diff --git a/Bootstrap.xcodeproj/project.pbxproj b/Bootstrap.xcodeproj/project.pbxproj
index 8d6071b8..9b91894d 100644
--- a/Bootstrap.xcodeproj/project.pbxproj
+++ b/Bootstrap.xcodeproj/project.pbxproj
@@ -436,7 +436,7 @@
 					"$(inherited)",
 					"@executable_path/Frameworks",
 				);
-				MARKETING_VERSION = 1.0;
+				MARKETING_VERSION = 0.4.2;
 				OTHER_LDFLAGS = "";
 				PRODUCT_BUNDLE_IDENTIFIER = com.roothide.Bootstrap;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -470,7 +470,7 @@
 					"$(inherited)",
 					"@executable_path/Frameworks",
 				);
-				MARKETING_VERSION = 1.0;
+				MARKETING_VERSION = 0.4.2;
 				OTHER_LDFLAGS = "";
 				PRODUCT_BUNDLE_IDENTIFIER = com.roothide.Bootstrap;
 				PRODUCT_NAME = "$(TARGET_NAME)";
diff --git a/Bootstrap.xcodeproj/project.xcworkspace/xcuserdata/admin.xcuserdatad/UserInterfaceState.xcuserstate b/Bootstrap.xcodeproj/project.xcworkspace/xcuserdata/admin.xcuserdatad/UserInterfaceState.xcuserstate
index acd42bfc..12cc42c9 100644
Binary files a/Bootstrap.xcodeproj/project.xcworkspace/xcuserdata/admin.xcuserdatad/UserInterfaceState.xcuserstate and b/Bootstrap.xcodeproj/project.xcworkspace/xcuserdata/admin.xcuserdatad/UserInterfaceState.xcuserstate differ
diff --git a/Bootstrap/AppViewController.m b/Bootstrap/AppViewController.m
index db26bdb0..85d77843 100644
--- a/Bootstrap/AppViewController.m
+++ b/Bootstrap/AppViewController.m
@@ -160,6 +160,10 @@ - (void)updateData:(BOOL)sort {
         
         if([app.bundleURL.path.lastPathComponent isEqualToString:@"Bootstrap.app"])
             continue;
+        
+        if([app.bundleIdentifier isEqualToString:NSBundle.mainBundle.bundleIdentifier]
+           || [app.bundleIdentifier isEqualToString:@"com.roothide.Bootstrap"])
+            continue;
             
         [applications addObject:app];
     }
diff --git a/Bootstrap/Base.lproj/Main.storyboard b/Bootstrap/Base.lproj/Main.storyboard
index 30131ce2..48b1f903 100644
--- a/Bootstrap/Base.lproj/Main.storyboard
+++ b/Bootstrap/Base.lproj/Main.storyboard
@@ -52,7 +52,7 @@
                                 <nil key="textColor"/>
                                 <nil key="highlightedColor"/>
                             </label>
-                            <textField opaque="NO" contentMode="scaleToFill" horizontalHuggingPriority="248" fixedFrame="YES" enabled="NO" contentHorizontalAlignment="left" contentVerticalAlignment="center" text="Bootstrap(beta 4.1)" minimumFontSize="17" translatesAutoresizingMaskIntoConstraints="NO" id="mHC-UO-Fsn">
+                            <textField opaque="NO" contentMode="scaleToFill" horizontalHuggingPriority="248" fixedFrame="YES" enabled="NO" contentHorizontalAlignment="left" contentVerticalAlignment="center" text="Bootstrap(beta 4.2)" minimumFontSize="17" translatesAutoresizingMaskIntoConstraints="NO" id="mHC-UO-Fsn">
                                 <rect key="frame" x="14" y="34" width="300" height="51"/>
                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
                                 <fontDescription key="fontDescription" type="boldSystem" pointSize="42"/>
diff --git a/Bootstrap/ViewController.m b/Bootstrap/ViewController.m
index 9ffdc27d..f6db7578 100644
--- a/Bootstrap/ViewController.m
+++ b/Bootstrap/ViewController.m
@@ -67,8 +67,13 @@ - (void)viewDidLoad {
     
