Mac A1419 820-4652-A Apple
BIOS J78 CTX MLB
Schematic A1419 820-4652-A and boardview OK
BIOS J78 CTX MLB
Schematic A1419 820-4652-A and boardview OK
About this board
Files for the Mac A1419 motherboard, board number 820-4652.
What this thread covers
- 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 820-4652 in File Finder.
Attachments
Mac A1419 MLB CTX.pdf
10.9 MB · Views: 11
10.9 MB · Views: 11
Mac A1419 820-4652 .bin.zip
4.6 MB · Views: 9
4.6 MB · Views: 9
Mac A1419 820-4652.brd
3 MB · Views: 11
3 MB · Views: 11
