BIOS archive for Sony VAIO VPCEH16EN and VPCEH35EN notebooks on board MBX-247, with the i-3 note pointing to an Intel Core i3 configuration. MBX numbers are Sony board identifiers used on VAIO models. The 1.78 MB RAR should be extracted to find the flash image and compare its size with the SPI chip. Technicians program it with an external programmer to recover a board with corrupted firmware. Check the MBX-247 marking on the PCB, and save the original contents first, since they store model and serial data.
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.
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 →