BIOS for the model PHN16-71-50CX, which points to an Acer Predator Helios Neo 16 unit, on Quanta board DAZGRMB2AC0 revision C. The name states a 32 MB image, so the target flash chip must be 256 Mbit. DA-prefixed codes follow Quanta numbering, and the revision letter sits near the end. The 24.3 MB RAR is used to reprogram the SPI chip with a programmer after corruption or a failed update. Dump the original chip first, and check board revision and image size before writing.
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 .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →