Default Note 2 stuck in boot screen ...pls help

Hi there,

i had CM 10.3 on my n7100 installed. After the display was broken and a repair service fixed it, they removed everything back to stock and installed the newest firmware with knox. So i tried to remove knox and root again, but after many hours of try and failure with many tutorials and forum posts im out of ideas.

The note 2 is stuck in the first boot screen. I tried to flash cwm in odin in different versions, everytime its stuck in the boot sceen. Same with stock rom.

Emergency repair in kies ends with error. The only thing i still can is to enter download mode.

Please help me.