diff --git a/Class/DFU/Src/usbd_dfu.c b/Class/DFU/Src/usbd_dfu.c
index 98bdf49..d71c378 100644
--- a/Class/DFU/Src/usbd_dfu.c
+++ b/Class/DFU/Src/usbd_dfu.c
@@ -1095,7 +1095,6 @@ static void DFU_Leave(USBD_HandleTypeDef *pdev)
   }
   else
   {
-
     hdfu->dev_state = DFU_STATE_MANIFEST_WAIT_RESET;
 
     hdfu->dev_status[1] = 0U;
@@ -1112,8 +1111,7 @@ static void DFU_Leave(USBD_HandleTypeDef *pdev)
     /* Generate system reset to allow jumping to the user code */
     NVIC_SystemReset();
 
-    /* This instruction will not be reached (system reset) */
-    for(;;){}
+    /* The next instructions will not be reached (system reset) */
   }
 }
 
diff --git a/README.md b/README.md
index a92107c..3d45553 100644
--- a/README.md
+++ b/README.md
@@ -40,6 +40,7 @@ Note that:
 USB Device | HAL |
 ---------- | ---------- |
 Tag v2.5.1 | Tag v1.10.2 ([stm32l0xx_hal_driver](https://github.com/STMicroelectronics/stm32l0xx_hal_driver))
+Tag v2.5.2 | Tag v1.4.0 ([stm32l1xx_hal_driver](https://github.com/STMicroelectronics/stm32l1xx_hal_driver))
 
 ## Troubleshooting
 
diff --git a/Release_Notes.html b/Release_Notes.html
index d986789..5fcce53 100644
--- a/Release_Notes.html
+++ b/Release_Notes.html
@@ -923,7 +923,31 @@ ul
    <tbody><tr style="">
     <td style="padding: 0in;" valign="top">
     <h2 style="background: rgb(51, 102, 255) none repeat scroll 0% 50%; -moz-background-clip: initial; -moz-background-origin: initial; -moz-background-inline-policy: initial;"><a name="History"></a><span style="font-size: 12pt; color: white;">Update History</span></h2>
-            <h3 style="background: rgb(51, 102, 255) none repeat scroll 0% 50%; -moz-background-clip: initial; -moz-background-origin: initial; -moz-background-inline-policy: initial; margin-right: 500pt; width: 180px;"><span style="font-size: 10pt; font-family: Arial; color: white;">V2.5.1 / 03-August-2018<br>
+            <h3 style="background: rgb(51, 102, 255) none repeat scroll 0% 50%; -moz-background-clip: initial; -moz-background-origin: initial; -moz-background-inline-policy: initial; margin-right: 500pt; width: 180px;"><span style="font-size: 10pt; font-family: Arial; color: white;">V2.5.2 / 27-Mars-2019</span></h3><p class="MsoNormal" style="margin: 4.5pt 0cm 4.5pt 18pt;"><b style=""><u><span style="font-size: 10pt; font-family: Verdana; color: black;">Main
+Changes</span></u></b><u><span style="font-size: 10pt; font-family: Verdana; color: black;"><o:p></o:p></span></u></p>
+
+
+
+
+
+
+
+
+
+
+
+            
+            
+            
+            
+            
+            
+            
+            
+            
+            
+            <ul style="margin-top: 0cm;" type="square"><li><span style="font-family: Verdana; font-size: 10pt;">DFU Class:</span></li><ul><li><span style="font-family: Verdana; font-size: 10pt;"></span><span style="font-size: 10pt; font-family: &quot;Verdana&quot;,sans-serif;" lang="EN-US"></span><span style="font-family: Verdana; font-size: 10pt;"></span>fix compilation warning due to&nbsp;<span style="font-size: 11pt; font-family: &quot;Calibri&quot;,sans-serif;" lang="EN-US">unreachable
+</span> instruction code introduced with CMSIS V5.4.0 NVIC_SystemReset() prototype change</li></ul></ul><h3 style="background: rgb(51, 102, 255) none repeat scroll 0% 50%; -moz-background-clip: initial; -moz-background-origin: initial; -moz-background-inline-policy: initial; margin-right: 500pt; width: 180px;"><span style="font-size: 10pt; font-family: Arial; color: white;">V2.5.1 / 03-August-2018<br>
 </span></h3>