Add support for 17.4+ and non TXM devices

Sources/JITSession.swift

@@ -42,7 +42,18 @@ final class JITSession {
         _ = try? sendCommand("QStartNoAckMode", over: debugProxy)
         debug_proxy_set_ack_mode(debugProxy, 0)
 
-        try ScriptRunner(targetPID: targetPID, debugProxy: debugProxy, progress: progress).run()
+        if ProcessInfo.processInfo.hasTXM {
+            try ScriptRunner(targetPID: targetPID, debugProxy: debugProxy, progress: progress).run()
+        } else {
+            try attachWithoutScript(targetPID: targetPID, debugProxy: debugProxy, progress: progress)
+        }
+    }
+
+    private func attachWithoutScript(targetPID: Int32, debugProxy: OpaquePointer, progress: (String) -> Void) throws {
+        progress("Attaching to pid \(targetPID). This device has no TXM, so the attach alone enables JIT and the script is skipped.")
+        _ = try sendCommand("vAttach;\(String(targetPID, radix: 16))", over: debugProxy)
+        _ = try? sendCommand("D", over: debugProxy)
+        progress("JIT enabled (debugger attached and detached).")
     }
 
     private func openPairingFile() throws -> OpaquePointer {

Sources/ProcessInfo+TXM.swift

@@ -0,0 +1,58 @@
+import Foundation
+
+extension ProcessInfo {
+    var hasTXM: Bool {
+        let hardware = Self.hardwareIdentifier()
+
+        if Self.isIOS27OrNewer {
+            return hardware != "iPad8,11" && hardware != "iPad8,12"
+        }
+
+        if Self.isIOS26OrNewer {
+            return Self.hasTXMSupport(hardwareIdentifier: hardware)
+        }
+
+        return false
+    }
+
+    private static func hasTXMSupport(hardwareIdentifier: String) -> Bool {
+        let firstTXM = 14.2
+        let iPadTXM = 14.5
+        guard let version = deviceVersion(from: hardwareIdentifier) else {
+            return false
+        }
+        if hardwareIdentifier.hasPrefix("iPad") {
+            return version >= iPadTXM
+        }
+        return version >= firstTXM
+    }
+
+    private static func deviceVersion(from identifier: String) -> Double? {
+        func version(forPrefix prefix: String) -> Double? {
+            guard identifier.hasPrefix(prefix) else { return nil }
+            let parts = identifier.dropFirst(prefix.count).split(separator: ",")
+            guard parts.count == 2, let major = Int(parts[0]), let minor = Int(parts[1]) else { return nil }
+            return Double("\(major).\(minor)")
+        }
+        return version(forPrefix: "iPhone") ?? version(forPrefix: "iPad")
+    }
+
+    private static func hardwareIdentifier() -> String {
+        var size = 0
+        sysctlbyname("hw.machine", nil, &size, nil, 0)
+        guard size > 0 else { return "" }
+        var buffer = [CChar](repeating: 0, count: size)
+        sysctlbyname("hw.machine", &buffer, &size, nil, 0)
+        return String(cString: buffer)
+    }
+
+    private static var isIOS26OrNewer: Bool {
+        if #available(iOS 26.0, *) { return true }
+        return false
+    }
+
+    private static var isIOS27OrNewer: Bool {
+        if #available(iOS 27.0, *) { return true }
+        return false
+    }
+}