TCL 43S450R 43" S Class 4K UHD HDR LED Smart TV with Roku TV

Quick Start Guide - Page 161

For 43S450R.

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152
12- and 6-digit codes
The USB update process uses a pair of codes to validate that you are authorized to
install an update, and to ensure you are not attempting to install an old, unsupported
version of the system software.
8. Using the TV remote, select Next to move to the next screen, and then use the
on-screen keyboard to enter the 6-digit code. When finished, select OK. The
software update begins. Do not remove the USB flash drive until the TV
restarts.
When the update finishes, the TV restarts. You can check the new version number by
navigating to Settings > System > About.
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