Zipped BIOS dump for the 330s-15AST laptop with motherboard 330s_ast_mb_v10, 4.03 MB, which suggests a 4 MB SPI flash image. Repair shops reflash images like this onto the BIOS chip with an external programmer when a board shows power but no display. Confirm that the board marking reads 330S_AST_MB_V10 before writing. Keep a backup of the original contents, since they can hold unique identifiers, and verify the write after programming.
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 @vinafix_bios. 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 →