connectivity problems wifi after update 10.8.5

After software update iMac 10.8.5 I lost wifi connection to the wireless printer and audio. Printer is Brother HL 2135W, audio B&O Beoplay 8 mk2.

I reset printer to factory settings, download latest drivers,cleared the old network settings and put in the new network settings. Connected with cable everything works perfect, but when cable is disconnected printer shows offline.

Same for the audio. Audio is recognized on computer and iPads but can't be played from these devices. Connected with cable, everything works perfect.

Whats the problem?