diff --git a/inc/at_device.h b/inc/at_device.h
index c0d1f85..86b3360 100644
--- a/inc/at_device.h
+++ b/inc/at_device.h
@@ -40,8 +40,8 @@ extern "C" {
 #include <netdev.h>
 #endif /* RT_USING_NETDEV */
 
-#define AT_DEVICE_SW_VERSION           "2.0.3"
-#define AT_DEVICE_SW_VERSION_NUM       0x20003
+#define AT_DEVICE_SW_VERSION           "2.0.2"
+#define AT_DEVICE_SW_VERSION_NUM       0x20002
 
 /* AT device class ID */
 #define AT_DEVICE_CLASS_ESP8266        0x01U