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+# APK Build & Testing Guide
+
+**Date:** February 22, 2026  
+**APK Version:** v14 (CUSTOMIZED mode - EA URLs eliminated)  
+**Build Status:** ✅ SUCCESS  
+**Signature:** ✅ VERIFIED
+
+---
+
+## 📦 APK Build Information
+
+### Built APK
+- **Filename:** `RR3-v14-NoEAURLs-signed.apk`
+- **Size:** 103.92 MB
+- **Location:** `E:\rr3\rr3-apk\RR3-v14-NoEAURLs-signed.apk`
+- **Build Date:** February 22, 2026
+
+### Configuration Changes Applied
+1. ✅ **Nimble Mode:** Changed from `"live"` to `"customized"`
+2. ✅ **EA URLs:** Eliminated from execution path
+3. ✅ **Fallback URL:** Added `http://localhost:5001` to manifest
+4. ✅ **Priority System:** SharedPreferences > Manifest > Never EA
+
+### Signature Information
+- **Keystore:** `rr3-release.keystore`
+- **Alias:** `rr3key`
+- **v2 Scheme:** ✅ Verified
+- **v3 Scheme:** ✅ Verified
+- **Valid Until:** July 6, 2053
+
+---
+
+## 🔧 Build Process
+
+### Tools Used
+1. **apktool 2.10.0** - APK decompilation/recompilation
+2. **Java OpenJDK 21.0.10** - Build environment
+3. **Android Build Tools 36.1.0** - Signing & verification
+4. **apksigner** - APK signing with v2/v3 schemes
+
+### Build Commands
+```powershell
+# Build APK
+java -jar E:\tools\apktool.jar b E:\rr3\rr3-apk -o RR3-v14-NoEAURLs-unsigned.apk
+
+# Sign APK
+apksigner sign `
+    --ks rr3-release.keystore `
+    --ks-key-alias rr3key `
+    --ks-pass pass:rr3community `
+    --key-pass pass:rr3community `
+    --out RR3-v14-NoEAURLs-signed.apk `
+    RR3-v14-NoEAURLs-unsigned.apk
+
+# Verify signature
+apksigner verify --verbose RR3-v14-NoEAURLs-signed.apk
+```
+
+### Build Output
+```
+I: Using Apktool 2.10.0 with 12 thread(s)
+I: Building resources...
+I: Smaling smali_classes2 folder into classes2.dex...
+I: Building apk file...
+I: Copying unknown files/dir...
+I: Built apk into: RR3-v14-NoEAURLs-unsigned.apk
+```
+
+---
+
+## 📱 Installation Methods
+
+### Method 1: ADB Install (Recommended)
+```bash
+# Connect device via USB with USB debugging enabled
+adb devices
+
+# Install APK
+adb install -r RR3-v14-NoEAURLs-signed.apk
+
+# Or if device already has RR3 installed
+adb install -r -d RR3-v14-NoEAURLs-signed.apk
+```
+
+### Method 2: Drag & Drop
+1. Start Android emulator
+2. Drag `RR3-v14-NoEAURLs-signed.apk` onto emulator window
+3. Wait for installation to complete
+
+### Method 3: File Transfer
+1. Copy APK to device storage
+2. Use file manager app to open APK
+3. Allow installation from unknown sources
+4. Install
+
+---
+
+## 🧪 Testing Procedure
+
+### Phase 1: Installation & First Launch
+
+**Test 1: Clean Install**
+```bash
+# Ensure no previous RR3 installation
+adb uninstall com.ea.games.r3_row
+
+# Install new APK
+adb install RR3-v14-NoEAURLs-signed.apk
+
+# Monitor logcat during launch
+adb logcat -c  # Clear log
+adb logcat | Select-String "RR3|Synergy|CommunityServer|ServerSetup"
+```
+
+**Expected Behavior:**
+1. ✅ Game launches successfully
+2. ✅ `ServerSetupActivity` appears on first launch
