Samsung BE70T-H E-Manual page 182

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