Thanks for letting me know, is there a current compatibilty list somewhere for 0.5.3? I couldn't find anything at github and the old bitbucket link just notifies of the change over to github.
Is it only the Polyphony Digital games that need the loadmodule patch?
EDIT: NVM I found it
ps2cc Rev27 from PA Rev310 was the last version before the change to udp, I'm guessing that's what meant by "NTPB comms changes" in ps2cc rev28
which was compatible with the Core_Launcherv2 from PA rev300