diff --git a/Multiprotocol/E129_cyrf6936.ino b/Multiprotocol/E129_cyrf6936.ino
index 8800a97..16c584c 100644
--- a/Multiprotocol/E129_cyrf6936.ino
+++ b/Multiprotocol/E129_cyrf6936.ino
@@ -18,15 +18,17 @@
 #include "iface_rf2500.h"
 
 //#define E129_FORCE_ID
+//#define C186_FORCE_ID
 
 #define E129_BIND_CH		0x2D	//45
 #define E129_PAYLOAD_SIZE	16
+#define C186_PAYLOAD_SIZE	19
 
 static void __attribute__((unused)) E129_build_data_packet()
 {
 	//Build the packet
-	memset(packet,0,E129_PAYLOAD_SIZE);
-	packet[ 0] = 0x0F;									// Packet length
+	memset(packet,0,packet_length);
+	packet[ 0] = packet_length - 1;						// Packet length
 	if(IS_BIND_IN_PROGRESS)
 	{
 		packet[ 1] = 0xA4;
@@ -40,11 +42,22 @@ static void __attribute__((unused)) E129_build_data_packet()
 	else
 	{
 		packet[ 1] = 0xA6;
-		packet[ 2] = 0xF7;								// High rate 0xF7, low rate 0xF4
-		//packet[ 3] = 0x00;							// Mode: short press=0x20->0x00->0x20->..., long press=0x10->0x30->0x10->...
+		//Flags
+		if(sub_protocol == E129_E129)
+			packet[ 2] = 0xF7;							// High rate 0xF7, low 0xF4
+		else //C186
+		{
+			packet[ 2] = 0xFA;							// High rate 0xFA, medium 0xF7, low 0xF4
+			packet[13] = bit_reverse(rx_tx_addr[2]);
+			packet[14] = bit_reverse(rx_tx_addr[3]);
+			packet[15] = bit_reverse(rx_tx_addr[0]);
+			packet[16] = bit_reverse(rx_tx_addr[1]);
+		}
+		//packet[ 3] = 0x00;							// E129 Mode: short press=0x20->0x00->0x20->..., long press=0x10->0x30->0x10->... => C186 throttle trim is doing the same:up=short press and down=long press
 		packet[ 4] = GET_FLAG(CH5_SW, 0x20)				// Take off/Land 0x20
-				| GET_FLAG(CH6_SW, 0x04);				// Emergency stop 0x04
+				   | GET_FLAG(CH6_SW, 0x04);			// Emergency stop 0x04
 		
+		//Channels and trims
 		uint16_t val = convert_channel_10b(AILERON,false);
 		uint8_t trim = convert_channel_8b(CH7) & 0xFC;
 		packet[ 5] = trim | (val >>8);					// Trim (0x00..0x1F..0x3E) << 2 | channel >> 8
@@ -67,10 +80,14 @@ static void __attribute__((unused)) E129_build_data_packet()
 		packet[11] = trim | (val >>8);					// Trim (0x00..0x1F..0x3E) << 2 | channel >> 8
 		packet[12] = val;								// channel (0x000...0x200...0x3FF)
 	}
-	packet[14] = 0x00;									// Check
-	for(uint8_t i=0;i<14;i++)
-		packet[14] += packet[i];
-	
+	//Check
+	if(sub_protocol == E129_E129)
+		packet[packet_length-2] = packet[0] + packet[1];
+	else
+		packet[packet_length-2] = 0x24 + packet[0] + (packet[1]&0x03);	// ??
+	for(uint8_t i=2;i<packet_length-2;i++)
+		packet[packet_length-2] += packet[i];
+		
 	RF2500_BuildPayload(packet);
 }
 
@@ -83,7 +100,7 @@ uint16_t E129_callback()
 	//Send packet
 	RF2500_SendPayload();
 	
-	//Send twice on same channel
+	//E129 sends twice on same channel, not the C186 but there is a bug somewhere if I don't send the packets back to back
 	if(phase==0)
 	{
 		phase++;
@@ -109,7 +126,9 @@ uint16_t E129_callback()
 	hopping_frequency_no &= 3;
 
 	phase=0;
-	return 5200-1260;
+	if(sub_protocol==E129_E129)
+		return 5200-1260;
+	return 5500-1260;						//E129_C186
 }
 
 void E129_init()
@@ -117,8 +136,9 @@ void E129_init()
 	BIND_IN_PROGRESS;						// Autobind protocol
     bind_counter = 384;						// ~2sec
 
