Samsung QE75QN85BATXXH E-Manual page 262

If your TV is not connected to the network, you can update the software using a USB drive.
Select Menu
Try Now
Select Menu
Try Now
Settings
Settings
Settings Support
Support
Settings Support
No Access
Network
About This TV and check the model code and software version.
Support
About This TV
About This TV and check the model code and software version.
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