Earlier today, Sony released a firmware update – version 3.72 – for the PSP. The update is a sort of addendum to the recent 3.71 release, and offers enhanced compatibility with Playstation network titles.
The 3.70/3.71 updates added theme settings, movie scene search, music playback during slideshows, remote play button assignment, and sequential video playback.
PSP owners can download the 3.72 firmware via the "Network Update" icon on the PSP XMB, or online at Sony’s website.