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.
Updating GPS or infotainment systems for specific regional markets (hence "Cambodia"). 2010 fatman cambodia series 9 7z upd
Always ensure you have a backup of your current system state before applying any "upd" file from 2010, as legacy firmware can occasionally be incompatible with modern hardware interfaces. Because this is labeled as an "upd" (update),
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. 2010 fatman cambodia series 9 7z upd