Mine flashed OK. There is an upgraded flasher tool too, and if you didn't install it that might have been the problem.

While on the OS upgrade subject: now that I've lost all the apps I'd installed, it occurs to ask whether there is any way for Nokia to install the upgrade without nuking your apps?

I think this time I'll try making a shell script that I can manually insert all the installs and tweaks I make and then just run that after the next OS install. Linux people: is there a better way?