diff --git a/network-comm/nic/wifi/ESP8266 ESP8266_SLIP_X26M_BETA20250225.bin b/network-comm/nic/wifi/ESP8266 ESP8266_SLIP_X26M_BETA20250225.bin
new file mode 100644
index 0000000..3ef7669
Binary files /dev/null and b/network-comm/nic/wifi/ESP8266 ESP8266_SLIP_X26M_BETA20250225.bin differ
diff --git a/network-comm/nic/wifi/WLAN.py b/network-comm/nic/wifi/WLAN.py
index 215be02..582eb5f 100644
--- a/network-comm/nic/wifi/WLAN.py
+++ b/network-comm/nic/wifi/WLAN.py
@@ -12,11 +12,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-# ************************************************************** #
+# ********************************************************************************************************************** #
 #   WHEN            WHO              WHAT, WHERE, WHY
-#   ----------      -----------      --------------------------  #
+# ********************************************************************************************************************** #
 #   23/01/2024      Francis          Add timeout handling
-# ************************************************************** #
+#   ----------      -----------      ----------------------------------------------------------------------------------  #
+#   06/08/2025      Sirius           Fix port occupation issue by adding socket release in stop function, retaining del
+# *********************************************************************************************************************  #
 
 import usocket
 import log
@@ -87,7 +89,7 @@ def __socket_reponse(self):
             return RET_CODE.RET_RESPONSE_ERROR_CODE
         return RET_CODE.RET_SUCCESS_CODE
 
-    # station模式
+	# station模式
     def station(self, user, password):
         self.clear_remain()
         __head = 'F3'
@@ -100,7 +102,7 @@ def station(self, user, password):
         self.__Socket_UDP(__head, self.__message)
         return self.__socket_reponse()
 
-    #ap 模式
+	#ap 模式
     def ap(self, user, password):
         self.clear_remain()
         __head = 'F2'
@@ -114,7 +116,7 @@ def ap(self, user, password):
         self.__Socket_UDP(__head, self.__message)
         return self.__socket_reponse()
 
-    # web配网模式
+	# web配网模式
     def web_config(self, user, password):
         self.clear_remain()
         __head = 'F0'
@@ -133,7 +135,7 @@ def clear_remain(self):
         self.__err = 0
         self.__value = None
 
-    # 查询网卡状态
+	# 查询网卡状态
     def status(self):
         self.clear_remain()
         self.__Socket_UDP('F1', '0')
@@ -165,7 +167,7 @@ def smartconfig(self, mode):
         self.__Socket_UDP(__head, self.__message)
         return self.__socket_reponse()
 
-    # 配置查询
+	# 配置查询
     def config(self, param):
         self.clear_remain()
         __head = 'F7'
@@ -175,13 +177,13 @@ def config(self, param):
             return RET_CODE.RET_TIMEOUT_CODE
         return self.__value[2]
 
-    #添加路由信息
+	#添加路由信息
     def router_add(self, ip='192.168.4.1', mask='255.255.255.0'):
         self.ip = ip
         self.mask = mask
         return slip.router_add('192.168.4.1', '255.255.255.0')
 
-    # 获取slip的网络配置
+	# 获取slip的网络配置
     def ipconfig(self):
         return slip.ipconfig()
 
@@ -202,13 +204,14 @@ def set_default_NIC(self, ip_str):
             return RET_CODE.RET_SUCCESS_CODE
         return RET_CODE.RET_PARAM_ERROR_CODE
     
-    # 释放slip网卡
+	# 释放slip网卡
     def stop(self):
         _thread.stop_thread(self.__threadid)
         slip.destroy()
+	self.__sock.close()#释放socket
         return RET_CODE.RET_SUCCESS_CODE
 
-    # 封装tlv数据包
+	# 封装tlv数据包
     def __pack_tlv_format(self, head, content):
         self.head = head
         self.content = content
@@ -218,7 +221,7 @@ def __pack_tlv_format(self, head, content):
         tlv_pack = self.head+len_str+self.content
         return tlv_pack
 
-    # 解码tlv数据包
+	# 解码tlv数据包
     def __unpack_tlv_format(self, msg):
         self.msg = str(msg)
         tag = self.msg[0:2]
@@ -229,8 +232,8 @@ def __unpack_tlv_format(self, msg):
             return RET_CODE.RET_RESPONSE_ERROR_CODE
         unpack = (tag,length,value)
         return unpack
-
-    # socket通信(UDP)模块
+	    
+	# socket通信(UDP)模块
     def __Socket_UDP(self, head, content):
         self.head = head
         self.content = content
@@ -248,8 +251,11 @@ def __Socket_UDP(self, head, content):
         data = self.__queue.get()
         self.__wait_resp = 0
         return data
-
-    # socket通信(UDP)模块
+    
+    def __def__(self):
+	self.stop()
+   
+	# socket通信(UDP)模块
     def __Socket_Thread(self):
         while True:
             try: