This is not an official Sony product, so it will not be found on the official Sony Support site . Instead, it is hosted on various technician forums and specialized firmware repositories:
: Insert the USB into the TV's USB port while it is off. Turn the power on; the indicator light should flash rapidly, signifying the update is in progress. Download R85 816 1366X768 USB Sony rar
: Unzip the .rar file to get the .bin firmware file. This is not an official Sony product, so
: Format a USB drive to FAT32 and copy the .bin file to the root directory (do not put it in a folder). the indicator light should flash rapidly
: Offers a thread specifically for T.R85.816 USB Firmware with links to several resolutions, including the Sony-specific 1366x768 variant.
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