The official LPY Ice Cream Sandwich update has arrived on the Samsung Galaxy Note and it's really worth upgrading, because it looks and feels much better than the old Gingerbread. But if you update it through OTA, Kies or PC Odin you will lose root, so you have to root it again. While if you update using Mobile Odin, your Galaxy Note N7000 will still be rooted, but without ClockworkMod Recovery.
Root and flash ClockworkMod Recovery on Galaxy Note N7000 with PC Odin
You will be able to root your Samsung Galaxy Note using Odin, thanks to ChainFire's new CF-Root LPY repack. To do this you will need Odin 1.85 ( download ) and the LPY CF-Root ( download ). Then make sure that you have USB debugging enabled in developer options and that you have the latest drivers installed on your computer. If you do not have them, install the latest Kies version. You will also need at least 50% battery life.
After you download the files and make sure that everything is all right, disconnect your Galaxy Note from the computer and reboot in download mode ( press volume down + home + power buttons simultaneously ). Now launch Odin, click on PDA and select the LPY CF-Root. Then connect your device to the computer and you should see a yellow box "ID:COM". If you do, then press start and wait for the update to finish. When your phone boots you will now be running on the rooted LPY official ICS ROM with CWM included.
Flash CF-Root and CWM on Galaxy Note with Mobile Odin
If you flashed the official LPY ROM using Mobile Odin, then your phone is already rooted, so you can still use Mobile Odin. If it's not installed anymore, then download it here. Extract the downloaded file and copy it to your device. Launch Mobile Odin, tap "Open File" and select "CF-Root-SGN_XX_OXA_LPY-v5.3-CWM5.tar". Now press flash and it will be done in just a few minutes. You will now have both root access and CWM installed on your Samsung Galaxy Note N7000.