     if(isSystemBootstrapped())
     {
-        self.bootstraBtn.enabled = NO;
-        [self.bootstraBtn setTitle:Localized(@"Bootstrapped") forState:UIControlStateDisabled];
+        if(checkBootstrapVersion()) {
+            self.bootstraBtn.enabled = NO;
+            [self.bootstraBtn setTitle:Localized(@"Bootstrapped") forState:UIControlStateDisabled];
+        } else {
+            self.bootstraBtn.enabled = YES;
+            [self.bootstraBtn setTitle:Localized(@"Update") forState:UIControlStateNormal];
+        }
         
         self.respringBtn.enabled = YES;
         self.appEnablerBtn.enabled = YES;
@@ -134,7 +139,7 @@ - (void)viewDidLoad {
     uname(&systemInfo);
     [AppDelegate addLogText:[NSString stringWithFormat:@"device-model: %s",systemInfo.machine]];
     
-    [AppDelegate addLogText:[NSString stringWithFormat:@"app-version: %@/%@",NSBundle.mainBundle.infoDictionary[@"CFBundleVersion"],NSBundle.mainBundle.infoDictionary[@"CFBundleShortVersionString"]]];
+    [AppDelegate addLogText:[NSString stringWithFormat:@"app-version: %@",NSBundle.mainBundle.infoDictionary[@"CFBundleShortVersionString"]]];
     
     [AppDelegate addLogText:[NSString stringWithFormat:@"boot-session: %@",getBootSession()]];
     
@@ -162,20 +167,33 @@ - (void)viewDidLoad {
     
     if(isSystemBootstrapped())
     {
-        [self checkServer];
+        if([self checkServer]) {
+            [AppDelegate addLogText:Localized(@"bootstrap server check successful")];
+        }
         
         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(checkServer)
                                               name:UIApplicationWillEnterForegroundNotification object:nil];
     }
+    
+    if(isBootstrapInstalled() || isSystemBootstrapped()) {
+        if([UIApplication.sharedApplication canOpenURL:[NSURL URLWithString:@"filza://"]]
+           || [LSPlugInKitProxy pluginKitProxyForIdentifier:@"com.tigisoftware.Filza.Sharing"])
+        {
+            [AppDelegate showMesage:Localized(@"It seems that you have the Filza app installed, which may be detected as jailbroken. You can enable Tweak for it to hide it.") title:Localized(@"Warnning")];
+        }
+    }
 }
 
--(void)checkServer
+-(BOOL)checkServer
 {
     static bool alerted = false;
-    if(alerted) return;
+    if(alerted) return NO;
+    
+    BOOL ret=NO;
     
     if(spawnRoot(jbroot(@"/basebin/bootstrapd"), @[@"check"], nil, nil) != 0)
     {
+        ret = NO;
         alerted = true;
         
         UIAlertController *alert = [UIAlertController alertControllerWithTitle:Localized(@"Server Not Running") message:Localized(@"for unknown reasons the bootstrap server is not running, the only thing we can do is to restart it now.") preferredStyle:UIAlertControllerStyleAlert];
@@ -196,9 +214,11 @@ -(void)checkServer
         
         [AppDelegate showAlert:alert];
     } else {
-        [AppDelegate addLogText:Localized(@"bootstrap server check successful")];
         [self updateOpensshStatus];
+        ret = YES;
     }
+    
+    return ret;
 }
 
 -(void)updateOpensshStatus {
@@ -373,6 +393,22 @@ - (IBAction)openssh:(id)sender {
 }
 
