: Ensure a Memory Stick Duo (minimum 64MB) is inserted. Option 1: Update via Internet
Since many modern routers no longer support PSP security protocols, manual updating is often more reliable. How To Update Your PSP TO 6.61 Official Firmware
: Connect your PSP to a power source or ensure the battery is charged to at least 100% to prevent a system "brick" during the process.
This is the simplest method if your PSP can still connect to modern Wi-Fi (note that the PSP only supports older 2.4GHz WPA/WEP security). Navigate to on the far left of the XMB menu. Select System Update at the top. Choose Update via Internet and select your connection.