Firmware archive labelled for the Chromebook CB3-111, a compact RAR of about 1.52 MB. Beyond the model, the name gives no board number, revision or firmware version, so check the contents and the dump size before flashing. Chromebook firmware usually lives on an SPI chip that can be read and rewritten with an external programmer after the write protection is handled. Always dump and keep the original image first, because it holds unique data such as the hardware ID, and compare the board markings with the source.
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 @Laptopdesktopbios. 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 →