if already updating though kies, mobile odin pro wont work right since it need root permissions.
still have any alternate methods? 

It doesn't matter. Try copy it to internal SD this time

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Added on January 5, 2012, 6:26 pm
Upgrading Msian firmware to 2.3.6 with root and CWM installed :

If your phone is not rooted, you have to use ODIN on PC to flash the phone. In odin, just select the tar file as PDA - leave the rest as default. And don't worry, flashing an official stock rom will not increase the flash counter

Download the rom file from either sammobile.com or from XDA ( it is the second last item on the list )
http://forum.xda-developers.com/showthread.php?t=1424997

Once you have flash the phone successfully , use the methods as outline here to root and have CWM installed: Make sure you download the right Chainfire file matching to your phone kernel

http://forum.xda-developers.com/showthread.php?t=1329360

Download the appropriate Chainfire kernel file from here :

http://forum.xda-developers.com/showthread.php?t=1331784

Once your phone is rooted and withnCWM installed , you can now proceed to use Mobile odin to flash the 2.3.6 Msian firmware :
Launch mobile odin
Select OPEN FILE - and browse and choose the stock 2.3.6 firmware tar file
You will see a listing of all the files selected : kernel, system, data, modem etc etc
Replace the kernel file with the CWM extracted tar file ( MUST be in tar format ). DO NOT overextract the file to become zimage. The file extracted one level down should read something like this : example  CF-Root-SGN_ZS_MUL_KK1-v5.0-CWM5.tar - note the file extension is tar
Select flash firmware

TS : please post these instructions at first page. I have been repeating these several times already

Make sure ur Note in Download mode by pressing Volume Down Key + OK button, and holding both simultaneously press the Power Button.

After that proceed with flashing procedure using PC Odin.