PS3 being identified as PS4 (help)

I noted last week that my PS3 plex client is being detected incorrectly (Mystery 3 is showing in the log files) and my Plex Server is configuring the connection as if it is a PS4… Is it as simple as editing the XML client configuration files for the client detection to point to the PS3 config vs the PS4 config???

Thanks in advance,
Charles