: Once the flashing stops, remove the USB and restart the TV.

: Format a USB drive to FAT32 and copy the .bin file to the root directory (do not put it in a folder).

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:

: Once installed, the factory service code for these boards is typically Menu + 1147 . Where to Find the Download

: Offers a thread specifically for T.R85.816 USB Firmware with links to several resolutions, including the Sony-specific 1366x768 variant.

: Community-driven sites like Lab-One Inside or professional Telegram firmware groups often host these .rar files for repair technicians. Installation via USB

: T.R85.816 (a common universal board used for TV repairs). Resolution : 1366x768 (Standard HD).