Firmware archive named only ZAB, a 3.93 MB 7z file with no model, board number or revision stated. ZAB matches a Quanta project code also used in Acer notebooks, but the name alone does not confirm which board or version it suits, so check the contents before use. Extract it with 7-Zip and look at the image size and any embedded strings to see what it holds. Always read and save the original SPI chip before programming, and only write it if the board and chip capacity match.
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 @efibios. Enginerys does not host this file.
How to open a .7z file
High-ratio compressed archive, often used for large BIOS collections.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →