Hey Guys,

just to inform here:

In spite of the new BL from 4.4.2 a downgrade to stock 4.1.2 is possible.
I made it over Odin with firmware from sammobile (http://www.sammobile.com/firmwares/3/?download=21003).
Flashing Tutorial here:
After auto-reboot tablet will stuck in routine and you need to enter Recovery-Mode an make fullwipe and deleting cache.

Also 2 guys from other forum in Germany gone through this way successfully. All platforms GT-N8000!

Until now me and the other two guys don't have any problems.

**NOTE** There is no fully guarantee from me that it works in each case! But I wish good luck to everyone who is just as annoyed as me from update to 4.4.2!