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README.md

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+## 📦 Firefly APK Modifier Tool
+
+### 🔧 Features
+
+This tool allows you to modify an Android APK file with the following functionalities:
+
+1. **APK Selection & Extraction (Tab 1)**
+
+   * Select your APK file.
+   * The tool will automatically extract its contents.
+   * Once extraction is complete, you can proceed to Tab 2 and Tab 3 for further modifications.
+
+2. **Modify APK Icon and App Name (Tab 2)**
+
+   * Change the APK icon.
+   * Edit the app's display name (`app_name`).
+
+3. **Change Origin Settings (Tab 3)**
+
+   * Modify the origin domain and port used by the app.
+
+4. **Repack the APK (Back to Tab 1)**
+
+   * After all modifications are done, return to **Tab 1** and click **"Compress APK"** to rebuild the APK file.
+
+---