820-4924-A need bios unlock

[hani55]

Re: help me mac pro 820-4924-a

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thank you working 100/100

[Mrnixdorf]

Re: 820-4924-A need bios unlock

please clear me password

[peste]

Re: 820-4924-A need bios unlock

please clear me password

try..

[Mrnixdorf]

Re: 820-4924-A need bios unlock

Not working

[Vesko356]

Re: 820-4924-A need bios unlock

please clear me password

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[lazaro.089]

820-4924-A EFI password clear

Hi, I have this A1502 Macbook Pro with EFI Lock.
I dumped the EFI file and tried cleaning the password searching for $SVS but laptop won't turn on after that.

With original dump it boots OK, so I'm thinking I did something wrong with the EFI file.

Can someone please help me with password cleaning?

[Vesko356]

Re: 820-4924-A EFI password clear

Hi, I have this A1502 Macbook Pro with EFI Lock.
I dumped the EFI file and tried cleaning the password searching for $SVS but laptop won't turn on after that.

With original dump it boots OK, so I'm thinking I did something wrong with the EFI file.

Can someone please help me with password cleaning?

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[ultravarialheadspin]

a1502

hi, i am newbee on bios reading and writting.
I try unlocking EFI lock!

macbook pro a1502
serial :c02sf8kgfvh3
emc 2835
820-4924-A

i think this is original backed up .bin file
but i dont know it is 100% original bios file ( 80% it is )
after i try some efi files write read write read and now, when i was flashing this original bios on chip. ITS NOT CHARGING my batery on my macbook pro :-(
nad i need tutorial for my ssd disk, becouse its formated :-/
can someone help me or better go and jump from bridge?

[peste]

Re: a1502

hi, i am newbee on bios reading and writting.
I try unlocking EFI lock!

macbook pro a1502
serial :c02sf8kgfvh3
emc 2835
820-4924-A

i think this is original backed up .bin file
but i dont know it is 100% original bios file ( 80% it is )
after i try some efi files write read write read and now, when i was flashing this original bios on chip. ITS NOT CHARGING my batery on my macbook pro :-(
nad i need tutorial for my ssd disk, becouse its formated :-/
can someone help me or better go and jump from bridge?

try this .. the posted bios is longer..it was cut, and the password was cleaned ..

[ultravarialheadspin]

Re: a1502

try this .. the posted bios is longer..it was cut, and the password was cleaned ..

you are genius now macbook booting but when i make clear instalation from my usb stick ( mojave ) when instaling it restart on 10% cca 20 seconds when macbook booted. i dont know why ( bad .bin file? ) when i start notebook its shows question mark 8 times blink then macbook restarted then question mark and then 9 times blink and restarted all the time same

[peste]

Re: a1502

you are genius now macbook booting but when i make clear instalation from my usb stick ( mojave ) when instaling it restart on 10% cca 20 seconds when macbook booted. i dont know why ( bad .bin file? ) when i start notebook its shows question mark 8 times blink then macbook restarted then question mark and then 9 times blink and restarted all the time same

try this and be careful when writing ..

[ultravarialheadspin]

Re: 820-4924-A need bios unlock

i dont know what is : ( be carwfull when you written it ) when i desolder bios chip from macbook mltherboard i am going solderong onto xgecu pro. then i load your file, then click on erase all, and then click to writte your file. then unsolder and solder back to macbook pro board. then use usb mojave and press alt, then i am choosing usb stick instalation.

it is good or some fault on my steps?

[peste]

Re: 820-4924-A need bios unlock

i dont know what is : ( be carwfull when you written it ) when i desolder bios chip from macbook mltherboard i am going solderong onto xgecu pro. then i load your file, then click on erase all, and then click to writte your file. then unsolder and solder back to macbook pro board. then use usb mojave and press alt, then i am choosing usb stick instalation.

it is good or some fault on my steps?

I wrote this because the bios in post # 32 was longer than it should be..something happened to read them..it can also happen when writing ... (that means) ... somewhere you got it wrong..or the equipment bad..check the bios with the HxD program ..

[ultravarialheadspin]

Re: 820-4924-A need bios unlock

I wrote this because the bios in post # 32 was longer than it should be..something happened to read them..it can also happen when writing ... (that means) ... somewhere you got it wrong..or the equipment bad..check the bios with the HxD program ..

how it is possible? now the mackbook pro not boot, nothing happen when i start notebook with plugget charger.

the first bios that you post was good but all 20 seconds notebook restarted himself. idk why :-( it is battery not good? can be booted macbook without batery with power cable ?

[peste]

Re: 820-4924-A need bios unlock

how it is possible? now the mackbook pro not boot, nothing happen when i start notebook with plugget charger.

the first bios that you post was good but all 20 seconds notebook restarted himself. idk why :-( it is battery not good? can be booted macbook without batery with power cable ?

then use the bios that works.

[ultravarialheadspin]

Re: 820-4924-A need bios unlock

then use the bios that works.

first bios from you works great but after 20 seconds macbook bootloop restart same again again again

[hejmedmig]

Re: 820-4924-A need bios unlock

This bios is locked, can someone help?

[Vesko356]

Re: 820-4924-A need bios unlock

This bios is locked, can someone help?

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[Mazorca]

Re: 820-4924-A need bios unlock

I have the error "this computer is disabled" and the "find my mac" error too. Can someone unlock this file? Thank you in advance.

[Mazorca]

Re: 820-4924-A need bios unlock

Nevermind, I have successfully cleaned the bin file, after analyzing and comparing previous locked and unlocked files on this thread. I did the RAM reset too and was able to see the original owner and guest accounts, still passworded. New owner requested complete erasure of local hard drive. Thanks to our dedicated forum members.