Well, basically, Nokia first refused to continue developing for the 770 when the N800 came out. As a result, a group of developers set out to port ITOS 2007 to the 770, but the port was pretty half-baked. They couldn't really get that far without Nokia's help. Then, Nokia kinda took back their last statement. I'm not sure if they actually helped or not, but now this version of IT OS 2007 HE (Hacker's Edition) is much better, very usable actually. Flash actually works now and everything is much faster. Unfortunately, some components of IT OS 2007 were licensed specifically for the N800, namely the Opera rendering engine and a few audio/video codecs, so they could not be included by law. Overall, I would recommend IT OS 2007 to any 770 user. The only issue I have run into is that I cannot play the internet radio stations (you get a format not supported error). MP3's play fine, as do most videos (well, the sample ones anyway ;D). I would sacrifice that any day though for the amazing improvement you get in Flash. I downloaded The Impossible Quiz .swf and it plays pretty good, actually. Of course, you will not be hopping on youtube any time soon, unless you only care about the audio.