 - (IBAction)bootstrap:(id)sender {
+    
+    if(isSystemBootstrapped())
+    {
+        ASSERT(checkBootstrapVersion()==false);
+        
+        UIAlertController *alert = [UIAlertController alertControllerWithTitle:Localized(@"Update") message:Localized(@"The current bootstrapped version is inconsistent with the Bootstrap app version, and you need to reboot the device to update it.") preferredStyle:UIAlertControllerStyleAlert];
+        
+        [alert addAction:[UIAlertAction actionWithTitle:Localized(@"Cancel") style:UIAlertActionStyleDefault handler:nil]];
+        [alert addAction:[UIAlertAction actionWithTitle:Localized(@"Reboot Device") style:UIAlertActionStyleDestructive handler:^(UIAlertAction *action) {
+            ASSERT(spawnRoot(NSBundle.mainBundle.executablePath, @[@"reboot"], nil, nil)==0);
+        }]];
+        
+        [AppDelegate showAlert:alert];
+        return;
+    }
+    
     if(![self checkTSVersion]) {
         [AppDelegate showMesage:Localized(@"Your trollstore version is too old, Bootstrap only supports trollstore>=2.0") title:Localized(@"Error")];
         return;
@@ -384,7 +420,7 @@ - (IBAction)bootstrap:(id)sender {
     }
     
     UIImpactFeedbackGenerator* generator = [[UIImpactFeedbackGenerator alloc] initWithStyle:UIImpactFeedbackStyleSoft];
-    generator.impactOccurred;
+    [generator impactOccurred];
 
     if(find_jbroot()) //make sure jbroot() function available
     {
@@ -437,6 +473,7 @@ - (IBAction)bootstrap:(id)sender {
                 [AppDelegate addLogText:[NSString stringWithFormat:@"openssh launch faild(%d):\n%@\n%@", status, log, err]];
         }
         
+        [generator impactOccurred];
         [AppDelegate addLogText:@"respring now..."]; sleep(1);
         
          status = spawnBootstrap((char*[]){"/usr/bin/sbreload", NULL}, &log, &err);
diff --git a/Bootstrap/basebin/bootstrap.dylib b/Bootstrap/basebin/bootstrap.dylib
index 4bed209c..9d8a011e 100755
Binary files a/Bootstrap/basebin/bootstrap.dylib and b/Bootstrap/basebin/bootstrap.dylib differ
diff --git a/Bootstrap/basebin/bootstrapd b/Bootstrap/basebin/bootstrapd
index e1c39be4..db3dea3f 100755
Binary files a/Bootstrap/basebin/bootstrapd and b/Bootstrap/basebin/bootstrapd differ
diff --git a/Bootstrap/basebin/devtest b/Bootstrap/basebin/devtest
index 743f854d..001366d2 100755
Binary files a/Bootstrap/basebin/devtest and b/Bootstrap/basebin/devtest differ
diff --git a/Bootstrap/basebin/preload b/Bootstrap/basebin/preload
index 8e5adbcd..df9e3bc7 100755
Binary files a/Bootstrap/basebin/preload and b/Bootstrap/basebin/preload differ
diff --git a/Bootstrap/basebin/preload.dylib b/Bootstrap/basebin/preload.dylib
index 5890d807..9283a10a 100755
Binary files a/Bootstrap/basebin/preload.dylib and b/Bootstrap/basebin/preload.dylib differ
diff --git a/Bootstrap/basebin/rebuildapp b/Bootstrap/basebin/rebuildapp
index 30c311d4..eff30a8f 100755
Binary files a/Bootstrap/basebin/rebuildapp and b/Bootstrap/basebin/rebuildapp differ
diff --git a/Bootstrap/basebin/uicache b/Bootstrap/basebin/uicache
index 04e848bb..524c6b52 100755
Binary files a/Bootstrap/basebin/uicache and b/Bootstrap/basebin/uicache differ
diff --git a/Bootstrap/bootstrap.h b/Bootstrap/bootstrap.h
index 2b3fc370..de788f8f 100644
--- a/Bootstrap/bootstrap.h
+++ b/Bootstrap/bootstrap.h
@@ -13,5 +13,6 @@ bool isBootstrapInstalled();
 
 bool isSystemBootstrapped();
 
+bool checkBootstrapVersion();
 
