I don't use Windows, so you may need to set up a VM running something like Ubuntu to sucessfully do the update.
The images from the google update are a 'Sparse EXT4" volume. You need to use utility called simg2img which can be found within ext4_utils.zip (attached to the following)
Download the sources, and compile them by using 'make'
Then extract the system.img from the Google Update to the folder where the simg2img binary has been compiled, and type:
#./simg2img system.img sys.img
This will create a sys.img file (around 640MB), copy this new file (aswell as the boot.img file extracted from the update) into dsixda/original_update
and run the kitchen
As a quick note, Don't run simg2img on boot.img, it's not needed!
Edited by PaulW21781, 17 December 2011 - 12:09 PM.