Wow. Not even 24 hours since it was released and the new PSP 2.80 firmware has already been cracked. Guess that's what happens when you use the same encryption keys from the 2.70 firmware:
http://www.psp-hacks.com/2006/07/27/...pted/#comments
I guess a new version of Devhook (0.46) has already been released to run this on 1.50. Can't seem to find a full package with the new firmware to download yet though but they should be popping up any moment.
The main new feature of the 2.80 is the viewing RSS video feeds. I hear that you can now finally drop videos into the 'Video' folder on the PSP instead of having to create a special one on the root and name the files a certain way. Web browser sounds like it's been optimized too.