Firmware image for the Lenovo ThinkPad L540, labelled for a Macronix MX25L6473E flash chip, a 64 Mbit (8 MB) SPI part, and board 12290-1M. That number follows the Wistron pattern, the ODM that built this board. The 3.45 MB ZIP should hold a dump sized for that chip, used to recover a dead or corrupted BIOS with a programmer such as a CH341A. Read and keep the original contents first, and compare the board marking on the PCB before flashing, since ThinkPad images carry serial and system data.
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 @bios_laptop. Enginerys does not host this file.
All sources (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @bios_laptop | 15 Jun 2022 | Open file on RM Schematics |
| @Satale_bios_esquemas_Laptop | 27 May 2023 | 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 →