+3. ✅ User prompted to enter server URL
+4. ✅ No crashes or ANR (Application Not Responding)
+
+**Logcat Checkpoints:**
+```
+✅ "RR3_OfflineModeManager: Initializing OfflineModeManager"
+✅ "CommunityServerManager: Checking server URL"
+✅ "ServerSetupActivity: onCreate"
+✅ "SynergyEnvironmentImpl: 🎯 Using community server from SharedPreferences"
+```
+
+---
+
+### Phase 2: Server URL Configuration
+
+**Test 2: Server URL Input**
+1. Launch game (first time)
+2. Enter server URL: `http://localhost:5001`
+3. Click "Test Connection"
+4. Click "Continue"
+
+**Expected Behavior:**
+1. ✅ Input field accepts URL
+2. ✅ Test button attempts connection
+3. ✅ Continue button saves URL to SharedPreferences
+4. ✅ Game restarts with new URL
+
+**Verify SharedPreferences:**
+```bash
+# Check if server URL was saved
+adb shell cat /data/data/com.ea.games.r3_row/shared_prefs/rr3_community_server.xml
+```
+
+**Expected Content:**
+```xml
+<?xml version='1.0' encoding='utf-8' standalone='yes' ?>
+<map>
+    <string name="server_url">http://localhost:5001</string>
+</map>
+```
+
+---
+
+### Phase 3: Network Communication
+
+**Test 3: Director API Call**
+```bash
+# Monitor network requests
+adb logcat | Select-String "director|http|Synergy"
+```
+
+**Expected Logcat:**
+```
+✅ "SynergyEnvironmentImpl: 🎯 Using community server from SharedPreferences"
+✅ "http://localhost:5001/director/api/android/getDirectionByPackage"
+✅ No references to "eamobile.com"
+✅ No references to "syn-dir" or "director-stage"
+```
+
+**Test 4: Verify EA URLs NOT Used**
+```bash
+# Search for EA domain access attempts
+adb logcat | Select-String "eamobile.com"
+```
+
+**Expected:** 🚫 No matches (EA URLs should never appear)
+
+---
+
+### Phase 4: Configuration Verification
+
+**Test 5: Check Nimble Configuration**
+```bash
+# Extract app data
+adb shell run-as com.ea.games.r3_row cat /data/data/com.ea.games.r3_row/shared_prefs/nimble_preferences.xml
+```
+
+**Verify:**
+- ✅ Configuration mode: `CUSTOMIZED` (not `LIVE`)
+- ✅ Server URL: User-configured URL
+- ✅ No EA default URLs stored
+
+**Test 6: Clear SharedPreferences Test**
+```bash
+# Clear community server preferences
+adb shell run-as com.ea.games.r3_row rm /data/data/com.ea.games.r3_row/shared_prefs/rr3_community_server.xml
+
+# Restart game
+adb shell am force-stop com.ea.games.r3_row
+adb shell am start -n com.ea.games.r3_row/com.firemint.realracing.MainActivity
+```
+
+**Expected Behavior:**
+1. ✅ ServerSetupActivity appears again (no URL configured)
+2. ✅ Falls back to manifest URL: `http://localhost:5001`
+3. ✅ Does NOT attempt EA servers
+
+---
+
+### Phase 5: Offline Mode
+
+**Test 7: Offline Mode Toggle**
+```bash
+# Check offline mode preferences
+adb shell cat /data/data/com.ea.games.r3_row/shared_prefs/rr3_offline_settings.xml
+```
+
+**Expected Content:**
+```xml
+<?xml version='1.0' encoding='utf-8' standalone='yes' ?>
+<map>
+    <boolean name="offline_mode_enabled" value="false" />
+</map>
+```
+
+**Test:** Toggle offline mode in SettingsActivity and verify behavior.
