Apple iMac 21.5" A2116 2019 BIOS UNLOCK

[peste]

Tried but not booting up. I put back the original firmware and it boots up

try..

[jermac0711]

try..

Thank you but still black screen after flashing this. Original bios is working fine

[piernov]

https://www.badcaps.net/forum/troubl...=4#post1622423

Invalidate the CBF2CC32 NVRAM variable in that SVS store which contains the encrypted password. You just have to change one bit in its name, so like replace the C with an A or whatever. Note that strings are UCS-2 encoded, so in the hex editor it'll show up as 0x43 0x00 0x42 0x00 0x46 0x00 etc.

If there is an iCloud pin, you need to perform 3x PRAM reset after removing password. If FindMyMac is still enabled, you have to reinstall macOS while being disconnected from the Internet, then reconnect after logging in and bind to a new Apple account.

[Mehmet Korhan]

Hey guysI have a 2019 iMac A2116 I need the bios firmware lock removed.
I tried using the hex editor for $SVS but i dont know how far down i'm supposed to highlight to change to FF. Can you help me with this? There are multiple instances for the $SVS as well. It's a 16MB Chip.

Will try my edit first. But would like someone with more knowledge to do it so i can compare and learn.

Thank you!

2019 iMac 21.5 4K
A2116 Model
SN: C02FG3FS07F6

[volinakis]

Hey guysI have a 2019 iMac A2116 I need the bios firmware lock removed.
I tried using the hex editor for $SVS but i dont know how far down i'm supposed to highlight to change to FF. Can you help me with this? There are multiple instances for the $SVS as well. It's a 16MB Chip.

Will try my edit first. But would like someone with more knowledge to do it so i can compare and learn.

Thank you!

2019 iMac 21.5 4K
A2116 Model
SN: C02FG3FS07F6

post ORIGINAL bios. If it's the original one try this and perform 3x PRAM reset at 1st boot. If you had read post #23 , you could have done it yourself.

[Mehmet Korhan]

post ORIGINAL bios. If it's the original one try this and perform 3x PRAM reset at 1st boot. If you had read post #23 , you could have done it yourself.

Hey brother. This is the original bios. Thank you.

I did read it. Just didn't understand it. Haha.

Will try now!

[volinakis]

Hey brother. This is the original bios. Thank you.

I did read it. Just didn't understand it. Haha.

Will try now!

what is unclear? Master piernov was very explicit!

[Mehmet Korhan]

what is unclear? Master piernov was very explicit!

I couldn't find the string he mentioned. LOL. I'm still learning. Don't judge me :')

[volinakis]

I couldn't find the string he mentioned. LOL. I'm still learning. Don't judge me :')

use UEFITool if you don't find in HxD. Or search for Mac EFI Toolkit on this forum, someone posted a tool for macs and it has positive feedback.

[Mehmet Korhan]

use UEFITool if you don't find in HxD. Or search for Mac EFI Toolkit on this forum, someone posted a tool for macs and it has positive feedback.

Hey, It has remote management on it as well. ust tried doing a fresh install and it wont let me go to the next page without enrolling it.

[volinakis]

Hey, It has remote management on it as well. ust tried doing a fresh install and it wont let me go to the next page without enrolling it.

change serial number or bypass MDM. Did you reset PRAM 3 times?