Firmware for the Lenovo AIO 310-20IAP all in one, with the board label IAPLSB and version 1.0 in the name. The IAP suffix indicates an Intel Apollo Lake based model. Packed in a 6.46 MB 7z archive, which needs 7-Zip or a compatible tool to extract. The image is suited to reflashing the SPI chip with a programmer after a failed update. Save the original chip contents first and check that the board marking and flash capacity match the file.
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 @biosfiles. Enginerys does not host this file.
How to open a .7z file
High-ratio compressed archive, often used for large BIOS collections.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →