diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0f7e5d27f..ee2884572 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,7 +6,10 @@ This project uses the changelog in accordance with [keepchangelog](http://keepac
   - 
   - trace/securakey-64169.pm3 - trace of a scecurakey (atyppo)
   - 'hf mf decrypt' - got some longer input and helptext parameter (iceman)  
-
+  - Updated the Reveng 1.51 sourcecode to 1.52 from Reveng project homepage (iceman)
+  - 'hf 14a read' - disconnects when failing to read tag (iceman)
+  - 'hf mf csave' - renamed parameter 'i' to 'o' as in output (iceman)
+  
 ## [3.0.0][2017-08-29]
   Notes on this release
   this version includes a merge with the PM3 offical v3.0.1 code, a.k.a the "Monster merge"
diff --git a/armsrc/iclass.c b/armsrc/iclass.c
index 71de98f19..9db84a78d 100644
--- a/armsrc/iclass.c
+++ b/armsrc/iclass.c
@@ -715,7 +715,7 @@ static void iclass_setup_sniff(void){
 void RAMFUNC SniffIClass(void) {
 
 	uint8_t previous_data = 0;
-	int maxDataLen = 0,  datalen = 0; 
+	int maxDataLen = 0; //  datalen = 0; 
 	uint32_t time_0 = 0, time_start = 0, time_stop  = 0;
     uint32_t sniffCounter = 0;
 
@@ -834,7 +834,19 @@ void RAMFUNC SniffIClass(void) {
 		DbpString("Sniff statistics:");	
 		Dbprintf(" maxDataLen=%x, Uart.state=%x, Uart.byteCnt=%x", maxDataLen, Uart.state, Uart.byteCnt);
 		Dbprintf(" Tracelen=%x, Uart.output[0]=%x", BigBuf_get_traceLen(), (int)Uart.output[0]);
-		Dbhexdump(datalen, data, false);
+		Dbhexdump(ICLASS_DMA_BUFFER_SIZE, data, false);
+		uint8_t r[128] = {0}; 
+		uint8_t t[128] = {0};
+		uint16_t i;
+		uint8_t j;
+		for (i=0, j=0; i<ICLASS_DMA_BUFFER_SIZE; i += 2, j++) {
+			r[j] = (data[i] & 0xF0)  | (data[i+1] >> 4);
+			t[j] = (data[i] << 4) | (data[i+1] & 0xF);
+		}
+		DbpString("reader:");
+		Dbhexdump(sizeof(r), r, false);
+		DbpString("tag:");
+		Dbhexdump(sizeof(t), t, false);
 	}
 	
 	switch_off();