Otherwise, you can use a computer or a game disc that comes with update software.If you want to use homebrew software on your PSP, you can install custom firmware.In this article I am going to walk you through the steps required to upgrade the firmware on a PSP device.Unfortunately, it’s not as easy as double-clicking an EXE file and watching the magic happen.If it powers off while it's updating, it can be a nightmare to fix it.It is important to update PSP firmware to correct bugs, add features or play new video games.You need to have a wireless internet connection in order to use this method, so if you connect your computer via a cable or telephone connection and don't use the internet on your PSP, you'll need to choose a different option.Using the PSPUsing Your Computer Using a UMDInstalling Custom Firmware Community Q&A Your PSP firmware controls your system settings, and new versions get released to add features and fix errors and security problems.
The process is not automatic and it involves some manual steps to complete the procedure. It's automatic and is the simplest way to update your PSP This document, titled "Update the firmware of your PSP," is available under the Creative Commons license.
Follow the update instructions and let it do its thing.
source Place the update file "EBOOT.pbp", inside the following folder on your PSP: PSP/GAME/UPDATE/If it's a PSP Go, place it in the system memory, not on the memory stick.
Then navigate to the PSP's game menu on the XMB menu and select update.
Make sure the PSP has about 50% battery and is connected to a power source, just to be on the safe side.