diff --git a/crates/sherpa-rs-sys/build.rs b/crates/sherpa-rs-sys/build.rs
index 80b9b5e..7da817e 100644
--- a/crates/sherpa-rs-sys/build.rs
+++ b/crates/sherpa-rs-sys/build.rs
@@ -25,7 +25,7 @@ lazy_static::lazy_static! {
     static ref RUST_CLANG_TARGET_MAP: HashMap<String, String> = {
         let mut m = HashMap::new();
         m.insert("aarch64-linux-android".to_string(), "armv8-linux-androideabi".to_string());
-        m.insert("aarch64-apple-ios-sim".to_string(), "arm64-apple-ios-sim".to_string());
+        m.insert("aarch64-apple-ios-sim".to_string(), "arm64-apple-ios-simulator".to_string());
         m
     };
 }
@@ -338,14 +338,15 @@ fn main() {
             debug_log!("Cache dir: {}", cache_dir.display());
 
             let lib_dir = cache_dir.join(&dist.name);
+
             // if is mobile then check if cache dir not empty
+            // Sherpa uses special directory structure for mobile
             let cache_dir_empty = cache_dir
                 .read_dir()
                 .map(|mut entries| entries.next().is_none())
                 .unwrap_or(true);
-            // Check if cache directory exists
-            // Sherpa uses special directory structure for mobile
-            if (!lib_dir.exists() && !is_mobile) || (is_mobile && cache_dir_empty) {
+
+            if (is_mobile && cache_dir_empty) || (!is_mobile && !lib_dir.exists()) {
                 let downloaded_file = fetch_file(&dist.url);
                 let hash = sha256(&downloaded_file);
                 // verify checksum
@@ -377,7 +378,7 @@ fn main() {
 
                 sherpa_libs = libs
                     .iter()
-                    .map(|p| download_binaries::extract_lib_name(p))
+                    .map(download_binaries::extract_lib_name)
                     .collect();
             } else {
                 sherpa_libs = extract_lib_names(&lib_dir, is_dynamic, &target_os);
diff --git a/crates/sherpa-rs-sys/dist.json b/crates/sherpa-rs-sys/dist.json
index 79f123e..3836ff0 100644
--- a/crates/sherpa-rs-sys/dist.json
+++ b/crates/sherpa-rs-sys/dist.json
@@ -21,27 +21,38 @@
         "android": {
             "archive": "sherpa-onnx-{tag}-android.tar.bz2",
             "is_dynamic": true,
-            "arch": {
-                "aarch64-linux-android": "arm64-v8a",
-                "x86_64-linux-android": "x86_64",
-                "armv7-linux-androideabi": "armeabi-v7a"
-            },
-            "libs": [
-                "jniLibs/{arch}/libsherpa-onnx-c-api.so",
-                "jniLibs/{arch}/libonnxruntime.so"
-            ]
+            "targets": {
+                "aarch64-linux-android": [
+                    "jniLibs/arm64-v8a/libsherpa-onnx-c-api.so",
+                    "jniLibs/arm64-v8a/libonnxruntime.so"
+                ],
+                "x86_64-linux-android": [
+                    "jniLibs/x86_64/libsherpa-onnx-c-api.so",
+                    "jniLibs/x86_64/libonnxruntime.so"
+                ],
+                "armv7-linux-androideabi": [
+                    "jniLibs/armeabi-v7a/libsherpa-onnx-c-api.so",
+                    "jniLibs/armeabi-v7a/libonnxruntime.so"
+                ]
+            }
         },
         "ios": {
             "archive": "sherpa-onnx-{tag}-ios.tar.bz2",
             "is_dynamic": false,
-            "arch": {
-                "aarch64-apple-ios": "ios-arm64",
-                "aarch64-apple-ios-sim": "ios-arm64-simulator"
-            },
-            "libs": [
-                "build-ios/ios-onnxruntime/onnxruntime.xcframework/{arch}/libonnxruntime.a",
-                "build-ios/sherpa-onnx.xcframework/{arch}/libsherpa-onnx.a"
-            ]
+            "targets": {
+                "aarch64-apple-ios": [
+                    "build-ios/ios-onnxruntime/1.17.1/onnxruntime.xcframework/ios-arm64/libonnxruntime.a",
+                    "build-ios/sherpa-onnx.xcframework/ios-arm64/libsherpa-onnx.a"
+                ],
+                "aarch64-apple-ios-sim": [
+                    "build-ios/ios-onnxruntime/1.17.1/onnxruntime.xcframework/ios-arm64_x86_64-simulator/libonnxruntime.a",
+                    "build-ios/sherpa-onnx.xcframework/ios-arm64_x86_64-simulator/libsherpa-onnx.a"
+                ],
+                "x86_64-apple-ios": [
+                    "build-ios/ios-onnxruntime/1.17.1/onnxruntime.xcframework/ios-arm64_x86_64-simulator/libonnxruntime.a",
+                    "build-ios/sherpa-onnx.xcframework/ios-arm64_x86_64-simulator/libsherpa-onnx.a"
+                ]
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/crates/sherpa-rs-sys/src/download_binaries.rs b/crates/sherpa-rs-sys/src/download_binaries.rs
index 0452c90..12d3169 100644
--- a/crates/sherpa-rs-sys/src/download_binaries.rs
+++ b/crates/sherpa-rs-sys/src/download_binaries.rs
@@ -164,24 +164,12 @@ impl DistTable {
         let name = archive.replace(".tar.bz2", "");
         let name = name.replace(".tar.gz", "");
 
-        let mut libs: Option<Vec<String>> = target_dist.get("libs").map(|libs| {
-            libs.as_array()
-                .unwrap()
-                .iter()
+        let libs: Option<Vec<String>> = target_dist["targets"][target].as_array().map(|libs| {
+            libs.iter()
                 .map(|lib| lib.as_str().unwrap().to_string())
                 .collect()
         });
 
-        // Replace {arch} in libs
-        let dist_arch = target_dist["arch"][target].as_str().map(|s| s.to_string());
-        if let Some(libs) = libs.as_mut() {
-            if let Some(arch) = dist_arch {
-                libs.iter_mut().for_each(|lib| {
-                    *lib = lib.replace("{arch}", &arch);
-                });
-            }
-        }
-
         let url = self.url.replace("{archive}", archive);
         let checksum = DIST_CHECKSUM.get(archive).unwrap();