diff --git a/include/gsml1const.h b/include/gsml1const.h
index f4f5119..0653006 100644
--- a/include/gsml1const.h
+++ b/include/gsml1const.h
@@ -141,8 +141,9 @@ typedef enum GsmL1_Status_t
     GsmL1_Status_TxBurstFifoUndr    =  -21, ///< Fifo underrun
     GsmL1_Status_NotSynchronized    =  -22, ///< Not synchronized
     GsmL1_Status_Unsupported        =  -23, ///< Unsupported feature
+    GsmL1_Status_ClockError         =  -24, ///< System clock error
 
-    GSML1_STATUS_NUM                =   24
+    GSML1_STATUS_NUM                =   25
 
 } GsmL1_Status_t;
 
@@ -183,7 +184,8 @@ typedef enum GsmL1_DevType_t
     GsmL1_DevType_Rxd    = 0x01,    ///< Monitor type (RX downlink only)
     GsmL1_DevType_Rxu    = 0x02,    ///< Monitor type (RX uplink only)
     GsmL1_DevType_Txd    = 0x04,    ///< Jammer type (TX downlink only)
-    GsmL1_DevType_Txu    = 0x08     ///< Jammer type (TX uplink only)
+    GsmL1_DevType_Txu    = 0x08,    ///< Jammer type (TX uplink only)
+    GsmL1_DevType_TxuRxu = 0x0A     ///< Loopback type (TX uplink with downlink frame format, Rx uplink)
 
 } GsmL1_DevType_t;
 
diff --git a/include/superfemto.h b/include/superfemto.h
index 8db9104..d481723 100644
--- a/include/superfemto.h
+++ b/include/superfemto.h
@@ -13,7 +13,7 @@
 #include "gsml1const.h"
 
 #define SUPERFEMTO_API(x,y,z)    ((x << 16) | (y << 8) | z)
-#define SUPERFEMTO_API_VERSION   SUPERFEMTO_API(3,11,0)
+#define SUPERFEMTO_API_VERSION   SUPERFEMTO_API(5,1,0)
 
 /****************************************************************************
  *                                   Const                                  *
@@ -386,7 +386,12 @@ typedef struct SuperFemto_GetTxCalibTblCnf
                                                 for GSM-850 : 0=128, 1:129, ..., 123:251, [124-373]:unused
                                                 for GSM-900 : 0=955, 1:956, ...,  70:1, ..., 317:956, [318-373]:unused
                                                 for DCS-1800: 0=512, 1:513, ..., 373:885
-                                                for PCS-1900: 0=512, 1:513, ..., 298:810, [299-373]:unused */                                                 
+                                                for PCS-1900: 0=512, 1:513, ..., 298:810, [299-373]:unused */
+
+	uint8_t u8DspMajVer;           	///< DSP firmware major version (0 if unkown)
+	uint8_t u8DspMinVer;           	///< DSP firmware minor version (0 if unkown)
+	uint8_t u8FpgaMajVer;          	///< FPGA firmware major version (0 if unkown)
+	uint8_t u8FpgaMinVer;          	///< FPGA firmware minor version (0 if unkown)
 } SuperFemto_GetTxCalibTblCnf_t;
 
 /****************************************************************************
@@ -411,7 +416,12 @@ typedef struct SuperFemto_SetTxCalibTblReq
                                                 for GSM-850 : 0=128, 1:129, ..., 123:251, [124-373]:unused
                                                 for GSM-900 : 0=955, 1:956, ...,  70:1, ..., 317:956, [318-373]:unused
                                                 for DCS-1800: 0=512, 1:513, ..., 373:885
-                                                for PCS-1900: 0=512, 1:513, ..., 298:810, [299-373]:unused */                                                   
+                                                for PCS-1900: 0=512, 1:513, ..., 298:810, [299-373]:unused */
+
+    uint8_t u8DspMajVer;           	///< DSP firmware major version (0 if unkown)
+    uint8_t u8DspMinVer;           	///< DSP firmware minor version (0 if unkown)
+    uint8_t u8FpgaMajVer;          	///< FPGA firmware major version (0 if unkown)
+    uint8_t u8FpgaMinVer;          	///< FPGA firmware minor version (0 if unkown)
 } SuperFemto_SetTxCalibTblReq_t;
 
 /****************************************************************************
@@ -471,7 +481,12 @@ typedef struct SuperFemto_GetRxCalibTblCnf
                                                 for DCS-1800: 0=512, 1:513, ..., 373:885
                                                 for PCS-1900: 0=512, 1:513, ..., 298:810, [299-373]:unused */                                                
     uint8_t u8IqImbalMode;          ///< IQ imbalance mode (0:off, 1:on, 2:auto)
-    uint16_t u16IqImbalCorr[4];    ///< IQ imbalance compensation
+    uint16_t u16IqImbalCorr[4];    	///< IQ imbalance compensation
+
+    uint8_t u8DspMajVer;           	///< DSP firmware major version (0 if unkown)
+    uint8_t u8DspMinVer;           	///< DSP firmware minor version (0 if unkown)
+    uint8_t u8FpgaMajVer;          	///< FPGA firmware major version (0 if unkown)
+    uint8_t u8FpgaMinVer;          	///< FPGA firmware minor version (0 if unkown)
 } SuperFemto_GetRxCalibTblCnf_t;
 
 /****************************************************************************
@@ -499,7 +514,12 @@ typedef struct SuperFemto_SetRxCalibTblReq
                                                 for DCS-1800: 0=512, 1:513, ..., 373:885
                                                 for PCS-1900: 0=512, 1:513, ..., 298:810, [299-373]:unused */                                                
     uint8_t u8IqImbalMode;          ///< IQ imbalance mode (0:off, 1:on, 2:auto)
-    uint16_t u16IqImbalCorr[4];    ///< IQ imbalance compensation
+    uint16_t u16IqImbalCorr[4];    	///< IQ imbalance compensation
+
+    uint8_t u8DspMajVer;           	///< DSP firmware major version (0 if unkown)
+    uint8_t u8DspMinVer;           	///< DSP firmware minor version (0 if unkown)
+    uint8_t u8FpgaMajVer;          	///< FPGA firmware major version (0 if unkown)
+    uint8_t u8FpgaMinVer;          	///< FPGA firmware minor version (0 if unkown)
 } SuperFemto_SetRxCalibTblReq_t;
 
 /****************************************************************************