ZIP archive holding a BIOS image labelled JV50 version 111 for an Acer laptop built on Wistron board 08252-2. The 604 KB size points to a small dump, consistent with an older platform using a compact SPI flash. Wistron uses five-digit project codes with a dash revision, and that number printed on the PCB should match before you write anything. Read and save the original chip contents with a programmer such as a CH341A first, then confirm the extracted image size equals the flash capacity.
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 →