Do use random Google Drive links. Official sources:
Updating your is a critical maintenance step that can resolve common "out-of-the-box" bugs, improve print stability, and unlock advanced features like refined high-speed printing . Whether you are sticking with official releases or exploring custom Marlin builds, this guide covers everything you need to successfully update your Terminator 3. Why Update Your Sunlu T3 Firmware? Sunlu T3 Firmware Update
The Sunlu T3 uses a simple microSD card flash method. No special software is required to push the update from a computer. sunlu 3d - Facebook Do use random Google Drive links