diff --git a/Src/main.c b/Src/main.c
index f095d0a..ef9e327 100644
--- a/Src/main.c
+++ b/Src/main.c
@@ -79,6 +79,7 @@ int main(void)
   pcan_timestamp_init();
   
   pcan_led_init();
+  pcan_led_set_mode( LED_STAT, LED_MODE_BLINK_FAST, 0xFFFFFFFF );
   pcan_protocol_init();
 #if ( INCLUDE_LIN_INTERFACE == 1 )
   plin_protocol_init();
diff --git a/Src/pcanpro_can.c b/Src/pcanpro_can.c
index d659ba6..2c1dce7 100644
--- a/Src/pcanpro_can.c
+++ b/Src/pcanpro_can.c
@@ -316,7 +316,7 @@ int pcan_can_init_ex( int bus, uint32_t bitrate )
   p_can->Init.TimeTriggeredMode = DISABLE;
   p_can->Init.AutoBusOff = ENABLE;
   p_can->Init.AutoWakeUp = ENABLE;
-  /* do resend packets ! */
+
   p_can->Init.AutoRetransmission = DISABLE;
   p_can->Init.ReceiveFifoLocked = DISABLE;
   p_can->Init.TransmitFifoPriority = ENABLE;
@@ -381,9 +381,11 @@ void pcan_can_set_bus_active( int bus, uint16_t mode )
   if( mode )
   {
     HAL_CAN_Start( p_can );
+    HAL_CAN_AbortTxRequest( p_can, CAN_TX_MAILBOX0 | CAN_TX_MAILBOX1 | CAN_TX_MAILBOX2 );
   }
   else
   {
+    HAL_CAN_AbortTxRequest( p_can, CAN_TX_MAILBOX0 | CAN_TX_MAILBOX1 | CAN_TX_MAILBOX2 );
     HAL_CAN_Stop( p_can );
   }
 }
diff --git a/Src/pcanpro_fd_protocol.c b/Src/pcanpro_fd_protocol.c
index a4c911b..db333a5 100644
--- a/Src/pcanpro_fd_protocol.c
+++ b/Src/pcanpro_fd_protocol.c
@@ -203,7 +203,7 @@ void pcan_ep0_receive( void )
     pcan_flush_ep( PCAN_USB_EP_MSGIN_CH1 );
     pcan_flush_ep( PCAN_USB_EP_CMDIN );
     pcan_device.can_drv_loaded = drv_load_packet[1];
-    pcan_led_set_mode( LED_STAT, LED_MODE_ON, 0 );
+    pcan_led_set_mode( LED_STAT, LED_MODE_BLINK_SLOW, 0xFFFFFFFF );
   }
   else
     pcan_device.lin_drv_loaded = drv_load_packet[1];
@@ -335,7 +335,7 @@ int pcan_protocol_tx_frame( struct ucan_tx_msg *pmsg )
     msg.flags |= MSG_FLAG_RTR;
   if( pmsg->flags & UCAN_MSG_EXT_ID )
     msg.flags |= MSG_FLAG_EXT;
-  if( pmsg->flags & (UCAN_MSG_API_SRR|UCAN_MSG_HW_SRR) )
+  if( pmsg->flags & (/*UCAN_MSG_API_SRR|*/UCAN_MSG_HW_SRR) )
   {
     msg.flags |= MSG_FLAG_ECHO;
     msg.dummy = pmsg->client;
diff --git a/Src/pcanpro_protocol.c b/Src/pcanpro_protocol.c
index ef83566..3c2cf78 100644
--- a/Src/pcanpro_protocol.c
+++ b/Src/pcanpro_protocol.c
@@ -243,6 +243,7 @@ void pcan_ep0_receive( void )
   {
     pcan_flush_ep( PCAN_USB_EP_MSGIN_CH1 );
     pcan_flush_ep( PCAN_USB_EP_CMDIN );
+    pcan_led_set_mode( LED_STAT, LED_MODE_BLINK_SLOW, 0xFFFFFFFF );
   }
   else
   {
diff --git a/Src/pcanpro_timestamp.c b/Src/pcanpro_timestamp.c
index 0a5baa7..9f09212 100644
--- a/Src/pcanpro_timestamp.c
+++ b/Src/pcanpro_timestamp.c
@@ -33,6 +33,10 @@ void pcan_timestamp_init( void )
       assert( 0 );
     break;
   }
+
+  //HAL_GetTick must not return 0 to use LED events in early stage.
+  //Let's increment the value here by one.
+  HAL_IncTick();
 }
 
 uint32_t pcan_timestamp_millis( void )