diff --git a/AltStore/Operations/AuthenticationOperation.swift b/AltStore/Operations/AuthenticationOperation.swift
index 9a925262..36876e4a 100644
--- a/AltStore/Operations/AuthenticationOperation.swift
+++ b/AltStore/Operations/AuthenticationOperation.swift
@@ -582,7 +582,7 @@ private extension AuthenticationOperation
             return completionHandler(.failure(OperationError.unknownUDID))
         }
         
-        ALTAppleAPI.shared.fetchDevices(for: team, session: session) { (devices, error) in
+        ALTAppleAPI.shared.fetchDevices(for: team, types: [.iphone, .ipad], session: session) { (devices, error) in
             do
             {
                 let devices = try Result(devices, error).get()
@@ -593,7 +593,7 @@ private extension AuthenticationOperation
                 }
                 else
                 {
-                    ALTAppleAPI.shared.registerDevice(name: UIDevice.current.name, identifier: udid, team: team, session: session) { (device, error) in
+                    ALTAppleAPI.shared.registerDevice(name: UIDevice.current.name, identifier: udid, type: .iphone, team: team, session: session) { (device, error) in
                         completionHandler(Result(device, error))
                     }
                 }
diff --git a/AltStore/Operations/FetchProvisioningProfilesOperation.swift b/AltStore/Operations/FetchProvisioningProfilesOperation.swift
index b48cf9f4..0a836d04 100644
--- a/AltStore/Operations/FetchProvisioningProfilesOperation.swift
+++ b/AltStore/Operations/FetchProvisioningProfilesOperation.swift
@@ -133,7 +133,7 @@ extension FetchProvisioningProfilesOperation
                 
                 #if DEBUG
                 
-                if app.bundleIdentifier.hasPrefix(StoreApp.altstoreAppID) || StoreApp.alternativeAltStoreAppIDs.contains(where: app.bundleIdentifier.hasPrefix)
+                if app.isAltStoreApp
                 {
                     // Use legacy bundle ID format for AltStore.
                     preferredBundleID = "com.\(team.identifier).\(app.bundleIdentifier)"
@@ -178,7 +178,7 @@ extension FetchProvisioningProfilesOperation
                 let parentBundleID = parentApp?.bundleIdentifier ?? app.bundleIdentifier
                 let updatedParentBundleID: String
                 
-                if app.bundleIdentifier.hasPrefix(StoreApp.altstoreAppID) || StoreApp.alternativeAltStoreAppIDs.contains(where: app.bundleIdentifier.hasPrefix)
+                if app.isAltStoreApp
                 {
                     // Use legacy bundle ID format for AltStore (and its extensions).
                     updatedParentBundleID = "com.\(team.identifier).\(parentBundleID)"
@@ -463,7 +463,7 @@ extension FetchProvisioningProfilesOperation
     
     func fetchProvisioningProfile(for appID: ALTAppID, team: ALTTeam, session: ALTAppleAPISession, completionHandler: @escaping (Result<ALTProvisioningProfile, Error>) -> Void)
     {
-        ALTAppleAPI.shared.fetchProvisioningProfile(for: appID, team: team, session: session) { (profile, error) in
+        ALTAppleAPI.shared.fetchProvisioningProfile(for: appID, deviceType: .iphone, team: team, session: session) { (profile, error) in
             switch Result(profile, error)
             {
             case .failure(let error): completionHandler(.failure(error))
@@ -477,7 +477,7 @@ extension FetchProvisioningProfilesOperation
                     case .success:
                         
                         // Fetch new provisiong profile
-                        ALTAppleAPI.shared.fetchProvisioningProfile(for: appID, team: team, session: session) { (profile, error) in
+                        ALTAppleAPI.shared.fetchProvisioningProfile(for: appID, deviceType: .iphone, team: team, session: session) { (profile, error) in
                             completionHandler(Result(profile, error))
                         }
                     }
diff --git a/AltStore/Operations/ResignAppOperation.swift b/AltStore/Operations/ResignAppOperation.swift
index 64884e0c..38f2e51d 100644
--- a/AltStore/Operations/ResignAppOperation.swift
+++ b/AltStore/Operations/ResignAppOperation.swift
@@ -169,7 +169,7 @@ private extension ResignAppOperation
                 
                 var additionalValues: [String: Any] = [Bundle.Info.urlTypes: allURLSchemes]
 
-                if self.context.bundleIdentifier == StoreApp.altstoreAppID || StoreApp.alternativeAltStoreAppIDs.contains(self.context.bundleIdentifier)
+                if app.isAltStoreApp
                 {
                     guard let udid = Bundle.main.object(forInfoDictionaryKey: Bundle.Info.deviceID) as? String else { throw OperationError.unknownUDID }
                     additionalValues[Bundle.Info.deviceID] = udid
diff --git a/AltStoreCore/Model/StoreApp.swift b/AltStoreCore/Model/StoreApp.swift
index 58b05c37..b5797521 100644
--- a/AltStoreCore/Model/StoreApp.swift
+++ b/AltStoreCore/Model/StoreApp.swift
@@ -16,13 +16,10 @@ public extension StoreApp
 {
     #if ALPHA
     static let altstoreAppID = "com.rileytestut.AltStore.Alpha"
-    static let alternativeAltStoreAppIDs: Set<String> = ["com.rileytestut.AltStore", "com.rileytestut.AltStore.Beta"]
     #elseif BETA
     static let altstoreAppID = "com.rileytestut.AltStore.Beta"
-    static let alternativeAltStoreAppIDs: Set<String> = ["com.rileytestut.AltStore", "com.rileytestut.AltStore.Alpha"]
     #else
     static let altstoreAppID = "com.rileytestut.AltStore"
-    static let alternativeAltStoreAppIDs: Set<String> = ["com.rileytestut.AltStore.Beta", "com.rileytestut.AltStore.Alpha"]
     #endif
     
     static let dolphinAppID = "me.oatmealdome.dolphinios-njb"
diff --git a/Dependencies/AltSign b/Dependencies/AltSign
index 2856e479..b027505d 160000
--- a/Dependencies/AltSign
+++ b/Dependencies/AltSign
@@ -1 +1 @@
-Subproject commit 2856e479c3447b361b98bfc2b5489841f997ebe1
+Subproject commit b027505dcc228aa854272f55bb4fcd31cdf2d96e