BIOS image for board 18836-1 under platform name A1_WL, with Wistron part number 448.0HE03.0011. The 18836-1 number and 448. code both follow the Wistron format, and this board is also used in Xiaomi notebooks. The 9.6 MB RAR should be unpacked and the image checked against the flash capacity before programming. Technicians use it to revive laptops that stay dark after a failed BIOS update. Back up the original chip, then write it with an SPI programmer.
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 (3)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 21 Oct 2023 | Open file on RM Schematics |
| @generalbios | 21 Oct 2023 | Open file on RM Schematics |
| @generalbios | 26 Oct 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 →