Samsung 70TU7172 E-Manual page 172

The firmware update begins automatically. Your TV will automatically reset when the firmware update is completed.
Do not turn off your TV while the firmware update is in progress.
After your TV turns on, select
After your TV turns on, select
Update now
Settings
Settings Support
Support
Support
About This TV
Settings Support
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About This TV and check the new firmware version.
About This TV and check the new firmware version.