BIOS firmware for the Lenovo B490 notebook, distributed as a 3.22 MB RAR archive. The name does not state a motherboard number, revision or firmware version, so the contents should be inspected after extraction. Such images are typically used to reprogram the SPI flash on a board that is stuck on a black screen or bricked after a failed update. Read and keep the original chip data before writing anything, match the board number on the PCB with the dump source, and confirm the image size equals the flash capacity.
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 | 20 Aug 2017 | Open file on RM Schematics |
| @jdbios_world | 2 Aug 2018 | Open file on RM Schematics |
| @CLRINDORE | 13 Mar 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 →