The manufacturer (often generic) does not provide “portable” firmware officially. The portable versions are repackaged by the retro gaming community to simplify the process. However, they are widely tested and safer than official tools that require permanent installation.
The Game Stick Lite 4K is a popular "plug-and-play" retro console, but because there are many different hardware versions (e.g., M8, M15, V8.0), firmware downloads are not universal and installing the wrong one can "brick" the device. The operating system (OS) lives entirely on the microSD card; without it, the stick will not boot. game stick lite 4k firmware download portable
Share it with the retro community on Reddit (r/SBCGaming) to help the next person searching for that elusive download. game stick lite 4k firmware download portable