diff --git a/DSView/pv/sigsession.cpp b/DSView/pv/sigsession.cpp
index 63931863..1031fa1a 100644
--- a/DSView/pv/sigsession.cpp
+++ b/DSView/pv/sigsession.cpp
@@ -257,42 +257,53 @@ namespace pv
         // The current device changed.
         _callback->trigger_message(DSV_MSG_CURRENT_DEVICE_CHANGED);
 
-        if (ds_get_last_error() == SR_ERR_DEVICE_FIRMWARE_VERSION_LOW)
-        {
-            QString strMsg = L_S(STR_PAGE_MSG, S_ID(IDS_MSG_TO_RECONNECT_FOR_FIRMWARE), 
-                    "Please reconnect the device!");
-            _callback->delay_prop_msg(strMsg);
-            return false;
-        }
+        int lastError = ds_get_last_error();
+        bool ret = true;
 
-        if (ds_get_last_error() == SR_ERR_FIRMWARE_NOT_EXIST)
+        switch (lastError)
         {
-            QString strMsg = L_S(STR_PAGE_MSG, S_ID(IDS_MSG_FIRMWARE_NOT_EXIST), 
-                    "Firmware not exist!");
-            _callback->delay_prop_msg(strMsg);
-            return false;
-        }
-
-        if (ds_get_last_error() == SR_ERR_DEVICE_USB_IO_ERROR)
-        {
-            QString strMsg = L_S(STR_PAGE_MSG, S_ID(IDS_MSG_DEVICE_USB_IO_ERROR), 
-                    "USB io error!");
-            _callback->delay_prop_msg(strMsg);
-            return false;
-        }
-
-        if (ds_get_last_error() == SR_ERR_DEVICE_IS_EXCLUSIVE)
-        {
-            QString strMsg = L_S(STR_PAGE_MSG, S_ID(IDS_MSG_DEVICE_BUSY_SWITCH_FAILED), 
-                        "Device is busy!");
-            if (old_dev != NULL_HANDLE)
-                MsgBox::Show(strMsg);
-            else
+            case SR_ERR_DEVICE_FIRMWARE_VERSION_LOW:{
+                QString strMsg = L_S(STR_PAGE_MSG, S_ID(IDS_MSG_TO_RECONNECT_FOR_FIRMWARE), 
+                        "Please reconnect the device!");
                 _callback->delay_prop_msg(strMsg);
-            return false;
+                ret = false;
+                break;
+            }
+            case SR_ERR_FIRMWARE_NOT_EXIST:{
+                QString strMsg = L_S(STR_PAGE_MSG, S_ID(IDS_MSG_FIRMWARE_NOT_EXIST), 
+                    "Firmware not exist!");
+                _callback->delay_prop_msg(strMsg);
+                ret = false;
+                break;
+            }
+            case SR_ERR_DEVICE_USB_IO_ERROR:{
+                QString strMsg = L_S(STR_PAGE_MSG, S_ID(IDS_MSG_DEVICE_USB_IO_ERROR), 
+                    "USB io error!");
+                _callback->delay_prop_msg(strMsg);
+                ret = false;
+                break;
+            }
+            case SR_ERR_DEVICE_IS_EXCLUSIVE:{
+                QString strMsg = L_S(STR_PAGE_MSG, S_ID(IDS_MSG_DEVICE_BUSY_SWITCH_FAILED), 
+                        "Device is busy!");
+                if (old_dev != NULL_HANDLE)
+                    MsgBox::Show(strMsg);
+                else
+                    _callback->delay_prop_msg(strMsg);
+                ret = false;
+                break;
+            }
+            case SR_ERR_DEVICE_NO_DRIVER:
+            {
+                QString strMsg = L_S(STR_PAGE_MSG, S_ID(IDS_MSG_DEVICE_NO_DRIVER), 
+                    "No driver!");
+                _callback->delay_prop_msg(strMsg);
+                ret = false;
+                break;
+            }
         }
 
-        return true;
+        return ret;
     }
 
     bool SigSession::set_file(QString name)
diff --git a/lang/cn/msg.json b/lang/cn/msg.json
index 598f3b44..3ba7ab6a 100644
--- a/lang/cn/msg.json
+++ b/lang/cn/msg.json
@@ -354,6 +354,10 @@
         "id": "IDS_MSG_DEVICE_BUSY_SWITCH_FAILED",
         "text": "设备被其它程序占用，切换失败!"
     },
+    {
+        "id": "IDS_MSG_DEVICE_NO_DRIVER",
+        "text": "设备的驱动可能未安装!"
+    },
     {
         "id": "IDS_MSG_NO_ENABLED_CHANNEL",
         "text": "未启用通道!"
diff --git a/lang/en/msg.json b/lang/en/msg.json
index 83f92942..42610cc5 100644
--- a/lang/en/msg.json
+++ b/lang/en/msg.json
@@ -355,6 +355,10 @@
         "id": "IDS_MSG_DEVICE_BUSY_SWITCH_FAILED",
         "text": "The device is busy, switch failed!"
     },
+    {
+        "id": "IDS_MSG_DEVICE_NO_DRIVER",
+        "text": "The device driver may not be installed!"
+    },
     {
         "id": "IDS_MSG_NO_ENABLED_CHANNEL",
         "text": "No channels enabled!"
diff --git a/libsigrok4DSL/hardware/DSL/dsl.c b/libsigrok4DSL/hardware/DSL/dsl.c
index 38ffde67..319a5387 100644
--- a/libsigrok4DSL/hardware/DSL/dsl.c
+++ b/libsigrok4DSL/hardware/DSL/dsl.c
@@ -335,7 +335,11 @@ static int hw_dev_open(struct sr_dev_driver *di, struct sr_dev_inst *sdi)
     if (ret != LIBUSB_SUCCESS){
         sr_err("%s:%d, Failed to open device: %s, handle:%p",
                 __func__, __LINE__, libusb_error_name(ret), dev_handel);
-        ds_set_last_error(SR_ERR_DEVICE_IS_EXCLUSIVE);
+        
+        if (ret == LIBUSB_ERROR_NOT_SUPPORTED)
+            ds_set_last_error(SR_ERR_DEVICE_NO_DRIVER);
+        else
+            ds_set_last_error(SR_ERR_DEVICE_IS_EXCLUSIVE);
         return SR_ERR;
     }
     //sr_info("------------Open returns the libusb_device_handle: %p, struct:%p", usb->devhdl, usb);
diff --git a/libsigrok4DSL/libsigrok.h b/libsigrok4DSL/libsigrok.h
index 4487aea2..7b3550ef 100644
--- a/libsigrok4DSL/libsigrok.h
+++ b/libsigrok4DSL/libsigrok.h
@@ -80,7 +80,8 @@ enum {
 	SR_ERR_FIRMWARE_NOT_EXIST 	= 10, /**< The firmware file is not exist.*/
 	SR_ERR_DEVICE_IS_EXCLUSIVE 	= 11, /**< The device is exclusive by other process.*/
 	SR_ERR_DEVICE_FIRMWARE_VERSION_LOW = 12, /**< The firmware version is too low.*/
-	SR_ERR_DEVICE_USB_IO_ERROR = 13, /**< THe use io error.*/
+	SR_ERR_DEVICE_USB_IO_ERROR = 13, /**< The usb io error.*/
+	SR_ERR_DEVICE_NO_DRIVER = 14, /**< The device have no driver.*/
 
 	/*
 	 * Note: When adding entries here, don't forget to also update the