diff --git a/eul.xcodeproj/project.pbxproj b/eul.xcodeproj/project.pbxproj
index 0eb405b6..9c3b6588 100644
--- a/eul.xcodeproj/project.pbxproj
+++ b/eul.xcodeproj/project.pbxproj
@@ -1522,7 +1522,7 @@
 				CODE_SIGN_ENTITLEMENTS = MemoryWidget/MemoryWidget.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 26;
+				CURRENT_PROJECT_VERSION = 27;
 				DEVELOPMENT_TEAM = M8G2RFZVFV;
 				ENABLE_HARDENED_RUNTIME = YES;
 				INFOPLIST_FILE = MemoryWidget/Info.plist;
@@ -1532,7 +1532,7 @@
 					"@executable_path/../../../../Frameworks",
 				);
 				MACOSX_DEPLOYMENT_TARGET = 11.0;
-				MARKETING_VERSION = 1.4.7;
+				MARKETING_VERSION = 1.4.8;
 				PRODUCT_BUNDLE_IDENTIFIER = com.gaosun.eul.MemoryWidget;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
@@ -1548,7 +1548,7 @@
 				CODE_SIGN_ENTITLEMENTS = MemoryWidget/MemoryWidget.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 26;
+				CURRENT_PROJECT_VERSION = 27;
 				DEVELOPMENT_TEAM = M8G2RFZVFV;
 				ENABLE_HARDENED_RUNTIME = YES;
 				INFOPLIST_FILE = MemoryWidget/Info.plist;
@@ -1558,7 +1558,7 @@
 					"@executable_path/../../../../Frameworks",
 				);
 				MACOSX_DEPLOYMENT_TARGET = 11.0;
-				MARKETING_VERSION = 1.4.7;
+				MARKETING_VERSION = 1.4.8;
 				PRODUCT_BUNDLE_IDENTIFIER = com.gaosun.eul.MemoryWidget;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
@@ -1574,7 +1574,7 @@
 				CODE_SIGN_ENTITLEMENTS = NetworkWidget/NetworkWidget.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 26;
+				CURRENT_PROJECT_VERSION = 27;
 				DEVELOPMENT_TEAM = M8G2RFZVFV;
 				ENABLE_HARDENED_RUNTIME = YES;
 				INFOPLIST_FILE = NetworkWidget/Info.plist;
@@ -1584,7 +1584,7 @@
 					"@executable_path/../../../../Frameworks",
 				);
 				MACOSX_DEPLOYMENT_TARGET = 11.0;
-				MARKETING_VERSION = 1.4.7;
+				MARKETING_VERSION = 1.4.8;
 				PRODUCT_BUNDLE_IDENTIFIER = com.gaosun.eul.NetworkWidget;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
@@ -1600,7 +1600,7 @@
 				CODE_SIGN_ENTITLEMENTS = NetworkWidget/NetworkWidget.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 26;
+				CURRENT_PROJECT_VERSION = 27;
 				DEVELOPMENT_TEAM = M8G2RFZVFV;
 				ENABLE_HARDENED_RUNTIME = YES;
 				INFOPLIST_FILE = NetworkWidget/Info.plist;
@@ -1610,7 +1610,7 @@
 					"@executable_path/../../../../Frameworks",
 				);
 				MACOSX_DEPLOYMENT_TARGET = 11.0;
-				MARKETING_VERSION = 1.4.7;
+				MARKETING_VERSION = 1.4.8;
 				PRODUCT_BUNDLE_IDENTIFIER = com.gaosun.eul.NetworkWidget;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
@@ -1745,7 +1745,7 @@
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				CURRENT_PROJECT_VERSION = 26;
+				CURRENT_PROJECT_VERSION = 27;
 				DEVELOPMENT_ASSET_PATHS = "";
 				DEVELOPMENT_TEAM = M8G2RFZVFV;
 				ENABLE_HARDENED_RUNTIME = YES;
@@ -1757,7 +1757,7 @@
 					"@executable_path/../Frameworks",
 				);
 				MACOSX_DEPLOYMENT_TARGET = 10.15;
-				MARKETING_VERSION = 1.4.7;
+				MARKETING_VERSION = 1.4.8;
 				PRODUCT_BUNDLE_IDENTIFIER = com.gaosun.eul;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "";
@@ -1776,7 +1776,7 @@