+
+---
+
+## 🐛 Common Issues & Solutions
+
+### Issue 1: Installation Failed
+**Symptom:** `INSTALL_FAILED_UPDATE_INCOMPATIBLE`
+
+**Solution:**
+```bash
+# Uninstall existing app first
+adb uninstall com.ea.games.r3_row
+
+# Then install
+adb install RR3-v14-NoEAURLs-signed.apk
+```
+
+---
+
+### Issue 2: App Crashes on Launch
+**Check:**
+1. Logcat for crash stacktrace
+2. Missing native libraries
+3. Architecture mismatch (armeabi-v7a vs arm64-v8a)
+
+**Debug:**
+```bash
+adb logcat -s AndroidRuntime:E
+```
+
+---
+
+### Issue 3: ServerSetupActivity Not Appearing
+**Possible Causes:**
+1. SharedPreferences already exist (previous installation)
+2. MainActivity not checking properly
+
+**Fix:**
+```bash
+# Clear all app data
+adb shell pm clear com.ea.games.r3_row
+```
+
+---
+
+### Issue 4: Network Requests Failing
+**Check:**
+1. Server is running on `http://localhost:5001`
+2. Emulator/device can reach localhost
+3. Use emulator's special address: `http://10.0.2.2:5001`
+
+**Fix:**
+```bash
+# Forward port from host to device
+adb reverse tcp:5001 tcp:5001
+```
+
+---
+
+## 📊 Logcat Filters
+
+### Filter 1: RR3 Application Logs
+```bash
+adb logcat | Select-String "RR3_|CommunityServer|ServerSetup|OfflineMode"
+```
+
+### Filter 2: Network Communication
+```bash
+adb logcat | Select-String "http|Synergy|director|eamobile"
+```
+
+### Filter 3: Errors Only
+```bash
+adb logcat *:E | Select-String "com.ea.games.r3"
+```
+
+### Filter 4: Crashes
+```bash
+adb logcat -s AndroidRuntime:E
+```
+
+---
+
+## ✅ Success Criteria
+
+### Build Success ✅
+- [x] APK built without errors
+- [x] APK signed with valid certificate
+- [x] Signature verified (v2 & v3)
+- [x] APK size reasonable (103.92 MB)
+
+### Configuration Success ✅
+- [x] Nimble mode set to CUSTOMIZED
+- [x] EA URLs eliminated from execution path
+- [x] Fallback URL added to manifest
+- [x] Priority system verified in code
+
+### Installation Success (To Be Tested)
+- [ ] APK installs on device/emulator
+- [ ] No installation errors
+- [ ] Package name correct: `com.ea.games.r3_row`
+- [ ] Permissions requested appropriately
+
+### Runtime Success (To Be Tested)
+- [ ] App launches without crashes
+- [ ] ServerSetupActivity appears on first launch
+- [ ] Server URL input works
+- [ ] SharedPreferences saved correctly
+- [ ] Network requests go to community server
+- [ ] EA URLs never contacted
+
+---
+
+## 🚀 Next Steps
+
+### Immediate Testing
+1. **Get working emulator or physical device**
+   - Android 8.0+ recommended
+   - USB debugging enabled
+   - Unknown sources allowed
+
+2. **Install APK**
+   ```bash
+   adb install -r RR3-v14-NoEAURLs-signed.apk
+   ```
+
+3. **Monitor first launch**
+   ```bash
+   adb logcat -c
+   adb logcat | Select-String "RR3|Synergy"
+   ```
+
+4. **Verify URL priority**
+   - Check ServerSetupActivity appears
+   - Enter server URL
+   - Verify SharedPreferences created
+   - Confirm community server used
+
+### After Successful Test
+1. ✅ Document any issues found
+2. ✅ Commit working APK to repository
+3. ✅ Create release notes
+4. ✅ Begin Phase 2 (Events Service)
+
+---
+
+## 📝 Known Limitations
+
+1. **Emulator Issues**
+   - Android emulators on current system not starting properly
+   - Recommend physical device testing
+   - Alternative: WSA, Bluestacks, NOX, LDPlayer
+
+2. **SSL Validation**
+   - Still disabled in Http.java (ALLOW_ALL_HOSTNAME_VERIFIER)
+   - Security risk - needs fixing
+   - Accept any certificate currently
+
+3. **Localhost Access**
+   - From emulator: Use `10.0.2.2:5001` instead of `localhost:5001`
+   - Requires `adb reverse tcp:5001 tcp:5001` for port forwarding
+
+---
+
+## 🔐 Security Notes
+
+### APK Signature
+- Signed with rr3-release.keystore
+- Valid until 2053
+- SHA256 fingerprint: A9:A0:08:7B:2F:C3:7A:0D:A4:EE:FE:53:53:05:BA:AF:A1:08:FC:C1:5B:50:1F:FA:5D:EA:E2:2E:98:7D:43:C7
+
+### Network Security
+- ⚠️ SSL validation disabled (needs fix)
+- ✅ No EA server communication
+- ✅ User-controlled server selection
+- ✅ Community server prioritized
+
+---
+
+**Build Status:** ✅ SUCCESS  
+**Ready for Testing:** ✅ YES  
+**Emulator Available:** ⚠️ Issues (use physical device)  
+**Next Phase:** Testing on device + Phase 2 (Events Service)