How to apply the upgrade utility patch

Experts, I am trying to figure out how I apply this patch I am running the upgrade from SM v9.31 PDCP3 to HP SM v9.41 P4 hybrid. smupgrade utility errors out when I try to apply the custom patch. After reading this article, I have decided to apply the patch , but unable to download the installation instructions from HP support site. Any help is greatly appreciated. Thx dev.