Okay, I don't feel so abandoned... I installed the latest OS2007HE and have to say that it works quite nicely! Very fast! Since I mostly use the N770 as a browser when traveling and as a photo album, it's exactly the kind of upgrade I needed. It's a shame that it's not officially supported, thus, making it unlikely that someone like myself, who's interested in a tool, not a tinkering box, will install it.

Unfortunately the reason why I installed it in the first place is because of a bug. I'm getting "No connections available" in my rich wi-fi access point area. One speculation is that the connection list is getting overflowed. OS2007HE and OS2006 don't work but OS2005 does. Anyway, if anyone else is afflicted with this same bug, vote for bug #2082 on Bugzilla via www.maemo.org.

Kudos to Nokia for making an effort to keep us N770 users up-to-date. I'll more likely install the unsupported updates now.