Just added the 4gig hard drive to my psp along with the x2 battery pack....it's awesome to have that much storage onboard....plus the battery has gone almost three days with 2 movies and several hours of gaming and there hasn't been much depleted still about 2/3 charged.....

But one issue i'm having is being able to download movies from my pc to the 4gig hd....keep getting data corrupted messages and card full messages....neither are the case....anyone out there that can help me out.....

By the way, I am upgraded to 2.6....it's awesome, and I can still download to my memory stick with 2.6, so I don't think that's it.

Thanks

OH & PS....you can take apart the 4gig hd and use the pins with compact flash which is cheaper than produo sticks.