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				CURRENT_PROJECT_VERSION = 26;
+				CURRENT_PROJECT_VERSION = 27;
 				DEVELOPMENT_ASSET_PATHS = "";
 				DEVELOPMENT_TEAM = M8G2RFZVFV;
 				ENABLE_HARDENED_RUNTIME = YES;
@@ -1788,7 +1788,7 @@
 					"@executable_path/../Frameworks",
 				);
 				MACOSX_DEPLOYMENT_TARGET = 10.15;
-				MARKETING_VERSION = 1.4.7;
+				MARKETING_VERSION = 1.4.8;
 				PRODUCT_BUNDLE_IDENTIFIER = com.gaosun.eul;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "";
@@ -1804,7 +1804,7 @@
 				CODE_SIGN_ENTITLEMENTS = BatteryWidget/BatteryWidget.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 26;
+				CURRENT_PROJECT_VERSION = 27;
 				DEVELOPMENT_TEAM = M8G2RFZVFV;
 				ENABLE_HARDENED_RUNTIME = YES;
 				INFOPLIST_FILE = BatteryWidget/Info.plist;
@@ -1814,7 +1814,7 @@
 					"@executable_path/../../../../Frameworks",
 				);
 				MACOSX_DEPLOYMENT_TARGET = 11.0;
-				MARKETING_VERSION = 1.4.7;
+				MARKETING_VERSION = 1.4.8;
 				PRODUCT_BUNDLE_IDENTIFIER = com.gaosun.eul.BatteryWidget;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
@@ -1830,7 +1830,7 @@
 				CODE_SIGN_ENTITLEMENTS = BatteryWidget/BatteryWidget.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 26;
+				CURRENT_PROJECT_VERSION = 27;
 				DEVELOPMENT_TEAM = M8G2RFZVFV;
 				ENABLE_HARDENED_RUNTIME = YES;
 				INFOPLIST_FILE = BatteryWidget/Info.plist;
@@ -1840,7 +1840,7 @@
 					"@executable_path/../../../../Frameworks",
 				);
 				MACOSX_DEPLOYMENT_TARGET = 11.0;
-				MARKETING_VERSION = 1.4.7;
+				MARKETING_VERSION = 1.4.8;
 				PRODUCT_BUNDLE_IDENTIFIER = com.gaosun.eul.BatteryWidget;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
@@ -1856,7 +1856,7 @@
 				CODE_SIGN_ENTITLEMENTS = CpuWidget/CpuWidget.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 26;
+				CURRENT_PROJECT_VERSION = 27;
 				DEVELOPMENT_TEAM = M8G2RFZVFV;
 				ENABLE_HARDENED_RUNTIME = YES;
 				INFOPLIST_FILE = CpuWidget/Info.plist;
@@ -1866,7 +1866,7 @@
 					"@executable_path/../../../../Frameworks",
 				);
 				MACOSX_DEPLOYMENT_TARGET = 11.0;
-				MARKETING_VERSION = 1.4.7;
+				MARKETING_VERSION = 1.4.8;
 				PRODUCT_BUNDLE_IDENTIFIER = com.gaosun.eul.CpuWidget;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
@@ -1882,7 +1882,7 @@
 				CODE_SIGN_ENTITLEMENTS = CpuWidget/CpuWidget.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 26;
+				CURRENT_PROJECT_VERSION = 27;
 				DEVELOPMENT_TEAM = M8G2RFZVFV;
 				ENABLE_HARDENED_RUNTIME = YES;
 				INFOPLIST_FILE = CpuWidget/Info.plist;
@@ -1892,7 +1892,7 @@
 					"@executable_path/../../../../Frameworks",
 				);
 				MACOSX_DEPLOYMENT_TARGET = 11.0;
-				MARKETING_VERSION = 1.4.7;
+				MARKETING_VERSION = 1.4.8;
 				PRODUCT_BUNDLE_IDENTIFIER = com.gaosun.eul.CpuWidget;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
diff --git a/eul/Schema/FanData.swift b/eul/Schema/FanData.swift
index 8ba8de88..55bf46c8 100644
--- a/eul/Schema/FanData.swift
+++ b/eul/Schema/FanData.swift
@@ -10,20 +10,27 @@ import Foundation
 import SharedLibrary
 import SwiftyJSON
 
