Originally Posted by shidoshi
Okay, let's say this nice, clear, and slow:
Future games, depending on the game, may come with a firmware update on the actual UMD that the game is on.
When you put it into your PSP, it will tell you that the game cannot be played without updating the firmware. From there, you can decide to update the firmware either via the firmware update on that UMD, or via the "old" way, or you can decide not to update your firmware and not play the game.
In order to update the firmware, you PSP much be plugged into the wall, so there will be no problem of the battery dying while doing so.