: Ensure your USB drive is formatted to FAT32 .
To update your using a specific firmware file like RD853V AP@asad.rar , follow these steps to prepare the file and install it manually via USB. 1. Prepare the Firmware File
Go to > Device Preferences > About > System Update .
: Keep holding the button until you see the front LED light begin to blink or an "Upgrading" progress bar appears on the screen.
: Copy the extracted .bin or .img file directly to the root directory of the USB drive (not inside any folders). It should ideally be the only file on the drive. 2. Install via USB (Manual Method)
: Plug the USB drive into the USB port on the back or side of the TV.
: While still holding the Power button, plug the TV back into the outlet.