OK, I admit I did something totally stupid. I installed the 2007HE release on my 770, and then tried installing the Mozilla browser engine. It wouldn't install automatically, so I manually installed the components with the app manager. Did a reboot. Now my 770 is bricked. And by bricked, I mean it won't even start up in USB client mode (which I thought would be a failsafe to allow me to completely reset it). So, any ideas? Do I have to send it back to Nokia and beg them to fix it? Thanks!