Combined BIOS and EC firmware for the Dell 3300 laptop, project DW30, UMA (integrated graphics) variant, on Wistron motherboard 09902-1, packed in a 1.97 MB rar. The board number follows the pattern Wistron uses for its Dell designs. Restoring both the system BIOS and the embedded controller code can cure no-power, no-charge or keyboard faults caused by corrupt firmware. Program each image with a suitable SPI programmer, keep a backup of the original chips, and make sure the image sizes match the flash parts.
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 →