What does it mean "will not start"?
in case there is a problem during normal firmware upgrade, the following procedure helps reinstalling the firmware.
you can try it, since it is a simple procedure. since using 0000.0 is something similar to normal upgrade, it may work on your tv too, I hope
-Remove the USB flash drive firmware update from out of the USB port on the Samsung TV.
-Unplug the Samsung TV from the electrical socket. Count to ten slowly.
-Insert the USB flash drive firmware update back into the USB port on the Samsung TV.
-Plug the Samsung TV's power cord back into the electrical socket for power.
-Press and hold in the Power button on the Samsung TV for two or three seconds before releasing it.
-Wait as the firmware upgrade notification screen appears on the Samsung TV.
-Wait as the firmware upgrade resets the Samsung TV and runs for about a minute.
-Wait as the firmware upgrade finishes and turns the Samsung TV off and then on again.
-Watch the Samsung TV now that it has been reset with the firmware.
-Turn off the Samsung TV when you are done watching.
if you cannot do this with 0000.0 firmware, you can alternatively try firmware 3011.0, which is available for download @samsung.de
sorry to hear that it did not work
could you please try this way too? I have the same tv with you but ? did not have a problem using 0000.0 firmware. almost a year ago, we had a similar problem on c750 and corrected it by reinstalling the firmware like this. The firmware gets stuck. This procedure gives it a fresh restart.
Remove the USB memory drive.
Unplug power from the TV and wait ten seconds.
Re-insert the USB memory drive.
Plug power back to the TV.
Press the power button on the front of the TV.
At this point the Firmware upgrade should begin.
the final thing you may try is to unplug the power from the tv for 10-15 seconds and to check if it helps