Homebrew hack brings NoDo update to every single WP7 smartphone
Thanks to Chris' hacking skills, a way of installing NoDo on any device running Windows Phone 7 already exists on the web and lets everybody who is brave enough to try it themselves at their own risk. In fact, his tool is said to allow flashing a device to any version of WP7, as long as it has been publicly released by Microsoft. As with all homebrew hacks, there is always the risk of bricking a device and voiding your warranty so it is highly advisable to backup your data and try the hack only if you know what you are doing.
Link to Chris' updating tool here