The K2 Five (5.1) November 2018 Cumulative Update Fix Packs contain fixes for issues reported in K2 Five (5.1) products. K2 recommends that you test these Fix Packs before you deploy to a production environment.
K2 Five (5.1) November 2018 Cumulative Update must be installed first after which the latest Fix Pack must be installed.
You can download the latest Fix Pack installer by using the links above. To install the latest Fix Pack follow the instructions in the Installation instructions.pdf included in the installer package.