diff --git a/Multiprotocol/Multi.txt b/Multiprotocol/Multi.txt
index 230c17b..20b41cb 100644
--- a/Multiprotocol/Multi.txt
+++ b/Multiprotocol/Multi.txt
@@ -45,7 +45,7 @@
 45,E01X,E012,E015,E016H
 46,V911S,V911S,E119
 47,GD00x,GD_V1,GD_V2
-48,V761
+48,V761,3CH,4CH
 49,KF606
 50,Redpine,Fast,Slow
 51,Potensic,A20
diff --git a/Multiprotocol/Multi_Names.ino b/Multiprotocol/Multi_Names.ino
index 19cc5cd..f767605 100644
--- a/Multiprotocol/Multi_Names.ino
+++ b/Multiprotocol/Multi_Names.ino
@@ -138,7 +138,7 @@ const char STR_SUBTYPE_FRSKYL[] =     "\x08""LR12\0   ""LR12 6ch";
 const char STR_SUBTYPE_WFLY[] =       "\x06""WFR0xS";
 const char STR_SUBTYPE_HOTT[] =       "\x07""Sync\0  ""No_Sync";
 const char STR_SUBTYPE_PELIKAN[] =    "\x04""Pro\0""Lite";
-const char STR_SUBTYPE_V761[] =       "\x07""Std\0   ""Eachine";
+const char STR_SUBTYPE_V761[] =       "\x03""3CH""4CH";
 
 enum
 {
diff --git a/Multiprotocol/Multiprotocol.h b/Multiprotocol/Multiprotocol.h
index c651916..4257036 100644
--- a/Multiprotocol/Multiprotocol.h
+++ b/Multiprotocol/Multiprotocol.h
@@ -19,7 +19,7 @@
 #define VERSION_MAJOR		1
 #define VERSION_MINOR		3
 #define VERSION_REVISION	1
-#define VERSION_PATCH_LEVEL	23
+#define VERSION_PATCH_LEVEL	24
 
 //******************
 // Protocols
@@ -377,8 +377,8 @@ enum PELIKAN
 
 enum V761
 {
-	V761_STD	= 0,
-	V761_EACHINE= 1,
+	V761_3CH	= 0,
+	V761_4CH	= 1,
 };
 
 #define NONE 		0
@@ -974,8 +974,8 @@ Serial: 100000 Baud 8e2      _ xxxx xxxx p --
 			PELIKAN_PRO		0
 			PELIKAN_LITE	1
 		sub_protocol==V761
-			V761_STD		0
-			V761_EACHINE	1
+			V761_3CH	0
+			V761_4CH	1
 
    Power value => 0x80	0=High/1=Low
   Stream[3]   = option_protocol;
diff --git a/Multiprotocol/V761_nrf24l01.ino b/Multiprotocol/V761_nrf24l01.ino
index 6142341..f29b581 100644
--- a/Multiprotocol/V761_nrf24l01.ino
+++ b/Multiprotocol/V761_nrf24l01.ino
@@ -53,6 +53,8 @@ static void __attribute__((unused)) V761_set_checksum()
 
 static void __attribute__((unused)) V761_send_packet()
 {
+	static bool calib=false, prev_ch6=false;
+	
 	if(phase != V761_DATA)
 	{
 		packet[0] = rx_tx_addr[0];
@@ -69,7 +71,7 @@ static void __attribute__((unused)) V761_send_packet()
 		packet[0] = convert_channel_8b(THROTTLE);		// Throttle
 		packet[2] = convert_channel_8b(ELEVATOR)>>1;	// Elevator
 
-		if(sub_protocol==V761_STD)
+		if(sub_protocol==V761_3CH)
 		{
 			packet[1] = convert_channel_8b(RUDDER)>>1;	// Rudder
 			packet[3] = convert_channel_8b(AILERON)>>1;	// Aileron
@@ -81,9 +83,8 @@ static void __attribute__((unused)) V761_send_packet()
 		}
 
 		packet[5] = (packet_count++ / 3)<<6;
-		packet[4] = (packet[5] == 0x40) ? 0x1a : 0x20;
+		packet[4] = (packet[5] == 0x40) ? 0x1a : 0x20;	// ?
 
