fandt det her:
I did a bit of searching and all of the sites I go to say the same thing for that error code:-8071053D - Hard boot the PS3, turn off the PS3 to stand-by, flip off the back swtich and remove the power cord. Then shut off your modem/router, for about 5 mintues, then turn the modem back up first and let it sync, then turn the router back on(if using one) and let it sync. Reconnect your power cable and flip the back swtich up again. Then make a new network connnection.None of the sites say why you need to do this though. So I suggest giving it a go, if it doesn't help give Sony a call and ask them what you need to