Sony VAIO BIOS archive for mainboard MBX-236, the name noting an Intel Core i7 configuration and a trailing 2_U_2 tag whose meaning is not stated. It comes as a 1.73 MB RAR. MBX codes are Sony's own mainboard identifiers, so compare the code and revision on the PCB before writing. Typical use is reprogramming the SPI flash with an external programmer when the laptop shows no picture or loops at startup. Save a full read of the current chip first and confirm the image size equals its capacity.
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 @biosarchive. Enginerys does not host this file.
All sources (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 28 Mar 2021 | Open file on RM Schematics |
| @Satale_bios_esquemas_Laptop | 30 Mar 2021 | 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.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →