Working BIOS for a board marked A1S with number 19723-1, described in the name as fully functional. The 19723-x number style follows the Wistron ODM scheme, used on Acer and other brand notebooks. The 5.83 MB RAR holds an image to reflash the SPI chip using an external programmer when the laptop fails to post or shows a corrupt firmware. Read and keep a backup of the original chip, make sure the board number on the PCB is 19723-1, and confirm the image size matches the chip.
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 (4)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 25 Oct 2023 | Open file on RM Schematics |
| @generalbios | 26 Oct 2023 | Open file on RM Schematics |
| @generalbios | 28 Oct 2023 | Open file on RM Schematics |
| @generalbios | 3 Dec 2023 | Open file on RM Schematics |
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 →