BIOS firmware package for a Sony VAIO built on the MBX-219 motherboard, marked as unlocked, which usually means the supervisor or setup password protection has been removed from the image. The RAR is about 510 KB, so expect a raw dump inside meant for writing straight to the SPI flash with a programmer such as a CH341A. Read and save the original chip contents first, verify the image size matches the flash capacity, and check that the board really carries the MBX-219 code before writing anything.
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 @IT_SERVICE_WORLD. 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 | |
|---|---|---|
| @IT_SERVICE_WORLD | 1 Oct 2019 | Open file on RM Schematics |
| @IT_SERVICE_WORLD | 2 May 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 →