diff --git a/armsrc/mifarecmd.c b/armsrc/mifarecmd.c
index 2a21ac486..884da9132 100644
--- a/armsrc/mifarecmd.c
+++ b/armsrc/mifarecmd.c
@@ -305,7 +305,7 @@ void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 	}
 
 	for (int i = 0; i < blocks; i++){
-		if ((i*4) + 4 > CARD_MEMORY_SIZE) {
+		if ((i*4) + 4 >= CARD_MEMORY_SIZE) {
 			Dbprintf("Data exceeds buffer!!");
 			break;
 		}
@@ -337,16 +337,11 @@ void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 	if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Blocks read %d", countblocks);
 
 	countblocks *= 4;
-/*
-	LED_B_ON();
-	for(size_t i=0; i < countblocks; i += USB_CMD_DATA_SIZE) {
-		size_t len = MIN((countblocks - i),USB_CMD_DATA_SIZE);
-		cmd_send(CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K,i,len,countblocks,dataout+i,len);
-	}
-*/
+
 	cmd_send(CMD_ACK, 1, countblocks, BigBuf_max_traceLen(), 0, 0);
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 	LEDsoff();
+	BigBuf_free();
 }
 
 //-----------------------------------------------------------------------------
diff --git a/client/cmdhfmfu.c b/client/cmdhfmfu.c
index 057708cac..5d211558e 100644
--- a/client/cmdhfmfu.c
+++ b/client/cmdhfmfu.c
@@ -102,17 +102,20 @@ char *getUlev1CardSizeStr( uint8_t fsize ){
 
 static void ul_switch_on_field(void) {
 	UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_CONNECT | ISO14A_NO_DISCONNECT, 0, 0}};
+	clearCommandBuffer();
 	SendCommand(&c);
 }
 
 void ul_switch_off_field(void) {
 	UsbCommand c = {CMD_READER_ISO_14443a, {0, 0, 0}};
+	clearCommandBuffer();
 	SendCommand(&c);
 }
 
 static int ul_send_cmd_raw( uint8_t *cmd, uint8_t cmdlen, uint8_t *response, uint16_t responseLength ) {
 	UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_RAW | ISO14A_NO_DISCONNECT | ISO14A_APPEND_CRC, cmdlen, 0}};
 	memcpy(c.d.asBytes, cmd, cmdlen);
+	clearCommandBuffer();
 	SendCommand(&c);
 	UsbCommand resp;
 	if (!WaitForResponseTimeout(CMD_ACK, &resp, 1500)) return -1;
@@ -129,6 +132,7 @@ static int ul_send_cmd_raw_crc( uint8_t *cmd, uint8_t cmdlen, uint8_t *response,
 		c.arg[0] |= ISO14A_APPEND_CRC;
 
 	memcpy(c.d.asBytes, cmd, cmdlen);	
+	clearCommandBuffer();
 	SendCommand(&c);
 	UsbCommand resp;
 	if (!WaitForResponseTimeout(CMD_ACK, &resp, 1500)) return -1;
@@ -193,6 +197,7 @@ static int ulc_authentication( uint8_t *key, bool switch_off_field ){
 
 	UsbCommand c = {CMD_MIFAREUC_AUTH, {switch_off_field}};
 	memcpy(c.d.asBytes, key, 16);
+	clearCommandBuffer();
 	SendCommand(&c);
 	UsbCommand resp;
 	if ( !WaitForResponseTimeout(CMD_ACK, &resp, 1500) ) return 0;
@@ -955,6 +960,7 @@ int CmdHF14AMfUWrBl(const char *Cmd){
 		memcpy(c.d.asBytes+4,authKeyPtr,4);
 	}
 
+	clearCommandBuffer();
 	SendCommand(&c);
 	UsbCommand resp;
 	if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
@@ -1065,13 +1071,16 @@ int CmdHF14AMfURdBl(const char *Cmd){
 		memcpy(c.d.asBytes,authKeyPtr,4);
 	}
 
