Tested, working BIOS for the ASUS S451, revision 2.0, stored for a 25Q64 flash chip. A 25Q64 is a 64 Mbit SPI part, equal to 8 MB, so the extracted image must match that capacity. The 3.29 MB ZIP is meant for reprogramming the chip with a CH341A or similar programmer when the laptop will not start because of bad firmware. Check the board revision first, back up the original contents before erasing, and verify the write afterwards.
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.
All sources (8)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 24 Mar 2020 | Open file on RM Schematics |
| @laptexlaptopbios | 8 Jul 2020 | Open file on RM Schematics |
| @laptexlaptopbios | 8 Jul 2020 | Open file on RM Schematics |
| @one5technology | 21 Nov 2020 | Open file on RM Schematics |
| @pepeelectronica | 23 Apr 2022 | Open file on RM Schematics |
| @skclappybios | 10 Apr 2024 | Open file on RM Schematics |
| @schematics_bios | 24 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 1 Aug 2026 | Open file on RM Schematics |
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 →