These are likely project codenames. Developers often use geographic locations (Cambodia) or whimsical names (Fatman) to identify specific branches of a software build without revealing the product's final name.
Occasionally, "Fatman" refers to specific hardware exploits or specialized ROM sets curated for older consoles. How to Open and Use the File 2010 fatman cambodia series 9 7z upd
Because this is labeled as an "upd" (update), look for a readme.txt or install.nfo inside the archive. These files contain the instructions necessary to apply the patch. These are likely project codenames
Refers to the versioning tier. This could be related to a specific line of hardware controllers, media players, or industrial software. or industrial software.