diff --git a/Source/InputMethodController.mm b/Source/InputMethodController.mm
index 599bf82f..c82bf019 100644
--- a/Source/InputMethodController.mm
+++ b/Source/InputMethodController.mm
@@ -169,7 +169,8 @@ static double FindHighestScore(const vector<NodeAnchor>& nodes, double epsilon)
     [menu addItemWithTitle:NSLocalizedString(@"About vChewing…", @"") action:@selector(showAbout:) keyEquivalent:@""];
     if (optionKeyPressed) {
         [menu addItemWithTitle:NSLocalizedString(@"Reboot vChewing…", @"") action:@selector(selfTerminate:) keyEquivalent:@""];
-        [menu addItemWithTitle:NSLocalizedString(@"Deploy Zip Data…", @"") action:@selector(cnsDeploy:) keyEquivalent:@""];
+        [menu addItemWithTitle:NSLocalizedString(@"Deploy CNS Data…", @"") action:@selector(cnsDeploy:) keyEquivalent:@""];
+        [menu addItemWithTitle:NSLocalizedString(@"Load CNS Data…", @"") action:@selector(loadCNSData:) keyEquivalent:@""];
     }
     return menu;
 }
@@ -1551,6 +1552,16 @@ NS_INLINE size_t max(size_t a, size_t b) { return a > b ? a : b; }
     return YES;
 }
 
+- (BOOL)_checkCNSFile
+{
+    if (![LanguageModelManager checkIfCNSDataExistAndHashMatched]) {
+        [self beep];
+        NSLog(@"_checkCNSFile failed in the InputMethodController.");
+        return NO;
+    }
+    return YES;
+}
+
 - (void)cnsDeploy:(id)sender
 {
     [LanguageModelManager deployZipDataFile:@"UNICHARS"];
@@ -1586,6 +1597,15 @@ NS_INLINE size_t max(size_t a, size_t b) { return a > b ? a : b; }
     [LanguageModelManager loadUserPhraseReplacement];
 }
 
+- (void)loadCNSData:(id)sender
+{
+    if (!self._checkCNSFile) {
+        [self beep];
+    } else {
+        [LanguageModelManager loadCNSData];
+    }
+}
+
 - (void)showAbout:(id)sender
 {
     // show the About window, and also make the IME app itself the focus
diff --git a/Source/LanguageModelManager.h b/Source/LanguageModelManager.h
index 0d7dbfc8..52507e57 100644
--- a/Source/LanguageModelManager.h
+++ b/Source/LanguageModelManager.h
@@ -11,6 +11,7 @@
 #import "UserOverrideModel.h"
 #import "vChewingLM.h"
 #import "SSZipArchive.h"
+#import "AWFileHash.h"
 
 NS_ASSUME_NONNULL_BEGIN
 
diff --git a/Source/LanguageModelManager.mm b/Source/LanguageModelManager.mm
index a16a1891..f4177cf3 100644
--- a/Source/LanguageModelManager.mm
+++ b/Source/LanguageModelManager.mm
@@ -12,7 +12,6 @@
 #import <set>
 #import "OVStringHelper.h"
 #import "OVUTF8Helper.h"
-#import "AWFileHash.h"
 
 using namespace std;
 using namespace Taiyan::Gramambular;
@@ -74,7 +73,9 @@ static void LTLoadLanguageModelFile(NSString *filenameWithoutExtension, vChewing
         NSLog(@"Extracted CNS Data Not Found.");
         return NO;
     }
-    if ([AWFileHash md5HashOfFileAtPath:[self cnsDataPath]] != [[NSUserDefaults standardUserDefaults] objectForKey:kMD5HashCNSData]) {
+    if (![[AWFileHash md5HashOfFileAtPath:[self cnsDataPath]] isEqualToString: [[NSUserDefaults standardUserDefaults] objectForKey:kMD5HashCNSData]]) {
+        NSLog(@"Existing CNS CSV Data Fingerprint: %@", [AWFileHash md5HashOfFileAtPath:[self cnsDataPath]]);
+        NSLog(@"UserPlist CNS CSV Data Fingerprint: %@", [[NSUserDefaults standardUserDefaults] objectForKey:kMD5HashCNSData]);
         NSLog(@"Existing CNS CSV Data fingerprint mismatch, must be tampered since it gets extracted.");
         return NO;
     }