 #endif /* bootstrap_h */
diff --git a/Bootstrap/bootstrap.m b/Bootstrap/bootstrap.m
index 337e98a7..5124bce0 100644
--- a/Bootstrap/bootstrap.m
+++ b/Bootstrap/bootstrap.m
@@ -126,7 +126,7 @@ int rebuildBasebin()
     return 0;
 }
 
-int startBootstrapd()
+int startBootstrapServer()
 {
     NSString* log=nil;
     NSString* err=nil;
@@ -209,7 +209,7 @@ int InstallBootstrap(NSString* jbroot_path)
     ASSERT(rebuildBasebin() == 0);
     
     STRAPLOG("Status: Starting Bootstrapd");
-    ASSERT(startBootstrapd() == 0);
+    ASSERT(startBootstrapServer() == 0);
     
     STRAPLOG("Status: Finalizing Bootstrap");
     NSString* log=nil;
@@ -252,7 +252,7 @@ int InstallBootstrap(NSString* jbroot_path)
 
 int ReRandomizeBootstrap()
 {
-    //jbroot() disabled
+    //jbroot() unavailable
     
     NSFileManager* fm = NSFileManager.defaultManager;
     
@@ -292,13 +292,13 @@ int ReRandomizeBootstrap()
     ASSERT([fm createSymbolicLinkAtPath:[jbroot_secondary stringByAppendingPathComponent:@".jbroot"]
                     withDestinationPath:jbroot_path error:nil]);
     
-    //jbroot() enabled
+    //jbroot() available now
     
     STRAPLOG("Status: Building Base Binaries");
     ASSERT(rebuildBasebin() == 0);
     
     STRAPLOG("Status: Starting Bootstrapd");
-    ASSERT(startBootstrapd() == 0);
+    ASSERT(startBootstrapServer() == 0);
     
     STRAPLOG("Status: Updating Symlinks");
     ASSERT(spawnBootstrap((char*[]){"/bin/sh", "/usr/libexec/updatelinks.sh", NULL}, nil, nil) == 0);
@@ -314,6 +314,12 @@ int bootstrap()
     
     NSFileManager* fm = NSFileManager.defaultManager;
     
+    struct stat st;
+    if(lstat("/var/jb", &st)==0) {
+        //remove /var/jb to avoid incorrect library loading via @rpath
+        ASSERT([fm removeItemAtPath:@"/var/jb" error:nil]);
+    }
+    
     NSString* jbroot_path = find_jbroot();
     
     if(!jbroot_path) {
@@ -355,7 +361,7 @@ int bootstrap()
     STRAPLOG("Status: Rebuilding Apps");
     ASSERT(spawnBootstrap((char*[]){"/bin/sh", "/basebin/rebuildapps.sh", NULL}, nil, nil) == 0);
 
-    NSDictionary* bootinfo = @{@"bootsession":getBootSession()};
+    NSDictionary* bootinfo = @{@"bootsession":getBootSession(), @"bootversion":NSBundle.mainBundle.infoDictionary[@"CFBundleShortVersionString"]};
     ASSERT([bootinfo writeToFile:jbroot(@"/basebin/.bootinfo.plist") atomically:YES]);
     
     STRAPLOG("Status: Bootstrap Successful");
@@ -445,3 +451,16 @@ bool isSystemBootstrapped()
     
