diff --git a/src/icons.lbm b/src/icons.lbm
index 6f2afd395..f6b18fdce 100644
--- a/src/icons.lbm
+++ b/src/icons.lbm
@@ -1,2 +1,2 @@
-102,8,
-0x1d,0xe3,0xe3,0x1c,0x1c,0xdd,0xdd,0x3e,0xea,0x23,0x6b,0xb6,0xa1,0x9f,0xbf,0xc0,0xf9,0xef,0xff,0xe8,0xa1,0x9f,0xbf,0xc0,0xea,0x23,0x6b,0xb6,0x1c,0xdd,0xdd,0x3e,0x1d,0xe3,0xe3,0x1c,0x38,0xff,0xff,0x38,0x7c,0xbb,0xbb,0x7c,0xfe,0x7d,0x7d,0xfe,0xfe,0xff,0xff,0xfe,0x00,0xff,0xff,0x00,0x50,0xff,0xff,0x50,0x20,0xff,0xff,0x20,0x50,0xff,0xff,0x50,0x38,0xff,0xff,0x38,0x7c,0xbb,0xbb,0x7c,0xfe,0x7d,0x7d,0xfe,0xfe,0xff,0xff,0xfe,0x00,0xff,0xff,0x00,0x40,0xff,0xff,0x40,0x40,0xff,0xff,0x40,0x40,0xff,0xff,0x40,0x38,0xff,0xff,0x38,0x7c,0xbb,0xbb,0x7c,0xfe,0x7d,0x7d,0xfe,0xfe,0xff,0xff,0xfe,0x00,0xff,0xff,0x00,0x50,0xff,0xff,0x50,0x50,0xff,0xff,0x50,0x50,0xff,0xff,0x50,0x38,0xff,0xff,0x38,0x7c,0xbb,0xbb,0x7c,0xfe,0x7d,0x7d,0xfe,0xfe,0xff,0xff,0xfe,0x00,0xff,0xff,0x00,0x54,0xff,0xff,0x54,0x54,0xff,0xff,0x54,0x54,0xff,0xff,0x54,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,0x7f,0xff,0xc1,0x41,0x41,0xff,0xfd,0x7d,0x7d,0xff,0xfd,0x7d,0x7d,0xff,0xfd,0x7d,0x7d,0xff,0xfd,0x7d,0x7d,0xfd,0xfb,0x7b,0x79,0xfb,0xc7,0x47,0x43,0xff,0xff,0x7f,0x7f,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,0x7f,0xff,0xff,0x7f,0x7f,0xe3,0xff,0x77,0x63,0xdd,0xff,0x63,0x41,0xdd,0xff,0x41,0x41,0xdd,0xff,0x63,0x41,0xe3,0xff,0x77,0x63,0xff,0xff,0x7f,0x7f,0xff,0xff,0x7f,0x7f,0xff,0xff,0xff,0xff,0xfd,0xff,0x43,0x41,0xff,0xff,0x7d,0x7d,0xff,0xff,0x73,0x73,0xff,0xff,0x7d,0x7d,0xdd,0xff,0x63,0x41,0xff,0xff,0x5f,0x5f,0xff,0xff,0x59,0x59,0xdd,0xff,0x63,0x41,0xff,0xff,0x79,0x79,0xff,0xff,0xff,0xff,0xff,0xff,0x79,0x79,0xdd,0xff,0x63,0x41,0xff,0xff,0x59,0x59,0xff,0xff,0x5f,0x5f,0xf5,0xff,0x5b,0x51,0xff,0xff,0x55,0x55,0xff,0xff,0x55,0x55,0xff,0xff,0x55,0x55,0xd7,0xff,0x6d,0x45,0xff,0xff,0xff,0xff,0xff,0xff,0x63,0x63,0xff,0xff,0x63,0x63,0xff,0xff,0x77,0x77,0xff,0xff,0x73,0x73,0xff,0xff,0x65,0x65,0xfd,0xff,0x57,0x55,0xff,0xff,0x77,0x77,0xff,0xff,0x63,0x63,0xeb,0xff,0x77,0x63,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,0x7f,0xff,0xff,0x7f,0x7f,0xff,0xff,0x7f,0x7f,0xff,0xff,0x7f,0x7f,0xff,0xff,0x51,0x51,0xff,0xff,0x7f,0x7f,0xff,0xff,0x7f,0x7f,0xff,0xff,0x7f,0x7f,0xff,0xff,0x7f,0x7f,0xff,0xff,0xff,0xff,
+102,8,
