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APPLE iMAC A1418 - 820-3482-A

Laptops and Desktop Bios, Schematic and Boardview Files And Repairing Discussion
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iMAC A1418 820-3482-A
BIOS
051-9889
820-3482-A
Schematics
Boardview
 
About this board

This thread is for the iMAC A1418 with main board 820-3482-A.

Files usually needed for this board
  • EFI firmware (full SPI ROM dump)
  • Schematic (PDF)
  • Boardview (.brd / .bdv / .cad)

Typical reasons to reflash: no boot or no chime after a firmware update, a firmware (EFI) password lock, or a corrupted ROM after liquid damage.

Back up the original dump first — it contains machine-specific data (serial, UUID, MAC, ME), and you will want it if anything goes wrong.

If you have a working file for this board, please share it below. More files: search 820-3482-A in File Finder.

Attachments

820-3482-A .brd
722.1 KB · Views: 5
820-3482-A.pdf
3.6 MB · Views: 5
T_link01(new).exe.zip
329.4 KB · Views: 3
820-3482-A BIOS.zip
4.3 MB · Views: 3
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