Which opatch to download for management agent on AIX 64-bit, same as database opatch?

I recently replaced my outdated version of opatch for database 11.2.0.3.7 with the most current version. This is on an AIX 64-bit operating system. A copy of opatch also exists in the home of the Oracle Management Agent (ver. 12.1.0.3.0). The agent's opatch is out of date, too, so I want to load the newest version. I am unsure about what version of patch 6880880 to download for the agent. Is the same patch file used for both the agent and the database, if they are the same release, or does the agent have its own version. If its version is different from that of the database server, what search criteria do I enter when looking for the right version of