diff --git a/Makefile b/Makefile
index 8919aba..c7e35a9 100644
--- a/Makefile
+++ b/Makefile
@@ -60,6 +60,9 @@ build:
 	cd cyberwow && \
 	flutter build apk --target-platform android-arm64
 
+install: build
+	cd cyberwow && \
+  flutter install
 
 # build wownero android binary
 
@@ -109,3 +112,9 @@ collect-wownero: wownero
 collect-wownero-fake:
 	$(script)/collect-fake.sh
 
+
+# etc
+
+remove-exif:
+	exiftool -all= `find fastlane/ -name '*.jp*g' -o -name '*.png'`
+
diff --git a/cyberwow/android/app/build.gradle b/cyberwow/android/app/build.gradle
index a7c9d75..f8723f1 100644
--- a/cyberwow/android/app/build.gradle
+++ b/cyberwow/android/app/build.gradle
@@ -36,8 +36,8 @@ android {
         applicationId "org.wownero.cyberwow"
         minSdkVersion 23
         targetSdkVersion 28
-        versionCode 21
-        versionName "0.7.0.0-h"
+        versionCode 22
+        versionName "0.7.0.0-i"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
 
diff --git a/cyberwow/lib/controller/process/run.dart b/cyberwow/lib/controller/process/run.dart
index 3a68d27..c0072bc 100644
--- a/cyberwow/lib/controller/process/run.dart
+++ b/cyberwow/lib/controller/process/run.dart
@@ -53,7 +53,6 @@ Stream<String> runBinary
   ];
   const List<String> releaseArgs =
   [
-    "--restricted-rpc"
   ];
 
   const extraArgs = kReleaseMode ? releaseArgs : debugArgs;
diff --git a/cyberwow/lib/controller/rpc/rpc.dart b/cyberwow/lib/controller/rpc/rpc.dart
index 4888e65..b1e01d9 100644
--- a/cyberwow/lib/controller/rpc/rpc.dart
+++ b/cyberwow/lib/controller/rpc/rpc.dart
@@ -69,7 +69,7 @@ Future<dynamic> rpc(final String method, {final String field}) async {
     return null;
   } else {
     final _body = await compute(jsonDecode, response.body);
-    final _result = _body['result'];
+    final _result = _body['result'] ?? const {};
     final _field = field == null ? _result : _result[field];
 
     return _field;
diff --git a/cyberwow/pubspec.yaml b/cyberwow/pubspec.yaml
index 0ab3e3a..c578543 100644
--- a/cyberwow/pubspec.yaml
+++ b/cyberwow/pubspec.yaml
@@ -12,7 +12,7 @@ description: A new Flutter project.
 # In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
 # Read more about iOS versioning at
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
-version: 0.7.0+21
+version: 0.7.0+22
 
 environment:
   sdk: ">=2.1.0 <3.0.0"
diff --git a/fastlane/metadata/android/en-US/changelogs/22.txt b/fastlane/metadata/android/en-US/changelogs/22.txt
new file mode 100644
index 0000000..bb8a2d5
--- /dev/null
+++ b/fastlane/metadata/android/en-US/changelogs/22.txt
@@ -0,0 +1,3 @@
+* Fix an RPC error caused by null result
+* Add fastlane metadata
+* Enable UI in release mode
diff --git a/fastlane/metadata/android/en-US/full_description.txt b/fastlane/metadata/android/en-US/full_description.txt
new file mode 100644
index 0000000..d3a8c54
--- /dev/null
+++ b/fastlane/metadata/android/en-US/full_description.txt
@@ -0,0 +1,8 @@
+CyberWOW is a pruned full node for Wownero.
+
+Wownero is a privacy-centric memecoin that was fairly launched on April 1, 2018
+with no pre-mine, stealth-mine or ICO. Wownero has a maximum supply of around
+184 million WOW with a slow and steady emission over 50 years. It is a fork of
+Monero, but with its own genesis block, so there is no degradation of privacy
+due to ring signatures using different participants for the same tx outputs on
+opposing forks.
diff --git a/fastlane/metadata/android/en-US/images/phoneScreenshots/1.png b/fastlane/metadata/android/en-US/images/phoneScreenshots/1.png
new file mode 100644
index 0000000..8fc5db9
Binary files /dev/null and b/fastlane/metadata/android/en-US/images/phoneScreenshots/1.png differ
diff --git a/fastlane/metadata/android/en-US/images/phoneScreenshots/2.png b/fastlane/metadata/android/en-US/images/phoneScreenshots/2.png
new file mode 100644
index 0000000..9e32e50
Binary files /dev/null and b/fastlane/metadata/android/en-US/images/phoneScreenshots/2.png differ
diff --git a/fastlane/metadata/android/en-US/images/phoneScreenshots/3.png b/fastlane/metadata/android/en-US/images/phoneScreenshots/3.png
new file mode 100644
index 0000000..2c35a05
Binary files /dev/null and b/fastlane/metadata/android/en-US/images/phoneScreenshots/3.png differ
diff --git a/fastlane/metadata/android/en-US/images/phoneScreenshots/4.png b/fastlane/metadata/android/en-US/images/phoneScreenshots/4.png
new file mode 100644
index 0000000..9b2863b
Binary files /dev/null and b/fastlane/metadata/android/en-US/images/phoneScreenshots/4.png differ
diff --git a/fastlane/metadata/android/en-US/images/phoneScreenshots/5.png b/fastlane/metadata/android/en-US/images/phoneScreenshots/5.png
new file mode 100644
index 0000000..b576745
Binary files /dev/null and b/fastlane/metadata/android/en-US/images/phoneScreenshots/5.png differ
diff --git a/fastlane/metadata/android/en-US/short_description.txt b/fastlane/metadata/android/en-US/short_description.txt
new file mode 100644
index 0000000..1672841
--- /dev/null
+++ b/fastlane/metadata/android/en-US/short_description.txt
@@ -0,0 +1 @@
+A Wownero mobile daemon
diff --git a/fastlane/metadata/android/en-US/title.txt b/fastlane/metadata/android/en-US/title.txt
new file mode 100644
index 0000000..f1d6a3f
--- /dev/null
+++ b/fastlane/metadata/android/en-US/title.txt
@@ -0,0 +1 @@
+CyberWOW