BIOS package for the Lenovo B490, whose board is labelled LA48 with motherboard number 11264-1M, in a 3.27 MB zip. The five-digit-dash style number follows the Wistron scheme, the ODM behind this board. Open the archive to check whether it holds a full SPI image and any EC or ME details, as the name does not say. The dump is used to reflash the BIOS chip with a programmer when the laptop is bricked. Match the board number on the PCB, back up the original chip and confirm the image size fits the flash.
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 Jan 2018 | Open file on RM Schematics |
| @biositechyangiyer | 19 May 2020 | Open file on RM Schematics |
| @one5technology | 10 Nov 2020 | Open file on RM Schematics |
| @biosdumpcomputer | 25 May 2022 | 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 →