BIOS dump for the Lenovo B490 on board 11264-1, marked in the name as tested and working, in a rar of about 3.6 MB. The 11264-1 style number follows Wistron's board numbering, and Wistron builds many Lenovo budget models. Write the dump to the SPI flash with an external programmer to restore a board that will not post or has damaged firmware. Save the original chip contents first, confirm that the board number printed on the PCB matches, and make sure the image size equals the flash chip 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 @dtechbios. 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 | |
|---|---|---|
| @dtechbios | 17 Feb 2026 | Open file on RM Schematics |
| @zinfoservicebios | 17 Feb 2026 | Open file on RM Schematics |
| @jdbios_world | 17 Feb 2026 | Open file on RM Schematics |
| @L9BCM2MdAgNjNDk1 | 17 Feb 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 →