To check the version of your PSP, go to the “Settings” menu, then select “System Settings.” The version number will be displayed on the right side of the screen under the “System Information” heading.
Knowing the version of your PSP is important for a few reasons. First, it can help you determine if your PSP is up to date with the latest firmware. Second, it can help you troubleshoot problems with your PSP. Third, it can help you find custom firmware and homebrew applications that are compatible with your PSP.