Things You'll Need
Instructions
Turn on your Sony PSP and wait for the device to boot up into the PSP menu. The PSP menu is called the XMB.
Navigate to "Network Settings" and select "Infrastructure Mode" from the options. Select "New Connection" and "Scan." Select your home network from the list that appears. Enter in a password if you need one to connect.
Go back to the main PSP XMB and select "System Update." Select "Update Via the Internet" and the update will begin downloading through your PSP network connection.
Press the "X" button to install the system update and your flash player will be updated to the most up-to-date version for the PSP.