+0xff,0xff,0x00,0x00,0xff,0xff,0x1c,0x1c,0x6b,0xff,0xb6,0x22,0xbf,0xff,0xc0,0x80,0xff,0xff,0xe8,0xe8,0xbf,0xff,0xc0,0x80,0x6b,0xff,0xb6,0x22,0xff,0xff,0x1c,0x1c,0xff,0xff,0x00,0x00,0xff,0xff,0x38,0x38,0xbb,0xff,0x7c,0x38,0x7d,0xff,0xfe,0x7c,0xff,0xff,0xfe,0xfe,0xff,0xff,0x00,0x00,0xff,0xff,0x50,0x50,0xff,0xff,0x20,0x20,0xff,0xff,0x50,0x50,0xff,0xff,0x38,0x38,0xbb,0xff,0x7c,0x38,0x7d,0xff,0xfe,0x7c,0xff,0xff,0xfe,0xfe,0xff,0xff,0x00,0x00,0xff,0xff,0x40,0x40,0xff,0xff,0x40,0x40,0xff,0xff,0x40,0x40,0xff,0xff,0x38,0x38,0xbb,0xff,0x7c,0x38,0x7d,0xff,0xfe,0x7c,0xff,0xff,0xfe,0xfe,0xff,0xff,0x00,0x00,0xff,0xff,0x50,0x50,0xff,0xff,0x50,0x50,0xff,0xff,0x50,0x50,0xff,0xff,0x38,0x38,0xbb,0xff,0x7c,0x38,0x7d,0xff,0xfe,0x7c,0xff,0xff,0xfe,0xfe,0xff,0xff,0x00,0x00,0xff,0xff,0x54,0x54,0xff,0xff,0x54,0x54,0xff,0xff,0x54,0x54,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,0x7f,0xff,0xc1,0x41,0x41,0xff,0xfd,0x7d,0x7d,0xff,0xfd,0x7d,0x7d,0xff,0xfd,0x7d,0x7d,0xff,0xfd,0x7d,0x7d,0xfd,0xfb,0x7b,0x79,0xfb,0xc7,0x47,0x43,0xff,0xff,0x7f,0x7f,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,0x7f,0xff,0xff,0x7f,0x7f,0xe3,0xff,0x77,0x63,0xdd,0xff,0x63,0x41,0xdd,0xff,0x41,0x41,0xdd,0xff,0x63,0x41,0xe3,0xff,0x77,0x63,0xff,0xff,0x7f,0x7f,0xff,0xff,0x7f,0x7f,0xff,0xff,0xff,0xff,0xfd,0xff,0x43,0x41,0xff,0xff,0x7d,0x7d,0xff,0xff,0x73,0x73,0xff,0xff,0x7d,0x7d,0xdd,0xff,0x63,0x41,0xff,0xff,0x5f,0x5f,0xff,0xff,0x59,0x59,0xdd,0xff,0x63,0x41,0xff,0xff,0x79,0x79,0xff,0xff,0xff,0xff,0xff,0xff,0x79,0x79,0xdd,0xff,0x63,0x41,0xff,0xff,0x59,0x59,0xff,0xff,0x5f,0x5f,0xf5,0xff,0x5b,0x51,0xff,0xff,0x55,0x55,0xff,0xff,0x55,0x55,0xff,0xff,0x55,0x55,0xd7,0xff,0x6d,0x45,0xff,0xff,0xff,0xff,0xff,0xff,0x63,0x63,0xff,0xff,0x63,0x63,0xff,0xff,0x77,0x77,0xff,0xff,0x73,0x73,0xff,0xff,0x65,0x65,0xfd,0xff,0x57,0x55,0xff,0xff,0x77,0x77,0xff,0xff,0x63,0x63,0xeb,0xff,0x77,0x63,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,0x7f,0xff,0xff,0x7f,0x7f,0xff,0xff,0x7f,0x7f,0xff,0xff,0x7f,0x7f,0xff,0xff,0x51,0x51,0xff,0xff,0x7f,0x7f,0xff,0xff,0x7f,0x7f,0xff,0xff,0x7f,0x7f,0xff,0xff,0x7f,0x7f,0xff,0xff,0xff,0xff,
diff --git a/src/icons.png b/src/icons.png
index 1a225a37e..8b08f8a69 100644
Binary files a/src/icons.png and b/src/icons.png differ
diff --git a/src/lcd.h b/src/lcd.h
index bd837c0a6..aab315602 100644
--- a/src/lcd.h
+++ b/src/lcd.h
@@ -129,7 +129,7 @@
 
