Install the APK file but do not launch the game yet.
The “Download Failed” error appears immediately after the Gameloft splash screen. This is the game screaming: “I cannot find my OBB file.”
Copy your OBB file (should be around 200–400 MB) into that folder. Rename it if needed to exactly:
Create a subfolder named com.gameloft.android.ANMP.GloftZIVL (or the specific package name found in your APK) inside the obb folder and paste your .obb file there. 2. Fixing the Black Screen Error