A BIOS / firmware dump for Sony hardware (board MBX-266). Shared as “mbx-266 ok s bios world.rar” — a .rar file, 2.28 MB.
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 @sboisworld. 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 | |
|---|---|---|
| @sboisworld | 2 Sept 2025 | Open file on RM Schematics |
| @skclappybios | 2 Sept 2025 | Open file on RM Schematics |
| @dtechbios | 2 Sept 2025 | Open file on RM Schematics |
| @sbiosworldchannel | 7 Oct 2025 | Open file on RM Schematics |
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
7-ZipWinRARThe Unarchiver (macOS)
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →