BIOS for the Lenovo IdeaPad L340-15IRH, labelled with firmware version BGCN29WW. The name lists no board number, so confirm compatibility from the model and the motherboard marking before use. Lenovo's WW-suffixed codes identify the BIOS build, which helps match or roll back a version. The 5.29 MB archive may hold an update package or a raw SPI image. For chip-level recovery, read and keep the original contents with a programmer, and make sure 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.
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 →