There is loads of things happen with PSN. If you want to appear offline on PSN then follow the following steps:
- Go on FTP server on your PS3 and filezilla on PC, have them both connected.
- Go to devhhdd0/home/(profile that you want to appear offline on)/friendIM
- Replace your "mecomment.dat" with Multiupload (a different mecomment.dat which causes you to appear offline)
- Close out of FTP server and enjoy appearing offline.
That's it. Now you appear offline on PSN.