Known-good BIOS binary for a Lenovo Chromebook on board BM5899, version 1.2, 16 MB, without the ME cleaning applied to its companion image. It is useful as a reference dump or for a straight reflash when the original was corrupted. Write it to the SPI flash with a programmer after confirming the chip is 128 Mbit. Read and keep the existing contents first, because device identifiers and hardware data may need to be preserved.
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_laptopomi. Enginerys does not host this file.
How to open a .bin file
A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →