Instructions
Turn your PSP on and select "Network" then "Internet Browser" from the main menu. Wait for the browser to open and load.
Press the "Triangle" button to display the browser menu. You'll see a gray bar appear on the bottom part of your Web browser.
Navigate to "Tools" and press "X." The tools menu is displayed with icon of a briefcase. A list menu will appear above the briefcase.
Select "Delete Input History" from the list menu. Press "X," and then select "Yes." This will delete your Web address history.