[Hobbesgsr]

I'm having the exact same problem.

I've performed OS updates countless times and it's always worked until now.

The preloaded OS is so buggy I can't stand it. for example:
It freezes for minutes at a time.
The back button is now the task manager button.
The touchscreen is erratic in webpages.
You can't exit apps quickly as the spinning CPU icon looks frozen.
Uninstalling even a small app takes several minutes.
The battery life is horrible