I did it for my p600, should be the same for you (except loosing 3g).
1 - download the image file (from samsmobile or links from this forum)
2 - make a backup of your data (for me with helium because not yet rooted)
3 - connect to a PC your tab in download mode
4 - flash image file with odin 3.09 (arround 5 minutes needed)
5 - reboot and enjoy.
you will loose sdcard write access except for myfile application (it's a kitkat behavior and not related to our tab).