Working BIOS and EC firmware for the CIZS1 platform, board LA-E291P revision 1A dated 2016-12-14, archived as a 24.5 MB RAR. LA-xxxxP numbers follow the Compal ODM scheme. Having both the system BIOS and embedded controller firmware helps when a board fails to power on or charge due to corrupted code. Identify which file belongs to which chip by size, back up every original before programming, and confirm the PCB number and revision match yours.
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 →