The Froyo kernel was just released last week. Give it a rest already! Some technically adept individuals can get the new OS to work on devices it wasn’t intended for. I doubt their version plays well with all Apps or has gone through stringent quality control to make sure it doesn’t crash or freeze. A hardware manufacturer as well as the cell carriers that use their products have a lot more to lose if they brick a bunch of phones with a half-cooked OS than a group of phone enthusiasts.”]
Source: https://gizmodo.com/nokia-n900-hacked-with-froyo-while-androids-are-still-5574253