-    //RF2500 emu init
-	RF2500_Init(E129_PAYLOAD_SIZE, true);	// 16 bytes, Scrambled
+	//RF2500 emu init
+	packet_length = sub_protocol == E129_E129?E129_PAYLOAD_SIZE:C186_PAYLOAD_SIZE;
+	RF2500_Init(packet_length, true);		// 16/19 bytes, Scrambled
    
 	//Freq hopping
 	calc_fh_channels(4);
@@ -136,6 +156,16 @@ void E129_init()
         hopping_frequency[2]=0x4B;			//75
         hopping_frequency[3]=0x41;			//65
     #endif
+    #ifdef C186_FORCE_ID
+        rx_tx_addr[0]=0x91;
+        rx_tx_addr[1]=0x02;
+        rx_tx_addr[2]=0x5D;
+        rx_tx_addr[3]=0x33;
+        hopping_frequency[0]=0x44 + 2;
+        hopping_frequency[1]=0x41 + 2;
+        hopping_frequency[2]=0x43 + 2;
+        hopping_frequency[3]=0x49 + 2;
+    #endif
 
 	RF2500_SetTXAddr((uint8_t*)"\xE2\x32\xE0\xC8");	// 4 bytes of bind address
 
diff --git a/Multiprotocol/Multi.txt b/Multiprotocol/Multi.txt
index 2c990cc..4dc28a7 100644
--- a/Multiprotocol/Multi.txt
+++ b/Multiprotocol/Multi.txt
@@ -80,7 +80,7 @@
 80,E016H,E016Hv2
 81,E010r5
 82,LOLI
-83,E129
+83,E129,E129,C186
 84,JOYSWAY
 85,E016H
 87,IKEA
diff --git a/Multiprotocol/Multi_Protos.ino b/Multiprotocol/Multi_Protos.ino
index 70c6d27..8162ab2 100644
--- a/Multiprotocol/Multi_Protos.ino
+++ b/Multiprotocol/Multi_Protos.ino
@@ -163,6 +163,7 @@ const char STR_SUBTYPE_FUTABA[] =     "\x05""SFHSS";
 const char STR_SUBTYPE_JJRC345[] =    "\x08""JJRC345\0""SkyTmblr";
 const char STR_SUBTYPE_MOULKG[] =     "\x06""Analog""Digit\0";
 const char STR_SUBTYPE_KF606[] =      "\x06""KF606\0""MIG320";
+const char STR_SUBTYPE_E129[] =       "\x04""E129""C186";
 
 #define NO_SUBTYPE		nullptr
 
@@ -253,7 +254,7 @@ const mm_protocol_definition multi_protocols[] = {
 		{PROTO_E01X,       STR_E01X,      STR_SUBTYPE_E01X,      2, OPTION_NONE,    0, 0, SW_CYRF,   E01X_init,       E01X_callback       },
 	#endif
 	#if defined(E129_CYRF6936_INO)
-		{PROTO_E129,       STR_E129,      NO_SUBTYPE,            0, OPTION_NONE,    0, 0, SW_CYRF,   E129_init,       E129_callback       },
+		{PROTO_E129,       STR_E129,      STR_SUBTYPE_E129,      2, OPTION_NONE,    0, 0, SW_CYRF,   E129_init,       E129_callback       },
 	#endif
 	#if defined(ESKY_NRF24L01_INO)
 		{PROTO_ESKY,       STR_ESKY,      STR_SUBTYPE_ESKY,      2, OPTION_NONE,    0, 1, SW_NRF,    ESKY_init,       ESKY_callback       },
diff --git a/Multiprotocol/Multiprotocol.h b/Multiprotocol/Multiprotocol.h
index 631c7d0..428c5fa 100644
--- a/Multiprotocol/Multiprotocol.h
+++ b/Multiprotocol/Multiprotocol.h
@@ -19,7 +19,7 @@
 #define VERSION_MAJOR		1
 #define VERSION_MINOR		3
 #define VERSION_REVISION	3
-#define VERSION_PATCH_LEVEL	12
+#define VERSION_PATCH_LEVEL	13
 
 #define MODE_SERIAL 0
 
@@ -461,6 +461,12 @@ enum KF606
 	KF606_MIG320	= 1,
 };
 
+enum E129
+{
+	E129_E129		= 0,
+	E129_C186		= 1,
+};
+
 #define NONE 		0
 #define P_HIGH		1
 #define P_LOW		0
diff --git a/Multiprotocol/Multiprotocol.ino b/Multiprotocol/Multiprotocol.ino
index 2c67a18..ce0c67d 100644
--- a/Multiprotocol/Multiprotocol.ino
+++ b/Multiprotocol/Multiprotocol.ino
@@ -179,7 +179,7 @@ uint8_t option;
 uint8_t cur_protocol[3];
 uint8_t prev_option;
 uint8_t prev_power=0xFD; // unused power value
-uint8_t  RX_num;
+uint8_t RX_num;
 
