Sorry, just to be clear ... have you already installed the Offline bundle on your hosts?
- you can download it here http://vibsdepot.hp.com/
- or use VUM to deploy them http://www.jonmunday.net/2013/03/19/update-manager-online-depot-for-hp-and-dell-extensions/
Here is an additional link;
I use the complete offline bundle + SNMP and seem to get all the relevant traps in HP-SIM.