ZIP archive of 4.16 MB for an Apple A1347 Mac mini, logic board 820-5509 revision A, containing firmware described as locked and unlocked versions. Bloqueada is Spanish for locked, so the package likely holds the original password-locked dump alongside an unlocked one. Extract it and flash the appropriate image to the SPI flash chip with a programmer. Check the board number on the PCB, back up the existing chip, and verify the extracted image size matches the flash capacity before writing.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @efibios. Enginerys does not host this file.
All sources (4)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @efibios | 30 Jul 2020 | Open file on RM Schematics |
| @pepeelectronica | 26 Apr 2022 | Open file on RM Schematics |
| @schematics_bios | 25 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 2 Aug 2026 | Open file on RM Schematics |
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →