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BIOS Apple A1398 - 820-00138

Laptops and Desktop Bios, Schematic and Boardview Files And Repairing Discussion
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A1398 820-00138 051-00330
SCHEMATIC X425
Apple A1398 X435 051-00330 820-00138 boardview
 
About this board

Apple A1398 — motherboard 820-00138.

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 820-00138 in File Finder.

Attachments

Apple A1398 - 820-00138 – 1723206207249
820-00138-05 A1398 Bios.rar
4.3 MB · Views: 6
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