-class FanData: Identifiable {
-    let fan: Fan
-    var speed: Int
+struct FanData: Identifiable {
+    let id: Int
+    var currentSpeed: Int?
+    var minSpeed: Int?
+    var maxSpeed: Int?
 
-    var id: Int {
-        fan.id
+    var currentSpeedString: String {
+        currentSpeed.map {
+            "\($0) rpm"
+        } ?? "N/A"
     }
 
-    var percentage: Double {
-        Double(speed) / Double(fan.maxSpeed) * 100
+    var minSpeedString: String {
+        minSpeed.map {
+            "\($0) rpm"
+        } ?? "N/A"
     }
 
-    init(fan: Fan, speed: Int = 0) {
-        self.fan = fan
-        self.speed = speed
+    var maxSpeedString: String {
+        maxSpeed.map {
+            "\($0) rpm"
+        } ?? "N/A"
     }
 }
diff --git a/eul/StatusBar/StatusBarItem.swift b/eul/StatusBar/StatusBarItem.swift
index d941fd2b..9a52d07d 100644
--- a/eul/StatusBar/StatusBarItem.swift
+++ b/eul/StatusBar/StatusBarItem.swift
@@ -91,13 +91,14 @@ class StatusBarItem: NSObject, NSMenuDelegate {
         }
     }
 
-    override init() {
+    init(named: String = "eul") {
         config = getStatusBarConfig()
         statusBarMenu = NSMenu()
         item = NSStatusBar.system.statusItem(withLength: 0)
         super.init()
 
         statusBarMenu.delegate = self
+        item.autosaveName = named
         item.isVisible = false
 
         if let menuBuilder = config.menuBuilder {
diff --git a/eul/Utilities/SmcControl.swift b/eul/Utilities/SmcControl.swift
index b9bad431..8f7d9f66 100644
--- a/eul/Utilities/SmcControl.swift
+++ b/eul/Utilities/SmcControl.swift
@@ -40,13 +40,10 @@ class SmcControl: Refreshable {
         do {
             try SMCKit.open()
             sensors = try SMCKit.allKnownTemperatureSensors().map { .init(sensor: $0) }
-            fans = try (0..<SMCKit.fanCount()).map { .init(
-                fan: Fan(
-                    id: $0,
-                    name: $0.description,
-                    minSpeed: try SMCKit.fanMinSpeed($0),
-                    maxSpeed: try SMCKit.fanMaxSpeed($0)
-                )
+            fans = try (0..<SMCKit.fanCount()).map { FanData(
+                id: $0,
+                minSpeed: try? SMCKit.fanMinSpeed($0),
+                maxSpeed: try? SMCKit.fanMaxSpeed($0)
             ) }
         } catch {
             print("SMC init error", error)
@@ -74,13 +71,13 @@ class SmcControl: Refreshable {
                 print("error while getting temperature", error)
             }
         }
-        for fan in fans {
-            do {
-                fan.speed = try SMCKit.fanCurrentSpeed(fan.fan.id)
-            } catch {
-                fan.speed = 0
-                print("error while getting fan speed", error)
-            }
+        fans = fans.map {
+            FanData(
+                id: $0.id,
+                currentSpeed: try? SMCKit.fanCurrentSpeed($0.id),
+                minSpeed: $0.minSpeed,
+                maxSpeed: $0.maxSpeed
+            )
         }
         NotificationCenter.default.post(name: .StoreShouldRefresh, object: nil)
     }
diff --git a/eul/Views/Menu/FanMenuBlockView.swift b/eul/Views/Menu/FanMenuBlockView.swift
index abb498cb..37d9c820 100644
--- a/eul/Views/Menu/FanMenuBlockView.swift
+++ b/eul/Views/Menu/FanMenuBlockView.swift
@@ -20,7 +20,7 @@ struct FanMenuBlockView: View {
                 ForEach(fanStore.fans) { fan in
                     MiniSectionView(
                         title: "\("fan".localized()) \(fan.id + 1)",
-                        value: "\(fan.speed.description) rpm"
+                        value: fan.currentSpeedString
                     )
                     .frame(width: 80)
                 }
diff --git a/eul/Views/StatusBar/FanView.swift b/eul/Views/StatusBar/FanView.swift
index fc21520c..40b08d46 100644
--- a/eul/Views/StatusBar/FanView.swift
+++ b/eul/Views/StatusBar/FanView.swift
@@ -18,7 +18,8 @@ struct FanView: View {
     }
 
     var averageRpm: String {
-        "\(fanStore.fans.reduce(0) { $0 + $1.speed } / fanStore.fans.count) rpm"
+        let speeds = fanStore.fans.compactMap { $0.currentSpeed }
+        return "\(speeds.reduce(0) { $0 + $1 } / speeds.count) rpm"
     }
 
     var texts: [String] {
@@ -29,7 +30,7 @@ struct FanView: View {
             guard let fan = fanStore.fans.first(where: { $0.id == component.id }) else {
                 return nil
             }
-            return "\(fan.speed) rpm"
+            return fan.currentSpeedString
         }
     }