What is .PUP file extension?
File or patch used to update the PlayStation 3 (PS3) system software; may include security patches, bug fixes, and extra operating system features; typically named "PS3UPDAT.PUP."
To update the PS3, go to the Settings menu and select "System Update." You may download the update file from the Internet or from connected storage media, such as a hard disk or Memory Stick. When the PUP file transferred to the PS3, it should be saved in the /PS3/UPDATE folder.
To extract the contents of a PUP file in Windows, use the PS3 PUP Extractor program.
You can see a list of software programs here on easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.