BIOS image for the LZ57 board 10290-2, version string 48.4PA01.021, built for UMA integrated graphics and marked as working. The 10290-2 and 48.4xxxx numbering follows the Wistron pattern. The 4 MB size suits a 32 Mbit SPI chip. Technicians write such dumps with a programmer to recover a dead or corrupted BIOS. Do not use it on a discrete-graphics variant, check the board number on the PCB, and save the original chip contents first.
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 @biosfilebins. 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 →