Firmware dump for the Lenovo M92Z all-in-one, labelled with the IQ77SN board code and packed into a 5.93 MB RAR. The Q77 portion of the code suggests an Intel Q77 based Lenovo board, following the usual naming pattern. Such an image is written to the SPI flash with a programmer when the system stays dark or loops after a corrupted update. Make sure the board label reads IQ77SN, dump the original chip before erasing it, and check that the file size matches 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 @afsbiosfree. 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 →