BIOS dump for a Sony VAIO motherboard MBX-272, marked 1P, delivered as a 4.00 MB binary for a 32 Mbit SPI flash. The 1P suffix is not explained by the name and may indicate a variant or a single-part image. Sony uses the MBX numbering for its VAIO laptop boards, often produced by ODM partners. Check that the MBX number printed on the PCB matches, save the original chip contents first, and write the image with an external programmer, verifying it afterwards.
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 @bios_laptop. Enginerys does not host this file.
How to open a .bin file
A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →