diff --git a/sw/deployer/src/debug.rs b/sw/deployer/src/debug.rs
index 3aacc91..9920f98 100644
--- a/sw/deployer/src/debug.rs
+++ b/sw/deployer/src/debug.rs
@@ -137,6 +137,11 @@ impl TryFrom<&[u8]> for Heartbeat {
     }
 }
 
+pub enum UserInput {
+    Packet(sc64::DebugPacket),
+    EOF,
+}
+
 macro_rules! success {
     ($($a: tt)*) => {
         println!("{}", format!($($a)*).bright_blue());
@@ -164,11 +169,11 @@ impl Handler {
         self.encoding = encoding;
     }
 
-    pub fn process_user_input(&self) -> Option<sc64::DebugPacket> {
-        let line = match self.line_rx.try_recv() {
+    pub fn process_user_input(&self) -> Option<UserInput> {
+        let raw_line = match self.line_rx.try_recv() {
             Ok(line) => {
                 if line.len() == 0 {
-                    return None;
+                    return Some(UserInput::EOF);
                 } else {
                     line
                 }
@@ -176,6 +181,11 @@ impl Handler {
             Err(_) => return None,
         };
 
+        let line = raw_line.trim_end();
+        if line.len() == 0 {
+            return None;
+        }
+
         let token_count = line.matches("@").count();
 
         if (token_count % 2) != 0 {
@@ -235,7 +245,7 @@ impl Handler {
             );
         }
 
-        Some(packet)
+        Some(UserInput::Packet(packet))
     }
 
     pub fn handle_debug_packet(&mut self, debug_packet: sc64::DebugPacket) {
@@ -419,7 +429,7 @@ fn stdin_thread(line_tx: Sender<String>) {
     loop {
         let mut line = String::new();
         if stdin().read_line(&mut line).is_ok() {
-            if line_tx.send(line.trim_end().to_string()).is_err() {
+            if line_tx.send(line.to_string()).is_err() {
                 return;
             }
         }
diff --git a/sw/deployer/src/main.rs b/sw/deployer/src/main.rs
index 07af7a6..883353a 100644
--- a/sw/deployer/src/main.rs
+++ b/sw/deployer/src/main.rs
@@ -120,7 +120,6 @@ struct _64DDArgs {
     ddipl: PathBuf,
 
     /// Path to the 64DD disk file (.ndd format, can be specified multiple times)
-    #[arg(required = true)]
     disk: Vec<PathBuf>,
 
     /// Path to the ROM file
@@ -405,10 +404,11 @@ fn handle_64dd_command(connection: Connection, args: &_64DDArgs) -> Result<(), s
     let mut debug_handler = debug::new();
 
     println!(
-        "{}\n{}\n{}",
+        "{}\n{}\n{}\n{}",
         "========== [WARNING] ==========".bold().bright_yellow(),
         "Do not use this mode when real 64DD accessory is connected to the N64".bright_yellow(),
-        "Doing so might permanently damage either N64, 64DD or SC64".bright_yellow()
+        "Doing so might permanently damage either N64, 64DD or SC64".bright_yellow(),
+        "\"Only 64DD IPL\" mode should be safe on development units without IPL builtin".bright_green()
     );
 
     sc64.reset_state()?;
@@ -474,6 +474,13 @@ fn handle_64dd_command(connection: Connection, args: &_64DDArgs) -> Result<(), s
 
     sc64.calculate_cic_parameters()?;
 
+    if args.disk.len() == 0 {
+        let dd_mode = sc64::DdMode::DdIpl;
+        println!("64DD mode set to [{dd_mode}]");
+        sc64.configure_64dd(dd_mode, None)?;
+        return Ok(())
+    }
+
     let disk_paths: Vec<String> = args
         .disk
         .iter()
@@ -493,7 +500,7 @@ fn handle_64dd_command(connection: Connection, args: &_64DDArgs) -> Result<(), s
 
     let dd_mode = sc64::DdMode::Full;
     println!("64DD mode set to [{dd_mode} / {drive_type}]");
-    sc64.configure_64dd(dd_mode, drive_type)?;
+    sc64.configure_64dd(dd_mode, Some(drive_type))?;
 
     println!(
         "{}: {}",
@@ -587,8 +594,11 @@ fn handle_64dd_command(connection: Connection, args: &_64DDArgs) -> Result<(), s
                 }
                 _ => {}
             }
-        } else if let Some(debug_packet) = debug_handler.process_user_input() {
-            sc64.send_debug_packet(debug_packet)?;
+        } else if let Some(user_input) = debug_handler.process_user_input() {
+            match user_input {
+                debug::UserInput::Packet(debug_packet) => sc64.send_debug_packet(debug_packet)?,
+                debug::UserInput::EOF => break,
+            }
         }
     }
 
@@ -640,8 +650,11 @@ fn handle_debug_command(connection: Connection, args: &DebugArgs) -> Result<(),
                 }
                 _ => {}
             }
-        } else if let Some(debug_packet) = debug_handler.process_user_input() {
-            sc64.send_debug_packet(debug_packet)?;
+        } else if let Some(user_input) = debug_handler.process_user_input() {
+            match user_input {
+                debug::UserInput::Packet(debug_packet) => sc64.send_debug_packet(debug_packet)?,
+                debug::UserInput::EOF => break
+            }
         }
     }
 
diff --git a/sw/deployer/src/sc64/mod.rs b/sw/deployer/src/sc64/mod.rs
index ff99a29..cb4a85b 100644
--- a/sw/deployer/src/sc64/mod.rs
+++ b/sw/deployer/src/sc64/mod.rs
@@ -559,13 +559,15 @@ impl SC64 {
     pub fn configure_64dd(
         &mut self,
         dd_mode: DdMode,
-        drive_type: DdDriveType,
+        drive_type: Option<DdDriveType>,
     ) -> Result<(), Error> {
         self.command_config_set(Config::DdMode(dd_mode))?;
-        self.command_config_set(Config::DdSdEnable(Switch::Off))?;
-        self.command_config_set(Config::DdDriveType(drive_type))?;
-        self.command_config_set(Config::DdDiskState(DdDiskState::Ejected))?;
-        self.command_config_set(Config::ButtonMode(ButtonMode::UsbPacket))?;
+        if let Some(drive_type) = drive_type {
+            self.command_config_set(Config::DdSdEnable(Switch::Off))?;
+            self.command_config_set(Config::DdDriveType(drive_type))?;
+            self.command_config_set(Config::DdDiskState(DdDiskState::Ejected))?;
+            self.command_config_set(Config::ButtonMode(ButtonMode::UsbPacket))?;
+        }
         Ok(())
     }