Updating psp via usb
Sony offers three different ways to update your PSP's firmware, so you can choose the one that works best for your internet connection and equipment.Because there are three different ways to update, the first step is to choose which one you'll use.Many new game releases will also require you to have a certain firmware version to play on your system.Fortunately, updating your PSP's firmware is not difficult, though it can be a little confusing at first.
The key is to get the update data onto our PSP's memory stick (or PSPgo's onboard memory) in the correct folder.
Keep in mind, however, that if your want to run homebrew programming, updating your firmware might not be the best choice.
If you just want to run official software and games, though, updating is the best choice.
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.
If you do have wireless access on your PSP, follow the steps below: Obviously, you can't use this method on a PSPgo, and it isn't the best choice if you want the most up-to-date firmware, as even the most recent games will only include the newest version they require to run, and not the newest version released.