A major repository for various Game Stick firmware backups, including the SEGAM_066_EM-V1.00 Release V2 64GB GitHub (SEGAM M8):

Below is a concise, professional guide to finding, verifying, and installing firmware for a “Game Stick Lite 4K” style device (Chinese TV-stick game consoles). It covers where firmware is commonly hosted, safety and verification steps, and an actionable flashing procedure.

The Game Stick Lite 4K is a miniature gaming console that allows users to play a wide range of games on their TV. It is a compact device that measures just a few inches in size and can be easily connected to a TV via HDMI. The device comes with a built-in library of games, including classic arcade games, puzzle games, and action games.