I have successfully update my Samsung Galaxy Note to Version 2.3.6 using OTA. Your data will not be wiped.
- Click on Menu -> Settings -> About Phone -> Software update
- Click on Update(using Wifi)
- Software update box appear
- Click on download to get the firmware
- Click to reboot phone after download complete
- Software installation will start
- UI will be loaded after software installation complete
The Samsung Galaxy Note firmware has been updated to N7000DDXKL3.