Sony has released Firmware 3.72... Here's the info from their site... but be warned that upgrading to the new firmware will likely prevent you from running homebrew for possibly forever... (ha!):The PSP® (PlayStation®Portable) system software update may include
security patches, new or revised settings and features and other items,
which will change your current operating system. We encourage you to
check this page from time to time for software updates and to always
maintain your system to use the latest version of the system software.
An
update to the PSP® system software was made available on October 30,
2007. If you update your PSP® system, the system software will be
version 3.72.
Notices
The PSP® system software version 3.72 (with 3.70 / 3.71) update includes the following:
Notice
The
[PlayStation Spot] icon that appeared as the result of the version 3.70
system software update is for a service that is not available in this
region. This icon does not appear in version 3.71 / 3.72.
Theme Settings
You can now set a theme under [Theme Settings].
The home menu color, background and icons for XMB™ (XrossMediaBar) will change, based on the theme that is selected. > See details

Scene search
You can now search for a scene when playing a movie that is saved on Memory Stick Duo™ media.
You
can select and play the scene you want to see from a thumbnail image.
This is convenient when you want to quickly play only a specific scene.> See details

&
Viewing a slideshow while listening to music
Simultaneous playback of content under
(Music) and
(Photo) is now supported.
You can view a slideshow of your favorite photographs while listening to music. > See details
Other new or revised features in version 3.72 (with 3.70 / 3.71):
- Games
- New for 3.72: Support for PLAYSTATION
®Network titles has been expanded.
- Network
- Video
You can update your system software by any of the following methods:
- Update using a PC »
Download
the update data to a PC, and then save on Memory Stick Duo™ media.
Start the saved update data on your PSP® system to perform the update.
Select the link above for update instructions.
- Network Update »
Use the PSP® system's Network Update feature to perform the update.
Select the link above for update instructions. Refer also to the
instructions for the PSP® system.
- Update using a UMD »
Use the update data included on a UMD™ to perform the update. Select the link above for update instructions.
*As of October 30, 2007, this method is only available for updates up to version 3.71.
Customers Using PSP® System Software Version 1.52 or Earlier
When
updating PSP® system software version 1.52 or earlier, you may not be
able to perform a network update using the wireless LAN feature of the
PSP® system.
In this case, use one of the following methods to update the system software.