My ps3 says dns error(089685)

If you keep getting this ps3 error 807101ff, then somethings definitely wrong with your online communication. To be specific, you are having what it called a DNS error. You see, the DNS settings on your network is your means of contacting and communicating with an online server. In the case of the ps3, that online server happens to be a game server. Without a correct DNS setting, your online network is "doomed", or put in another way, useless.

807101ff problem? It's really quite easy! What you can do is to try the POWER CYCLING method. To do this, turn off your ps3 and all of your networking devices like the modem and router. Remove the power cord of the router and modem as well, to be sure. You then wait for a short while, like a few minutes.

After the short wait, you can now connect back the modem and turn it on. After you get a solid light on the modem, connect back the router. The last thing you turn on is the ps3. This way, your ps3 would be able to try obtaining an IP address. Likewise, it will also try to establish a stable DNS setting. This technique works most of the time in solving the problem

Hope this helps you!

Any further questions feel free to ask.