You can upgrade the Sun Management Center 3.0 agent to the Sun Management Center 3.6 agent using either of the following methods.
Create an agent-only installation image on the Sun Management Center server as described in To Create an Agent-Only Installation Image Using es-makeagent. When you have created the agent-only installation image, apply the image to the agent hosts using the es-inst -a command as described in To Install Agents From an Agent-Only Installation Image Using es-inst -a.
Create an agent-update image using either es-gui-imagetool as described in To Create an Agent-Update Image Using es-gui-imagetool, or by using es-imagetool as described in To Create an Agent-Update Image Using es-imagetool. When you have created the agent-update image, apply the image to the agent hosts using the agent-update.bin executable file as described in To Install or Update Agents From an Agent-Update Image Using agent-update.bin.