Well what do you know, only hours after the first PSP Slim and Lite custom firmware was unleashed, Sony has released firmware 3.70 for the PSP. It seems to include quite a number of interesting features, such as custom themes.
* You can now set custom themes in Theme Settings.
* Support has been added for assigning buttons in Remote Play
* A scene search feature has been added under video
* Sequential playback is now supported under video
* Simultaneous playback of content under Music and Photo is now supported