diff --git a/main_gui.py b/main_gui.py
index f11d6a6..024efa4 100644
--- a/main_gui.py
+++ b/main_gui.py
@@ -595,7 +595,7 @@ def object_config_for_device(self):
         # WIZ5XX v1.0.8 이상은 modbus 사용 가능 #36
         else:
             self.modbus_protocol.setEnabled(True)
-        if "WIZ750" in self.curr_dev:
+        if "WIZ750" in self.curr_dev or "W232N" in self.curr_dev:
             if version_compare("1.2.0", self.curr_ver) <= 0:
                 # setcmd['TR'] = self.tcp_timeout.text()
                 self.tcp_timeout.setEnabled(True)
@@ -609,9 +609,16 @@ def object_config_for_device(self):
 
             # 20221208 Modify baud rate temperarily
             self.ch1_baud.removeItem(14)
+            self.ch1_baud.removeItem(15)
+        elif "W55RP20-S2E" in self.curr_dev:
+            # W55RP20-S2E의 경우 921600 baud rate 옵션 추가
+            if self.ch1_baud.count() == 15:
+                self.ch1_baud.insertItem(15, "921600")
         else:
             if self.ch1_baud.count() == 14:
                 self.ch1_baud.insertItem(14, "460800")
+                self.ch1_baud.removeItem(15)
+
 
         # SC: Status pin option
         if "WIZ107" in self.curr_dev or "WIZ108" in self.curr_dev:
@@ -3082,3 +3089,4 @@ def __del__(self):
     wizwindow = WIZWindow()
     wizwindow.show()
     app.exec_()
+
diff --git a/version b/version
index eac1e0a..b108c61 100644
--- a/version
+++ b/version
@@ -1 +1 @@
-1.5.6
+1.5.6.1
diff --git a/wizcmdset.py b/wizcmdset.py
index ea7b26b..453a010 100644
--- a/wizcmdset.py
+++ b/wizcmdset.py
@@ -27,7 +27,7 @@
     "LP": ["Local port number", port_pattern, {}, "RW"],
     "RH": ["Remote Host IP address", ip_pattern, {}, "RW"],
     "RP": ["Remote Host Port number", port_pattern, {}, "RW"],
-    "BR": ["UART Baud rate", "^([0-9]|1[0-4])$", baudrate_option, "RW"],
+    "BR": ["UART Baud rate", "^([0-9]|1[0-5])$", baudrate_option, "RW"],
     "DB": ["UART Data bit length", "^[0-1]$", {"0": "7-bit", "1": "8-bit"}, "RW"],
     "PR": ["UART Parity bit", "^[0-2]$", {"0": "NONE", "1": "ODD", "2": "EVEN"}, "RW"],
     "SB": ["UART Stop bit length", "^[0-1]$", {"0": "1-bit", "1": "2-bit"}, "RW"],
@@ -312,3 +312,4 @@ def iswritable(self, cmdstr):
     print(wizcmdset.getparamdescription(cmd, "2B2C2D"))
 
     print(wizcmdset.isvalidparameter(cmd, "192.168.11.3"))
+