Firmware for an ETONE ET866 device with the E213441 marking, version V1.02, apparently a read of the top chip, packed as a 2.71 MB RAR. The name gives few further details, so the exact device type and flash chip should be confirmed against the hardware. Dumps like this are written with a programmer to restore a unit with corrupted firmware. Read and save the original chip before writing, check that the board markings match, and make sure the image size equals the chip capacity.
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 →