BIOS package for a board identified as LA58 with motherboard number 11273-1, labelled as a fully working BIOS. The 11273-1 style number follows the Wistron numbering pattern, so the board was likely made by Wistron for a brand laptop not named here. The RAR archive should be unpacked and the image size compared with the SPI flash capacity before programming. Read and keep the original chip contents first, then write the dump with a hardware programmer and verify it, confirming the board number on the PCB matches 11273-1.
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 | 8 Sept 2022 | Open file on RM Schematics |
| @Laptopbiossolutions | 20 Sept 2023 | Open file on RM Schematics |
| @Laptopbiossolutions | 20 Sept 2023 | Open file on RM Schematics |
| @L9BCM2MdAgNjNDk1 | 10 Apr 2026 | 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 →