
Remember if you have a Jap PSP you can not flash it with a USA firmware
From the official 2.0 update release notes:
Network
+ An internet browser has been added
Video
+ 4:3 screen mode has been added (for video saved on Memory Stick Duo media).
+ Go To feature has been added (for UMD Video and UMD Music).
+ A-B Repeat feature has been added (for UMD Video, UMD Music and video saved on Memory Stick Duo media).
+ Audio options have been added (for video saved on Memory Stick Duo media).
+ MP4 (AVC) has been added as a playable file format (for video saved on Memory Stick Duo media).
Music
+ The combination of SonicStage version 3.2 (or later) and PSP system software 2.0 (or later) has made it possible for music files in ATRAC3 plus format to be transferred to a Memory Stock PRO Duo.
+ MP4 (the audio codec for MP4 format audio files is MPEG-4 AAC) and WAV (Linear PCM) have been added as playable file formats (for music saved on Memory Stick Duo media).
Photo
+ Wallpaper feature has been added.
+ Image transfer feature has been added.
+ TIFF, GIF, PNG and BMP have been added as viewable file formats.
Settings
+ Korean has been added as a system language in [System Settings].
+ [Character Set] has been added in [System Settings].
+ [Theme Settings] has been added.
+ [Internet Browser Start Control] has been added as a security mode in [Security Settings].
+ WPA-PSK (TKIP) has been added as a security mode in [Network Settings].
+ Web address shortcut feature has been added as an input mode for the on-screen keyboard.
Just remember this will stop you having the ability to play homebrew and emulators on your PSP, so we wont be linking to downloads for it