+	clearCommandBuffer();
 	SendCommand(&c);
 	UsbCommand resp;
 	if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
 		uint8_t isOK = resp.arg[0] & 0xff;
 		if (isOK) {
 			uint8_t *data = resp.d.asBytes;
-			PrintAndLog("Block: %0d (0x%02X) [ %s]", blockNo, blockNo, sprint_hex(data, 4));
+			PrintAndLog("\nBlock#  | Data        | Ascii");
+			PrintAndLog("-----------------------------");
+			PrintAndLog("%02d/0x%02X | %s| %.4s\n", blockNo, blockNo, sprint_hex(data, 4), data);
 		}
 		else {
 			PrintAndLog("Failed reading block: (%02x)", isOK);
@@ -1256,6 +1265,8 @@ int CmdHF14AMfUDump(const char *Cmd){
 
 		memcpy(c.d.asBytes, authKeyPtr, dataLen);
 	}
+
+	clearCommandBuffer();
 	SendCommand(&c);
 	UsbCommand resp;
 	if (!WaitForResponseTimeout(CMD_ACK, &resp,1500)) {
@@ -1314,11 +1325,11 @@ int CmdHF14AMfUDump(const char *Cmd){
 		}
 	}
 
-	PrintAndLog("Block#  | Data        |lck| Ascii");
+	PrintAndLog("\nBlock#  | Data        |lck| Ascii");
 	PrintAndLog("---------------------------------");
 	for (i = 0; i < Pages; ++i) {
 		if ( i < 3 ) {
-			PrintAndLog("%02d/0x%02X | %s |   | ", i, i, sprint_hex(data + i * 4, 4));
+			PrintAndLog("%02d/0x%02X | %s|   | ", i+startPage, i+startPage, sprint_hex(data + i * 4, 4));
 			continue;
 		}
 		switch(i){
@@ -1365,10 +1376,10 @@ int CmdHF14AMfUDump(const char *Cmd){
 			case 43: tmplockbit = bit2[9]; break;  //auth1
 			default: break;
 		}
-		PrintAndLog("%02d/0x%02X | %s | %d | %.4s", i, sprint_hex(data + i * 4, 4), tmplockbit, data+i*4);
+		PrintAndLog("%02d/0x%02X | %s| %d | %.4s", i+startPage, i+startPage, sprint_hex(data + i * 4, 4), tmplockbit, data+i*4);
 	}
 	PrintAndLog("---------------------------------");
-	
+
 	// user supplied filename?
 	if (fileNlen < 1) {
 		// UID = data 0-1-2 4-5-6-7  (skips a beat)
@@ -1558,6 +1569,7 @@ int CmdHF14AMfucSetPwd(const char *Cmd){
 	
 	UsbCommand c = {CMD_MIFAREUC_SETPWD};	
 	memcpy( c.d.asBytes, pwd, 16);
+	clearCommandBuffer();
 	SendCommand(&c);
 
 	UsbCommand resp;
@@ -1606,6 +1618,7 @@ int CmdHF14AMfucSetUid(const char *Cmd){
 	// read block2. 
 	c.cmd = CMD_MIFAREU_READBL;
 	c.arg[0] = 2;
+	clearCommandBuffer();
 	SendCommand(&c);
 	if (!WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
 		PrintAndLog("Command execute timeout");
@@ -1623,6 +1636,7 @@ int CmdHF14AMfucSetUid(const char *Cmd){
 	c.d.asBytes[1] = uid[1];
 	c.d.asBytes[2] = uid[2];
 	c.d.asBytes[3] =  0x88 ^ uid[0] ^ uid[1] ^ uid[2];
+	clearCommandBuffer();
 	SendCommand(&c);
 	if (!WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
 		PrintAndLog("Command execute timeout");
@@ -1635,6 +1649,7 @@ int CmdHF14AMfucSetUid(const char *Cmd){
 	c.d.asBytes[1] = uid[4];
 	c.d.asBytes[2] = uid[5];
 	c.d.asBytes[3] = uid[6];
+	clearCommandBuffer();
 	SendCommand(&c);
 	if (!WaitForResponseTimeout(CMD_ACK,&resp,1500) ) {
 		PrintAndLog("Command execute timeout");
@@ -1647,6 +1662,7 @@ int CmdHF14AMfucSetUid(const char *Cmd){
 	c.d.asBytes[1] = oldblock2[1];
 	c.d.asBytes[2] = oldblock2[2];
 	c.d.asBytes[3] = oldblock2[3];
+	clearCommandBuffer();
 	SendCommand(&c);
 	if (!WaitForResponseTimeout(CMD_ACK,&resp,1500) ) {
 		PrintAndLog("Command execute timeout");