You can find the required .rar files and installation guides through the following community sources:
: A step-by-step download and installation guide is available on Al Mukhtar Electronic's YouTube channel , which demonstrates how to select the correct 1920x1080 resolution file . Download R83 03C 1920x1080 General USB rar
: Download the .rar package and extract the binary firmware file (often named bin or similar) using a tool like WinRAR . You can find the required
: The Al Mukhtar Electronic Facebook page provides links for V4 and V5 software versions . Download R83 03C 1920x1080 General USB rar