diff --git a/AltStore/Managing Apps/AppManager.swift b/AltStore/Managing Apps/AppManager.swift
index ca241cce..8292154a 100644
--- a/AltStore/Managing Apps/AppManager.swift	
+++ b/AltStore/Managing Apps/AppManager.swift	
@@ -667,12 +667,14 @@ private extension AppManager
                 case .refresh(let app):
                     // Check if backup app is installed in place of real app.
                     let uti = UTTypeCopyDeclaration(app.installedBackupAppUTI as CFString)?.takeRetainedValue() as NSDictionary?
-                    if app.certificateSerialNumber != group.context.certificate?.serialNumber || uti != nil || app.needsResign
+
+                    if app.certificateSerialNumber != group.context.certificate?.serialNumber || uti != nil || app.needsResign || (UIDevice.current.isJailbroken && !UserDefaults.standard.localServerSupportsRefreshing)
                     {
                         // Resign app instead of just refreshing profiles because either:
                         // * Refreshing using different certificate
                         // * Backup app is still installed
                         // * App explicitly needs resigning
+                        // * Device is jailbroken and on iOS 14.0 or later (b/c refreshing with provisioning profiles is broken)
                         
                         let installProgress = self._install(app, operation: operation, group: group) { (result) in
                             self.finish(operation, result: result, group: group, progress: progress)
diff --git a/AltStoreCore/Extensions/UserDefaults+AltStore.swift b/AltStoreCore/Extensions/UserDefaults+AltStore.swift
index 4c0dfe3d..db828fc6 100644
--- a/AltStoreCore/Extensions/UserDefaults+AltStore.swift
+++ b/AltStoreCore/Extensions/UserDefaults+AltStore.swift
@@ -33,6 +33,8 @@ public extension UserDefaults
     @NSManaged var isLegacyDeactivationSupported: Bool
     @NSManaged var activeAppLimitIncludesExtensions: Bool
     
+    @NSManaged var localServerSupportsRefreshing: Bool
+    
     var activeAppsLimit: Int? {
         get {
             return self._activeAppsLimit?.intValue
@@ -56,10 +58,14 @@ public extension UserDefaults
         let isLegacyDeactivationSupported = !ProcessInfo.processInfo.isOperatingSystemAtLeast(ios13_5)
         let activeAppLimitIncludesExtensions = !ProcessInfo.processInfo.isOperatingSystemAtLeast(ios13_5)
         
+        let ios14 = OperatingSystemVersion(majorVersion: 14, minorVersion: 0, patchVersion: 0)
+        let localServerSupportsRefreshing = !ProcessInfo.processInfo.isOperatingSystemAtLeast(ios14)
+        
         let defaults = [
             #keyPath(UserDefaults.isBackgroundRefreshEnabled): true,
             #keyPath(UserDefaults.isLegacyDeactivationSupported): isLegacyDeactivationSupported,
             #keyPath(UserDefaults.activeAppLimitIncludesExtensions): activeAppLimitIncludesExtensions,
+            #keyPath(UserDefaults.localServerSupportsRefreshing): localServerSupportsRefreshing,
             #keyPath(UserDefaults.requiresAppGroupMigration): true
         ]