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43L621U / 49L621U / 55L621U / 65L621U 43" / 49" / 55" / 65" 2160p 60Hz LED Google Cast™ TV
17 Choose the Wifi network you want to connect to your TV, enter the Wifi password (if necessary), then tap SETUP.
Your TV connects to the network and is ready to cast.
18 Tap BROWSE YOUR CAST APPS.
When your TV connects to Wifi, it may receive an automatic software update.
Wait for the update to finish.