I plan to upgrade helpdesk connector in the development system. Do I need to uninstall V126.96.36.199 first or if I can simply do the upgrade on top of V188.8.131.52?
Release : 4.2
Component : Service Operations Insight (SOI) Manager
There's no upgrade for the NIM Helpdesk, you would need to uninstall and install the new one.
Make sure you backup the \soi\tomcat\lib\resources\helpdesk.properties for reference