ok. stay calm. That's the 1st rule
I believe I can't ask you to check your about device, since you are stuck at ODIN mode already.
From what you are saying you are on latest Germany firmware, if I'm not wrong it should be ND3 Kitkat.
Did you try to root using the correct file of CF-Autoroot ? I mean did you use the correct file for the Kitkat N9005 version ?
Since now you are left with no other choice, I suggest you to download the same firmware of ND3 - DBT version again (if you still want to stick with germany firmware).
But if you want the latest one, you can try Singapore XSP NE4 (I'm not sure, but some users reported the NE4 XSP is not so good in dealing with GPS).
It's up to your choice mate. But if you are worry too much, you can just grab the ND3 - DBT (I'm not sure the germany this one still need the .PIT file or not), or any other Europe firmwares (try not to grab the provider branded firmware)
You can find this on samfirmware.com
Once you get already, you can use ODIN v.3.0.9 to flash.
Let it boot... if you stuck at the N9005 logo, power it off (or take out battery for few secs and put it back), and then press vol up + home + power to go into stock recovery, and then choose factory reset and wipe cache, and then reboot.
Btw,
Reason why you are not able to flash the firmwares you are listed above, is because you are on Germany last built (ND3) with the ND bootloader. It is not possible for you to flash earlier firmware with earlier bootloader.
Hope you understand my long explanation
feel free to PM me if you need more help.
cheers.