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BIOS iMac 820-01237-A

Ďuring OS updation system was shutdown after few minutes when i tried to powering on then system is on but no display . We have diagnose the BiOS file was corrupted . We have tried another BIOS then display come but that BIOS is FirmWare Locke
 

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820-01237 og.BIN
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Ďuring OS updation system was shutdown after few minutes when i tried to powering on then system is on but no display . We have diagnose the BiOS file was corrupted . We have tried another BIOS then display come but that BIOS is FirmWare Locke
so you need to use a different BIOS
 
We have used Above mention BIOS . Display is coming. After that We installed the Mac OS Catalina. Installation completed and then showing below attached error and machine not booting
 

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IMG_8852.jpg
We have used Above mention BIOS . Display is coming. After that We installed the Mac OS Catalina. Installation completed and then showing below attached error and machine not booting
this is problem hardware and MAC OS

you can try test hardware like this
 
Если я дам вам свой дамп bios imac 2019 model A2115, можете ли вы удалить с него пароль EFI?
 
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