 //Serial RX variables
 #define BAUD 100000
diff --git a/Multiprotocol/RF2500_EMU.ino b/Multiprotocol/RF2500_EMU.ino
index 96983aa..d6aac9e 100644
--- a/Multiprotocol/RF2500_EMU.ino
+++ b/Multiprotocol/RF2500_EMU.ino
@@ -17,7 +17,7 @@
 
 #define RF2500_ADDR_LENGTH 4
 
-uint8_t RF2500_payload_length, RF2500_tx_addr[RF2500_ADDR_LENGTH], RF2500_buf[80];
+uint8_t RF2500_payload_length, RF2500_tx_addr[RF2500_ADDR_LENGTH], RF2500_buf[100];
 bool RF2500_scramble_enabled;
 
 static void __attribute__((unused)) RF2500_Init(uint8_t payload_length, bool scramble)
@@ -35,9 +35,17 @@ static void __attribute__((unused)) RF2500_SetTXAddr(const uint8_t* addr)
 
 static void __attribute__((unused)) RF2500_BuildPayload(uint8_t* buffer)
 {
-	const uint8_t RF2500_scramble[] = { 0xD0, 0x9E, 0x53, 0x33, 0xD8, 0xBA, 0x98, 0x08, 0x24, 0xCB, 0x3B, 0xFC, 0x71, 0xA3, 0xF4, 0x55 };
-	const uint16_t RF2500_crc_xorout_scramble = 0xAEE4;
+	const uint8_t RF2500_scramble[] = { 0xD0, 0x9E, 0x53, 0x33, 0xD8, 0xBA, 0x98, 0x08, 0x24, 0xCB, 0x3B, 0xFC, 0x71, 0xA3, 0xF4, 0x55, 0x68, 0x4F, 0xA9 }; //0x4F: unsure
+	uint16_t RF2500_crc_xorout_scramble;
+	if(RF2500_payload_length == 16)
+		RF2500_crc_xorout_scramble = 0xAEE4;
+	else //19
+		RF2500_crc_xorout_scramble = 0xE7C5;
 
+	#if 0
+		for(uint8_t i=0; i<RF2500_payload_length; i++)
+			debug("%02X ", buffer[i]);
+	#endif
 	//Scramble the incoming buffer
 	if(RF2500_scramble_enabled)
 		for(uint8_t i=0; i<RF2500_payload_length; i++)
@@ -50,6 +58,10 @@ static void __attribute__((unused)) RF2500_BuildPayload(uint8_t* buffer)
 	buffer[RF2500_payload_length  ] = bit_reverse(crc>>8);
 	buffer[RF2500_payload_length+1] = bit_reverse(crc);
 
+	#if 0
+		debugln("C:%02X %02X",buffer[RF2500_payload_length  ], buffer[RF2500_payload_length+1]);
+	#endif
+
 	if(RF2500_scramble_enabled)
 	{
 		buffer[RF2500_payload_length  ] ^= RF2500_crc_xorout_scramble>>8;
diff --git a/Multiprotocol/XN297Dump_nrf24l01.ino b/Multiprotocol/XN297Dump_nrf24l01.ino
index 9c69d4c..3a4d845 100644
--- a/Multiprotocol/XN297Dump_nrf24l01.ino
+++ b/Multiprotocol/XN297Dump_nrf24l01.ino
@@ -609,12 +609,12 @@ static uint16_t XN297Dump_callback()
 		{
 			if(phase==0)
 			{
-				address_length=5;
-				memcpy(rx_tx_addr, (uint8_t *)"\x61\x94\x17\x27\xED", address_length); //"\xA3\x05\x22\xC1""\x5A\x20\x12\xAC"
+				address_length=3;
+				memcpy(rx_tx_addr, (uint8_t *)"\xBD\x54\x78", address_length); //"\x62\xE6\xBD\x54\x78"
 
-				bitrate=XN297DUMP_250K;
-				packet_length=32;
-				hopping_frequency_no=54; //bind ?, normal 60
+				bitrate=XN297DUMP_1M;
+				packet_length=7;
+				hopping_frequency_no=40; //bind ?, normal 40
 				
