.SFO File Extension
File Type 1PSP Game Parameters File
What is an SFO file?
Contains information about a Playstation Portable (PSP) game, such as the category, disc version, parental level, region code, titles, and updater version; usually stored within a .PBP file
File Type 2CuteFTP Search File
.SFO File Association 2
Stores search settings used by CuteFTP, a popular FTP program for Windows and Mac OS X; often named "CuteSearch.sfo"