Mac Mini A1347 820-3228-A
BIOS
Schematics
Mac Mini A1347 - 820-3228 - 820-3228-A Schematic
820-3228-B
BIOS
Schematics
Mac Mini A1347 - 820-3228 - 820-3228-A Schematic
820-3228-B
About this board
Files for the Mac Mini A1347 motherboard, board number 820-3228-A.
What this thread covers
- EFI firmware (full SPI ROM dump)
- Schematic (PDF)
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 820-3228-A in File Finder.
Attachments
820-3228-B BIOS.bin.zip
4.4 MB · Views: 22
4.4 MB · Views: 22
MAC_Mini_A1347_820-3228-A_Client_mx25l6406e BIOS.BIN.zip
4.3 MB · Views: 27
4.3 MB · Views: 27
Mac Mini A1347 - 820-3228 - 820-3228-A Schematic Diagram.pdf
1.4 MB · Views: 36
1.4 MB · Views: 36
