This update really screwed my N800. I had the same problem with the reoccuring loop where the status bar reached about 80% and then it restarted again. I tried doing the manual flashing but was not able to do so. The install wizard was able to download the software but not update my device. It said to check the USB cable. I have done the same process in the past many times using the same one with no problem. I tried the process again and the USB logo on the top right corner was not showing up as it should when flashing. I tried time and time again with no luck. Right now the device won't even turn on. I charged the battery again last night and it still didn't turn on this morning. I don't know what else to do.

Any comments/suggestions from anyone?

Thank you.