BIOS image for the JV50-CP platform on the Wistron-numbered 09285-1M motherboard, with the 4GD01 tag in the name, stored in a ZIP of 1.95 MB. Wistron uses five-digit numbers with a revision suffix like this for laptop boards built for brands such as Acer. Such a dump is typically written to the SPI flash with a programmer such as a CH341A to recover a board that powers on but shows no display. Back up the existing chip first and confirm that the image size fits the installed flash part.
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 .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →