Unofrtunatly there is no way to save the patch if it has been installed by the Auto Updater. When you reinstall you will be installing the build that is on your disk (could be 1.59 or something like that)
Then you will need to run the updater to get the patch again.
You can download the patch manually ( thats what I do)
You can manually download the patch from
here
Hope this helps