| Not everyone wants to use their PSP for homebrew and emulators, so the updates are there for those that want to be able to use it to play their new games.
For those still getting the corrupted data notice: delete that corrupted data, make sure your battery's charged past 75% and keep your adaptor plugged into your PSP. Then try updating again: it should be fine this time. Make sure you delete the corrupted data first before going through the update process again, otherwise you might end up with another corrupt file. |