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i will be new at the ps3 hacks : dex format
but i don't have the link of the tut for block x connections etc from sony can you help me?

You will need to log onto your router and blacklist the current connections:

fus01.ps3.update.playstation.net > Update Server (sys updates)
mercury.dl.playstation.net > What's new ads
nsx.np.dl.playstation.net > playstation store preview
nsx-e.np.dl.playstation.net > ads

main file exchange connections
us.np.stun.playstation.net > on boot initiates connection
ena.net.playstation.net > SSLv3 connection after above connection
dus01.ps3.update.playstation.net > secondary update attempt (could force updates)
auth.np.ac.playstation.net > SSLv3 authentication server

destination servers
service.playstation.net (has multiple IPs if only the ip address is blocked)

Error Reporting
creepo.ww.hl.playstation.net (uploads crash reports etc.)