If possible, backup your original SPI Flash data using a programmer before updating via USB. If you'd like, let me know: What is your panel resolution (e.g., 1366x768)? Are you fixing a stuck logo or a dead board ? Do you need the logo change or mirror mode steps?
Installing the wrong resolution firmware can result in a distorted image or "Black Screen." Download VST59 PB753 Mix Software part3 rar
The "Part 3" rar typically contains a collection (Mix Software) of various panel resolutions for this board. You can find official archives and community uploads here: If possible, backup your original SPI Flash data