Intel CSME Slim firmware (SLM), release 11.8.77.3664, aimed at H-series PCH with the DA stepping code. Marked PRD for production signing and EXTR, meaning it was pulled from an existing flash image rather than supplied as a clean RGN file; size is 1.00 MB. An extracted region can contain earlier configuration data, so cleaning or reconfiguring it in Intel FIT is common practice. Verify the SKU matches the original firmware and keep a backup of the SPI chip before flashing.
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 @sm_intel_repository. Enginerys does not host this file.
How to open a .bin file
A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →