Sony sneakily snuck out a new firmware upgrade for PSP: the first in almost two months. Here's the list of the improvements for this firmware revision:
Support for displaying thumbnails for items has been added under [RSS Channel].
Support for PLAYSTATION Network titles has been expanded.
The size of videos that can be played under [Video] has been increased.
Support for displaying thumbnails for content saved in the "VIDEO" folder of a Memory Stick has been added under [Video].
Update: For those without wi-fi access, the update can be downloaded here. Save it on your PSP under this directory: PSP/GAME/UPDATE. It does not appear as if full-resolution video has been fully unlocked. More details will certainly arise over the new few hours, so stay tuned.
Remember if you upgrade you lose homebrew.
via pspfanboy