MBX-205 – Sony M850
The Sony M850 is built on the MBX-205 board. ChambersDesignInc.com has indexed 2 files for this board — 2 BIOS files.
Revisions seen in file names: 1.0. The earliest file dates from March 2019 (BIOS Archive).
BIOS dumps 2
FileSizeRevAddedSource
Board facts
| Board number | MBX-205 |
|---|---|
| Numbering | Sony board number |
| Revisions | 1.0 |
| First seen | 2019-03-06 |
| Source channels | BIOS Archive |
| About the number | Sony VAIO main boards are named MBX-xxx; the same board also has an ODM (Quanta, Foxconn, Wistron, Compal) number. |
Laptops that use MBX-205
What these files are for
A BIOS dump is a full image of the board's SPI flash chip. It is written back with an SPI programmer when the original firmware is corrupted, after a chip replacement, or to recover from a failed update. Read and save the original chip first: serial number, DMI data and the Intel ME / AMD PSP state differ between boards.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .rar | RAR archive | 7-Zip or WinRAR |
| .zip | ZIP archive | 7-Zip, WinRAR or the built-in Windows extractor |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
Which laptops use the MBX-205 board?
Files in the catalog link MBX-205 to the Sony M850.
Where do the download links go?
Each button opens the original public Telegram post the file was shared in. ChambersDesignInc.com only indexes and cross-references those posts.