Sony has released the updated PSP firmware 4.00, which adds Google search feature, allowing users to use the Google search engine straight from the XMB (XrossMediaBar), aiming to replicate the Google Internet search experience.

Furthermore, another new feature of the latest Sony PSP firmware Version 4.00 is the ability to speed up and slow down playback of video files that stored on your Memory Stick PRO Duo.

Sony PSP System Update page is accessible here (for USA), here (for Asia English), here (for Australia), here (for New Zealand) or here (for United Kingdom)