 				NRF24L01_Initialize();
 				NRF24L01_SetTxRxMode(TXRX_OFF);
@@ -622,7 +622,7 @@ static uint16_t XN297Dump_callback()
 				NRF24L01_WriteReg(NRF24L01_03_SETUP_AW, address_length-2);			// RX/TX address length
 				NRF24L01_WriteRegisterMulti(NRF24L01_0A_RX_ADDR_P0, rx_tx_addr, address_length);	// set up RX address
 				NRF24L01_WriteReg(NRF24L01_11_RX_PW_P0, packet_length);				// Enable rx pipe 0
-				NRF24L01_WriteReg(NRF24L01_05_RF_CH, hopping_frequency_no);
+				NRF24L01_WriteReg(NRF24L01_05_RF_CH, option);	//hopping_frequency_no);
 
 				debug("NRF dump, len=%d, rf=%d, address length=%d, bitrate=",packet_length,hopping_frequency_no,address_length);
 				switch(bitrate)
@@ -718,6 +718,7 @@ static uint16_t XN297Dump_callback()
 					NRF24L01_FlushRx();
 					NRF24L01_WriteReg(NRF24L01_00_CONFIG, _BV(NRF24L01_00_PWR_UP) | _BV(NRF24L01_00_PRIM_RX)); //  _BV(NRF24L01_00_EN_CRC) | _BV(NRF24L01_00_CRCO) |
 				}
+				NRF24L01_WriteReg(NRF24L01_05_RF_CH, option);	//hopping_frequency_no);
 			}
 		}
 		else if(sub_protocol == XN297DUMP_CC2500)
diff --git a/Multiprotocol/_Config.h b/Multiprotocol/_Config.h
index f945a1d..1732c39 100644
--- a/Multiprotocol/_Config.h
+++ b/Multiprotocol/_Config.h
@@ -612,7 +612,8 @@ const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 		E012
 		E015
 	PROTO_E129
-		NONE
+		E129_E129
+		E129_C186
 	PROTO_ESKY
 		ESKY_STD
 		ESKY_ET4
diff --git a/Protocols_Details.md b/Protocols_Details.md
index 7ab3dda..26a466c 100644
--- a/Protocols_Details.md
+++ b/Protocols_Details.md
@@ -76,11 +76,11 @@ CFlie|38|CFlie||||||||NRF24L01|
 [DM002](Protocols_Details.md#DM002---33)|33|||||||||NRF24L01|XN297
 [DSM](Protocols_Details.md#DSM---6)|6|DSM2_1F|DSM2_2F|DSMX_1F|DSMX_2F|AUTO|DSMR_1F|||CYRF6936|
 [DSM_RX](Protocols_Details.md#DSM_RX---70)|70|Multi|CPPM|||||||CYRF6936|
-[E010R5](Protocols_Details.md#E010R5---81)|81|||||||||CYRF6936/NRF24L01|RF2500
+[E010R5](Protocols_Details.md#E010R5---81)|81|||||||||CYRF6936|RF2500
 [E016H](Protocols_Details.md#E016H---85)|85|||||||||NRF24L01|XN297
 [E016HV2](Protocols_Details.md#E016HV2---80)|80|||||||||CC2500/NRF24L01|unknown
 [E01X](Protocols_Details.md#E01X---45)|45|E012|E015|||||||CYRF6936|HS6200
-[E129](Protocols_Details.md#E129---83)|83|||||||||CYRF6936/NRF24L01|RF2500
+[E129](Protocols_Details.md#E129---83)|83|E129|C186|||||||CYRF6936|RF2500
 [ESky](Protocols_Details.md#ESKY---16)|16|ESky|ET4|||||||NRF24L01|
 [ESky150](Protocols_Details.md#ESKY150---35)|35|||||||||NRF24L01|
 [ESky150V2](Protocols_Details.md#ESKY150V2---69)|69|||||||||CC2500|NRF51822
@@ -597,9 +597,8 @@ CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9
 A|E|T|R|ARM|FLIP|LED|HEADLESS|RTH
 
 ## E129 - *83*
-Models: Eachine E129/E130 and Twister Ninja 250
 
-Not supported by Atmega328p modules.
+**Not supported by Atmega328p modules.**
 
 CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9
 ---|---|---|---|---|---|---|---|---
@@ -611,6 +610,14 @@ Take off with a none spring throttle is easier by putting both sticks down outwa
 
 Calib is the same as the original radio with both sticks down and to the left in Mode 1/2, not sure about other modes.
 
+### Sub_protocol E129 - *0*
+Models: Eachine E129/E130 and Twister Ninja 250
+
+### Sub_protocol C186 - *1*
+Models: C186, E120
+
+The FC of the heli seems to store the trims Trim A/E/R=CH7..9. If you use these trims, make sure to center them after powering off the heli or they will be added to the previous trims.
+
 ## J6Pro - *22*
 
 CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12