Hi Bauner,
I flashed kernel 20150909 and wifi problem is gone. Now i can reset and the wifi password is still saved so im good now. I have to say thought that the kernel version i had installed before was the one indicated in the instructions number 5 which is CM12_Beta3. Is that the one we are supposed to flash with the kitkat rom ?
If you have already an samsung 4.1.x running you can skip step 1
1.flash N7000ZSLR1_N7000OZSLR1_BRI (or any other other 4.1.2) stock rom using odin
2.Copy Rom + Google Apps to your sdcard.
3.flash PhilZ-cwm6-XXLT6-XSA-5.06.1.tar.md5 (
http://d-h.st/OTu) to get cwm recovery by using odin or mobile odin (To download click the blue Download now button)
4. boot into recovery
5. flash this kernel
https://www.androidfilehost.com/?fid=95887005526788121 to get an updated cwm recovery
(this step will make your old rom unbootable stuck in the n7000 screen but you can boot into recovery with press and hold "home" and "volume+" buttons and power on your phone)
6. you need to reboot! your device now to recovery
7. you are now in the updated recovery and you can now install the rom and gapps and do a factory reset
8. Reboot