Yea, I just looked at the latest Warhawk 1.50 news, and they mentioned the http://ps3news.com/subdomain.php?pagename=psn site. So I gave it a go with 2.42, with no luck. I could get stuff downloaded, but just could not get it installed.
so I tried what was posted in post #4 and #8 because I have the 2.42 version of firmware. I was able to download the demo from PC to PS3 using PS3proxy, however, I was unable to install the demo that I downloaded and I got an error number that starts with 8.
also, to make this work, I had to choose a demo from psn that is bigger than the one that I actually wanted to install.
the Ps3proxy still works with the 2.42 but unfortunately it is useless. I really hope someone can come up with a solution to the 8---- error.