2019 iMac 21.5''

[kinano]

Sup guys, i recently purchased an imac from ebay that was supposed to work but the seller scammed me and sold me a mac that was firmware locked. 2 months of headaches and learning, i was able to get the bios chip out without damaging the computer . Is this firmware impossible to bypass, and if not, how can i clean it so that the firmware password gets removed?

[SMDFlea]

Re: 2019 iMac 21.5''

Open the bios with a hex editor and search for $SVS ,then fill the region you select with FF`s . There are lots of videos on youtube showing how its done https://www.youtube.com/watch?v=KCl6Iu8fSSI

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[MobileXT]

Re: 2019 iMac 21.5''

Please see attached clean. Re-program the bin file to the EFI chip and PRAM at the first start.

[kinano]

Re: 2019 iMac 21.5''

Please see attached clean. Re-program the bin file to the EFI chip and PRAM at the first start.

Thank you, i will give it a try!

[multitech]

Re: 2019 iMac 21.5''

Hey Guys, i have a 2019 iMac 21.5'' after flash the unlocked bios i cannot startup the OS X but i tried install Windows and worked well, any tips? thank you.