Sorry for my late response.
No, I didn't do an OTA and there is no line with errors.
Yes, I tried it all but sadly that didn't work but I have good news, pfff. After hours and hours trying this and that and so one I finally booked some success. What I did was flashing cm 6.04
Finaly it was possible to get in the menu [power-vol up -menu] and was able to flash a rom. I flashed a original rom after that wit odin but still there are some lines wich are left behind and where stuffed by Kingoapp. I have tried to clear those lines but I failed. (They are not the red lines you see after a root. It a green line this time haha)
But one thing is for sure, the Mega 6.3 is working again although I get the impression it is a little bit slower then before.
I mailed Kingoapp last monday with the same question and yes you guessed it right: now answer....
Thanks for your help, I really apreciated it!!!
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