Go to your Android device settings and allow installations from "Unknown Sources."
If you encounter a "Fatal Error," you may need to adjust your compatibility settings to run the program as an administrator or in a different Windows mode. How To Fix Roblox Executor Fatal Error on Windows
Since Hydrogen is a third-party modification, it is not available on the Google Play Store. You must download the APK from the official developer site or a trusted community portal like HydroExecutor .
Using an executor is a direct violation of Roblox’s Terms of Service . Roblox uses "Byfron" (Hyperion) anti-cheat technology to detect and permanently ban accounts using third-party software.
Open the downloaded file and complete the installation process.