     return [bootsession isEqualToString:getBootSession()];
 }
+
+bool checkBootstrapVersion()
+{
+    if(!isBootstrapInstalled()) return false;
+    
+    NSDictionary* bootinfo = [NSDictionary dictionaryWithContentsOfFile:jbroot(@"/basebin/.bootinfo.plist")];
+    if(!bootinfo) return false;
+    
+    NSString* bootversion = bootinfo[@"bootversion"];
+    if(!bootversion) return false;
+    
+    return [bootversion isEqualToString:NSBundle.mainBundle.infoDictionary[@"CFBundleShortVersionString"]];
+}
diff --git a/Bootstrap/credits.h b/Bootstrap/credits.h
index af43871b..6d13fc3a 100644
--- a/Bootstrap/credits.h
+++ b/Bootstrap/credits.h
@@ -2,10 +2,13 @@
 #define credits_h
 // dictionary will be sorted alphabetically
 NSDictionary* CREDITS = @{
+@"Nick Chan" : @"https://github.com/asdfugil",
 @"opa334" : @"http://github.com/opa334",
 @"hayden" : @"https://procursus.social/@hayden",
 @"CKatri" : @"https://procursus.social/@cameron",
 @"Alfie" : @"https://alfiecg.uk",
+@"Mineek" : @"https://github.com/mineek",
+@"hrtowii" : @"https://github.com/hrtowii",
 @"BomberFish" : @"https://twitter.com/bomberfish77",
 @"Évelyne" : @"http://github.com/evelyneee",
 @"sourcelocation" : @"http://github.com/sourcelocation",
@@ -28,7 +31,6 @@ NSDictionary* CREDITS = @{
 @"Nebula" : @"https://itsnebula.net",
 @"DuyKhanhTran" : @"https://twitter.com/TranKha50277352",
 @"Nathan" : @"https://github.com/verygenericname",
-@"Nick Chan" : @"https://nickchan.lol",
 @"Muirey03" : @"https://twitter.com/Muirey03",
 @"absidue" : @"https://github.com/absidue",
 @"MasterMike" : @"https://ios.cfw.guide",
@@ -55,6 +57,7 @@ NSDictionary* CREDITS = @{
 @"akusio" : @"https://twitter.com/akusio_rr",
 @"xsf1re" : @"https://twitter.com/xsf1re",
 @"PoomSmart" : @"https://twitter.com/poomsmart",
+@"katana" : @"https://twitter.com/nsbedtime",
 @"Elias Sfeir" : @"https://twitter.com/eliassfeir1",
 @"SquidGesture" : @"https://twitter.com/lclrc",
 @"yandevelop" : @"https://twitter.com/yandevelop",
diff --git a/Bootstrap/main.m b/Bootstrap/main.m
index ffd8c732..d4097cd8 100644
--- a/Bootstrap/main.m
+++ b/Bootstrap/main.m
@@ -26,6 +26,12 @@ int main(int argc, char * argv[]) {
             } else if(strcmp(argv[1], "rebuildiconcache")==0) {
                 int rebuildIconCache();
                 exit(rebuildIconCache());
+            } else if(strcmp(argv[1], "reboot")==0) {
+                sync();
+                sleep(1);
+                reboot(0);
+                sleep(5);
+                exit(-1);
             } else if(strcmp(argv[1], "testprefs")==0) {
                 SYSLOG("locale=%@", [NSUserDefaults.appDefaults valueForKey:@"locale"]);
                 [NSUserDefaults.appDefaults setValue:@"CA" forKey:@"locale"];
diff --git a/Bootstrap/utils.h b/Bootstrap/utils.h
index ed3d5c8a..f796c068 100644
--- a/Bootstrap/utils.h
+++ b/Bootstrap/utils.h
@@ -40,4 +40,10 @@ void killAllForApp(const char* bundlePath);
                                                       user:(BOOL)arg3;
 @end
 
+@interface LSPlugInKitProxy : NSObject
++(id)pluginKitProxyForIdentifier:(id)arg1 ;
+- (NSString *)bundleIdentifier;
+@property (nonatomic,readonly) NSURL *dataContainerURL;
+@end
+
 #endif /* utils_h */
diff --git a/Makefile b/Makefile
index 130951f0..e0e75904 100644
--- a/Makefile
+++ b/Makefile
@@ -18,7 +18,7 @@ XCODE_SCHEME = Bootstrap
 
 XCODEPROJ_NAME = Bootstrap
 
-Bootstrap_XCODEFLAGS = MARKETING_VERSION=$(THEOS_PACKAGE_BASE_VERSION) \
+Bootstrap_XCODEFLAGS = \
 	IPHONEOS_DEPLOYMENT_TARGET="$(IPHONEOS_DEPLOYMENT_TARGET)" \
 	CODE_SIGN_IDENTITY="" \
 	AD_HOC_CODE_SIGNING_ALLOWED=YES