diff --git a/Xcodes/Backend/AppState.swift b/Xcodes/Backend/AppState.swift
index 423e780..f2bcf46 100644
--- a/Xcodes/Backend/AppState.swift
+++ b/Xcodes/Backend/AppState.swift
@@ -894,7 +894,11 @@ class AppState: ObservableObject {
             }
             .map { availableXcode -> Xcode in
                 let installedXcode = installedXcodes.first(where: { installedXcode in
-                    availableXcode.version.isEquivalent(to: installedXcode.version)
+                    if availableXcode.architectures == nil {
+                        return availableXcode.version.isEquivalent(to: installedXcode.version)
+                    } else {
+                        return availableXcode.xcodeID == installedXcode.xcodeID
+                    }
                 })
 
                 let identicalBuilds: [XcodeID]
@@ -913,7 +917,7 @@ class AppState: ObservableObject {
                 }
                 
                 // If the existing install state is "installing", keep it 
-                let existingXcodeInstallState = allXcodes.first { $0.version == availableXcode.version && $0.installState.installing }?.installState
+                let existingXcodeInstallState = allXcodes.first { $0.id == availableXcode.xcodeID && $0.installState.installing }?.installState
                 // Otherwise, determine it from whether there's an installed Xcode
                 let defaultXcodeInstallState: XcodeInstallState = installedXcode.map { .installed($0.path) } ?? .notInstalled
                 
diff --git a/Xcodes/Backend/InstalledXcode.swift b/Xcodes/Backend/InstalledXcode.swift
index 87ec7f1..bc2ddd3 100644
--- a/Xcodes/Backend/InstalledXcode.swift
+++ b/Xcodes/Backend/InstalledXcode.swift
@@ -1,6 +1,7 @@
 import Foundation
 import Version
 import Path
+import XcodesKit
 
 /// A version of Xcode that's already installed
 public struct InstalledXcode: Equatable {
@@ -36,16 +37,20 @@ public struct InstalledXcode: Equatable {
             prereleaseIdentifiers = ["beta"]
         }
         
-        // need:
-        // lipo -archs /Applications/Xcode-26.0.0-Beta.3.app/Contents/MacOS/Xcode
-
+        let archsString = try? XcodesKit.Current.shell.archs(path.url.appending(path: "Contents/MacOS/Xcode")).out
+        
+        let architectures = archsString?
+            .trimmingCharacters(in: .whitespacesAndNewlines)
+            .split(separator: " ")
+            .compactMap { Architecture(rawValue: String($0)) }
+        
         let version = Version(major: bundleVersion.major,
                                minor: bundleVersion.minor,
                                patch: bundleVersion.patch,
                                prereleaseIdentifiers: prereleaseIdentifiers,
                                buildMetadataIdentifiers: [versionPlist.productBuildVersion].compactMap { $0 })
         
-        self.xcodeID = XcodeID(version: version, architectures: nil)
+        self.xcodeID = XcodeID(version: version, architectures: architectures)
     }
 }
 
diff --git a/Xcodes/Backend/Xcode.swift b/Xcodes/Backend/Xcode.swift
index 20177a0..b172149 100644
--- a/Xcodes/Backend/Xcode.swift
+++ b/Xcodes/Backend/Xcode.swift
@@ -17,18 +17,6 @@ public struct XcodeID: Codable, Hashable, Identifiable {
         self.version = version
         self.architectures = architectures
     }
-    
-    public var architectureString: String {
-        switch architectures {
-        case .some(let architectures):
-            if architectures.isAppleSilicon {
-                return "Apple Silicon"
-            } else {
-                return "Universal"
-            }
-        default: return "Universal"
-        }
-    }
 }
 
 struct Xcode: Identifiable, CustomStringConvertible {
diff --git a/Xcodes/XcodesKit/Sources/XcodesKit/Shell/Process.swift b/Xcodes/XcodesKit/Sources/XcodesKit/Shell/Process.swift
index b83a079..daf28e9 100644
--- a/Xcodes/XcodesKit/Sources/XcodesKit/Shell/Process.swift
+++ b/Xcodes/XcodesKit/Sources/XcodesKit/Shell/Process.swift
@@ -6,10 +6,14 @@ public typealias ProcessOutput = (status: Int32, out: String, err: String)
 
 extension Process {
     static func run(_ executable: Path, workingDirectory: URL? = nil, input: String? = nil, _ arguments: String...) async throws -> ProcessOutput {
-        return try await run(executable.url, workingDirectory: workingDirectory, input: input, arguments)
+        return try run(executable.url, workingDirectory: workingDirectory, input: input, arguments)
     }
     
-    static func run(_ executable: URL, workingDirectory: URL? = nil, input: String? = nil, _ arguments: [String]) async throws -> ProcessOutput {
+    static func run(_ executable: Path, workingDirectory: URL? = nil, input: String? = nil, _ arguments: String...) throws -> ProcessOutput {
+        return try run(executable.url, workingDirectory: workingDirectory, input: input, arguments)
+    }
+    
+    static func run(_ executable: URL, workingDirectory: URL? = nil, input: String? = nil, _ arguments: [String]) throws -> ProcessOutput {
         
         let process = Process()
         process.currentDirectoryURL = workingDirectory ?? executable.deletingLastPathComponent()
diff --git a/Xcodes/XcodesKit/Sources/XcodesKit/Shell/XcodesShell.swift b/Xcodes/XcodesKit/Sources/XcodesKit/Shell/XcodesShell.swift
index 4c72795..ef091f2 100644
--- a/Xcodes/XcodesKit/Sources/XcodesKit/Shell/XcodesShell.swift
+++ b/Xcodes/XcodesKit/Sources/XcodesKit/Shell/XcodesShell.swift
@@ -26,4 +26,8 @@ public struct XcodesShell {
     public var deleteRuntime: (String) async throws -> ProcessOutput = {
         try await Process.run(Path.root.usr.bin.join("xcrun"), "simctl", "runtime", "delete", $0)
     }
+   
+    public var archs: (URL) throws -> ProcessOutput = {
+        try Process.run(Path.root.usr.bin.join("lipo"), "-archs", $0.path)
+    }
 }