Plug the TV back in. Some models require holding the button on the TV while plugging it in to trigger the "USB Upgrade" mode.
Format a USB flash drive to FAT32 and copy the .bin file to the root directory (not inside a folder). Flash the TV: Unplug the TV from power. Insert the USB drive.
This firmware is tailored for a specific hardware configuration: TP.SK506S.PB802 Resolution: 1366x768 (standard HD Ready).