Firmware set for the Casper Nirvana CSD notebook on a Pegatron C15B board, revision 2.0, which the name says includes both EC and BIOS images, packed in a 3.84 MB RAR. Pegatron is the ODM, and the same C15B design appears under several brands. The EC file restores the embedded controller that manages power-on, charging and the keyboard, while the BIOS image covers the main SPI flash. Identify which chip holds each part, back up both before writing, and match the image sizes to the chips.
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 →