| Problem | Likely Fix |
|---------|-------------|
| App crashes on launch | Missing signature verification – patch signature check or use core patch. |
| Resources not found | Rebuild with apktool if you edited XML; don’t mix with Android Studio’s build. |
| Smali changes ignored | Ensure you recompiled with apktool b and signed correctly. |
| Android Studio shows errors | Smali is not Java – use as text editor, or convert to Java with CFR/Jadx. |
Android won’t install unsigned APKs. Use Android Studio’s APK Signer or command line: Android Studio Apk - Mod
zipalign -v -p 4 modified.apk aligned.apk
apksigner sign --ks my.keystore aligned.apk
To understand how a game verifies purchases: | Problem | Likely Fix | |---------|-------------| |
Before beginning, ensure you have the following: Android won’t install unsigned APKs