Following the announcement of Firmware 4.00 earlier this week, the update is now available to download. According to the Japanese changelog, the new features to the PSP System Software include a new [Internet Search] icon under [Network] and ability to change playback speed of videos stored on the Memory Card. You can update your PSP using the network update feature from the settings menu. The full changelog is included below.
Firmware 4.00 Changelog:
- [Internet Search] has been added as a feature. You can now perform an Internet search directly from the PSP Home Menu.
- [Playback Speed (+)] and [Playback Speed (-)] have been added as options to the control panel. You can now change the playback speed of video content saved on Memory Stick Duo media.