-		// Channel 5 - Gyro mode is packet 5
 		if(CH5_SW)										// Mode Expert Gyro off
 			flags = 0x0c;
 		else
@@ -91,14 +92,20 @@ static void __attribute__((unused)) V761_send_packet()
 				flags = 0x08;							// Beginer mode (Gyro on, yaw and pitch rate limited)
 			else
 				flags = 0x0a;							// Mid Mode ( Gyro on no rate limits)        
+
+		if(!prev_ch6 && CH6_SW)							// -100% -> 100% launch gyro calib
+			calib=!calib;
+		prev_ch6 = CH6_SW;
+		if(calib)
+			flags |= 0x01;								// Gyro calibration
+
 		packet[5] |= flags;
-		if(sub_protocol==V761_STD)
-			packet[6] = 0x80;							// unknown
-		else
-		{
-			packet[6] = GET_FLAG(CH5_SW, 0x20); 		// Flip
-														// RTH???
-		}
+
+		packet[6] =  GET_FLAG(CH7_SW, 0x20) 			// Flip
+					|GET_FLAG(CH8_SW, 0x08)				// RTH activation
+					|GET_FLAG(CH9_SW, 0x10);			// RTH on/off
+		if(sub_protocol==V761_3CH)
+			packet[6] |= 0x80;							// unknown, set on original V761-1 dump but not on eachine dumps, keeping for compatibility
 
 		//packet counter
 		if(packet_count >= 12)
@@ -136,22 +143,30 @@ static void __attribute__((unused)) V761_init()
 
 static void __attribute__((unused)) V761_initialize_txid()
 {
-	// TODO: try arbitrary rx_tx_addr & frequencies (except hopping_frequency[0])
-	switch(RX_num%3)
+	switch(RX_num%5)
 	{
 		case 1:	//Dump from air on Protonus TX
 			memcpy(rx_tx_addr,(uint8_t *)"\xE8\xE4\x45\x09",4);
-			memcpy(hopping_frequency,(uint8_t *)"\x0D\x21\x44",3);
+			memcpy(hopping_frequency,(uint8_t *)"\x0D\x21",2);
 			break;
 		case 2:	//Dump from air on mshagg2 TX
 			memcpy(rx_tx_addr,(uint8_t *)"\xAE\xD1\x45\x09",4);
-			memcpy(hopping_frequency,(uint8_t *)"\x13\x1D\x4A",3);
+			memcpy(hopping_frequency,(uint8_t *)"\x13\x1D",2);
+			break;
+		case 3:	//Dump from air on MikeHRC Eachine TX
+			memcpy(rx_tx_addr,(uint8_t *)"\x08\x03\x00\xA0",4);		// To be checked
+			memcpy(hopping_frequency,(uint8_t *)"\x0D\x21",2);		// To be checked
+			break;
+		case 4:	//Dump from air on Crashanium Eachine TX
+			memcpy(rx_tx_addr,(uint8_t *)"\x58\x08\x00\xA0",4);		// To be checked
+			memcpy(hopping_frequency,(uint8_t *)"\x0D\x31",3);		// To be checked
 			break;
 		default: //Dump from SPI
 			memcpy(rx_tx_addr,(uint8_t *)"\x6f\x2c\xb1\x93",4);
-			memcpy(hopping_frequency,(uint8_t *)"\x14\x1e\x4b",3);
+			memcpy(hopping_frequency,(uint8_t *)"\x14\x1e",3);
 			break;
 	}
+	hopping_frequency[2]=hopping_frequency[0]+0x37;
 }
 
 uint16_t V761_callback()
@@ -201,10 +216,14 @@ uint16_t V761_callback()
 
 uint16_t initV761(void)
 {
-	BIND_IN_PROGRESS;
-	bind_counter = V761_BIND_COUNT;
 	V761_initialize_txid();
-	phase = V761_BIND1;
+	if(IS_BIND_IN_PROGRESS)
+	{
+		bind_counter = V761_BIND_COUNT;
+		phase = V761_BIND1;
+	}
+	else
+		phase = V761_DATA;
 	V761_init();
 	hopping_frequency_no = 0;
 	packet_count = 0;
diff --git a/Multiprotocol/_Config.h b/Multiprotocol/_Config.h
index 2209b62..69740c6 100644
--- a/Multiprotocol/_Config.h
+++ b/Multiprotocol/_Config.h
@@ -715,8 +715,8 @@ const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 		JXD506
 		V2X2_MR101
 	PROTO_V761
-		V761_STD
-		V761_EACHINE
+		V761_3CH
+		V761_4CH
 	PROTO_V911S
 		V911S_STD
 		V911S_E119