2MGBG086) board SN(C0242820EPDFY5CAN) but not your ssn(C02MV7FUG085)/(C0242340CV9FY5CAP)

[davis12]

Re: Macbook Air, EFI locked .bin backup is gone, what to do?

are you sure empty? no ssn? That file should be still SSN(C02N2MGBG086) board SN(C0242820EPDFY5CAN) but not your ssn(C02MV7FUG085)/(C0242340CV9FY5CAP)

There is serial under sen but not recognised in the system information *unavailable* and when i add mine it goes black