Because of stupidness this was not really successful and my TAB didn't start after the flashing...
also pressing the power + volume down show's no effect.
the display turns on only when it's powered by the charger displaying 2 icons of a phone and a computer
I looked then through many forums and found at xda-developers patomas who had the problem.
Following solution worked:
1. wait until the TAB discharge (about 1 Day)
2. Start Odin and connect th tab to the computer
3. wait about 10 minutes, TAB connected to the computer
4. flash normal FW (I chose the XWJJ4)
Edited by lordlucan, 14 November 2010 - 08:49 PM.