You usually have to hold the power button while plugging in the TV to force it to read the USB.
It can save a TV from the landfill for the cost of a few megabytes of data. Download S512 PB83 1366x768 USB Firmware rar
Downloading isn't exactly like downloading the latest blockbuster game; it’s more like performing open-heart surgery on a budget LED TV. This specific file is designed for the TP.S512.PB83 universal motherboard. You usually have to hold the power button
It's a literal lifesaver for dead tech, but the sketchy download sources and the high risk of permanent failure make it a "last resort" tool for experienced DIYers. This specific file is designed for the TP
These files are often hosted on ad-heavy mirrors. Use a reliable ad-blocker and scan the extracted .bin file before use. Installation Difficulty: "Proceed with Caution"
Here is a review of what you are actually getting into when you go hunting for this .rar file. The Purpose: The "Zombie" TV Reviver