diff --git a/radio.c b/radio.c
index f54ece7..4ed3555 100644
--- a/radio.c
+++ b/radio.c
@@ -81,22 +81,6 @@ void radio_print_version(radio_device_t* dev, FILE *out)
     dev->print_version(dev, out);
 }
 
-//
-// Read firmware image from the device.
-//
-void radio_download(radio_device_t* dev)
-{
-    if (! trace_flag) {
-        fprintf(stderr, "Read device: ");
-        fflush(stderr);
-    }
-
-    dev->download(dev);
-
-    if (! trace_flag)
-        fprintf(stderr, " done.\n");
-}
-
 //
 // Write firmware image to the device.
 //
diff --git a/src/lib.rs b/src/lib.rs
index 413b9bf..de343d9 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -72,6 +72,8 @@ pub extern "C" fn rust_main(_argc: c_int, _argv: *const *const c_char) -> c_int
     }
   };
 
+  let trace_flag = matches.opt_present("t");
+
   let list_flag = matches.opt_present("l");
   let verify_flag = matches.opt_present("v");
   let read_flag = matches.opt_present("r");
@@ -120,7 +122,7 @@ pub extern "C" fn rust_main(_argc: c_int, _argv: *const *const c_char) -> c_int
     } else {
       // Update device from text config file.
         let device = radio::connect();
-        radio::download(device);
+        radio::download(device, trace_flag);
         radio::print_version(device);
         radio::save_image(device, "device.img");
         radio::parse_config(device, &config_filename);
@@ -144,7 +146,7 @@ pub extern "C" fn rust_main(_argc: c_int, _argv: *const *const c_char) -> c_int
 
     // Dump device to image file.
       let device = radio::connect();
-      radio::download(device);
+      radio::download(device, trace_flag);
       radio::print_version(device);
       radio::disconnect();
       radio::save_image(device, "device.img");
diff --git a/src/radio.rs b/src/radio.rs
index db8147d..07229f3 100644
--- a/src/radio.rs
+++ b/src/radio.rs
@@ -15,9 +15,6 @@ extern {
 
   fn set_active_device(device: *const radio_device_t);
 
-  //fn radio_connect() -> *const radio_device_t;
-
-  fn radio_download(device: *const radio_device_t);
   fn radio_upload(device: *const radio_device_t, cont_flag: c_int);
   fn radio_verify_config(device: *const radio_device_t);
   fn radio_print_version(device: *const radio_device_t, stdout: *const libc::FILE);
@@ -116,9 +113,20 @@ pub fn disconnect() {
 }
 
 /// Read firmware image from the device
-pub fn download(device: *const radio_device_t) {
+pub fn download(device: *const radio_device_t, trace: bool) {
+
+  if !trace {
+    eprint!("Read device: ");
+  }
+
   unsafe {
-    radio_download(device)
+    let download_fn = (*device).download.unwrap();
+    let device_mut = device as *mut radio_device_t;
+    download_fn(device_mut);
+  }
+
+  if !trace {
+    eprintln!(" done.");
   }
 }