 #if defined(PCBX9D)
 #define GREY(x)       ((x) * 0x1000)
-#define GREY_DEFAULT  GREY(8)
+#define GREY_DEFAULT  GREY(11)
 #define GREY_MASK(x)  ((x) & 0xF000)
 #endif
 
diff --git a/src/main_views.cpp b/src/main_views.cpp
index 0c65cb6b1..29cd2d54f 100644
--- a/src/main_views.cpp
+++ b/src/main_views.cpp
@@ -247,7 +247,7 @@ void displayTopBar()
     x -= 12;
   }
 
-  if (1) {
+  if (usbPlugged()) {
     LCD_NOTIF_ICON(x, ICON_USB);
     x -= 12;
   }
diff --git a/src/model_menus.cpp b/src/model_menus.cpp
index 98529cf6c..39afd5e84 100644
--- a/src/model_menus.cpp
+++ b/src/model_menus.cpp
@@ -3493,7 +3493,7 @@ void menuModelCustomFunctions(uint8_t event)
 #if defined(GVARS)
             else if (CFN_FUNC(sd) >= FUNC_ADJUST_GV1
 #if defined(DEBUG)
-                && CFN_FUNC(sd) <= FUNC_ADJUST_GV5
+                && CFN_FUNC(sd) <= FUNC_ADJUST_GVLAST
 #endif
                 ) {
               switch (CFN_GVAR_MODE(sd)) {
diff --git a/src/x9d/board_x9d.cpp b/src/x9d/board_x9d.cpp
index 38a119b65..09958bba9 100644
--- a/src/x9d/board_x9d.cpp
+++ b/src/x9d/board_x9d.cpp
@@ -43,6 +43,7 @@ extern "C" {
 uint8_t temperature = 0;          // Raw temp reading
 uint8_t maxTemperature = 0 ;       // Raw temp reading
 volatile uint32_t Tenms ; // TODO to remove everywhere / use a #define
+uint8_t usb_connected = 0;
 
 #define PIN_MODE_MASK           0x0003
 #define PIN_INPUT               0x0000
@@ -106,6 +107,11 @@ void configure_pins( uint32_t pins, uint16_t config )
 }
 #endif
 
+uint8_t usbPlugged(void)
+{
+  return usb_connected;	
+}
+
 #if defined(DEBUG)
 void debugPutc(const char c)
 {
diff --git a/src/x9d/board_x9d.h b/src/x9d/board_x9d.h
index 37221facc..647549915 100644
--- a/src/x9d/board_x9d.h
+++ b/src/x9d/board_x9d.h
@@ -80,6 +80,7 @@ uint8_t getTemperature();
 
 extern uint16_t sessionTimer;
 
+uint8_t usbPlugged(void);
 #define BOOTLOADER_REQUEST() (0/*usbPlugged()*/)
 
 #define SLAVE_MODE() (0/*pwrCheck() == e_power_trainer*/)
diff --git a/src/x9d/hal.h b/src/x9d/hal.h
index 1c4a98545..3c6a823d5 100644
--- a/src/x9d/hal.h
+++ b/src/x9d/hal.h
@@ -156,6 +156,8 @@
 #define RCC_AHB1Periph_GPIOPWR          RCC_AHB1Periph_GPIOC | RCC_AHB1Periph_GPIOD
 #define GPIOPWRLED                      GPIOC
 #define GPIOPWR                         GPIOD
+#define GPIOTRNDET                      GPIOA
+#define PIN_TRNDET                      GPIO_Pin_8
 
 // Trainer Port
 #define PIN_TR_PPM_IN                   GPIO_Pin_8  //PC.08
@@ -255,6 +257,11 @@
 #define I2C_EE_SDA                      GPIO_Pin_0  //PE0
 #define I2C_EE_WP                       GPIO_Pin_9  //PB9
 #else
+#define RCC_APBPeriph_I2C_EE            RCC_APB1Periph_I2C1
+#define I2C_EE                          I2C1
+#define GPIO_AF_I2C_EE                  GPIO_AF_I2C1
+#define GPIO_PinSource_I2C_EE_SCL       GPIO_PinSource6
+#define GPIO_PinSource_I2C_EE_SDA       GPIO_PinSource7
 #define I2C_EE_GPIO                     GPIOB
 #define I2C_EE_WP_GPIO                  GPIOB
 #define I2C_EE_GPIO_CLK                 RCC_AHB1Periph_GPIOB
diff --git a/src/x9d/pwr_driver.cpp b/src/x9d/pwr_driver.cpp
index 09400c4d0..614a99a9e 100644
--- a/src/x9d/pwr_driver.cpp
+++ b/src/x9d/pwr_driver.cpp
@@ -48,6 +48,12 @@ uint32_t pwrCheck()
 #else
   if (GPIO_ReadInputDataBit(GPIOPWR, PIN_PWR_STATUS) == Bit_RESET)
     return e_power_on;
+#if !defined(REV3)
+  else if (GPIO_ReadInputDataBit(GPIOTRNDET, PIN_TRNDET) == Bit_RESET)
+  	return  e_power_trainer;
+#endif
+  else if (usbPlugged())
+  	return e_power_usb;
   else
     return e_power_off;
 #endif
diff --git a/src/x9d/usbd_usr.c b/src/x9d/usbd_usr.c
index 5df034e7d..9af985ab9 100644
--- a/src/x9d/usbd_usr.c
+++ b/src/x9d/usbd_usr.c
@@ -28,6 +28,8 @@
 /* Includes ------------------------------------------------------------------*/
 #include "usbd_usr.h"
 
+extern uint8_t usb_connected;
+
 /*  Points to the DEVICE_PROP structure of current device */
 /*  The purpose of this register is to speed up the execution */
 
@@ -102,7 +104,7 @@ void USBD_USR_DeviceResumed(void)
 */
 void USBD_USR_DeviceConnected (void)
 {
-
+  usb_connected = 1;
 }
 
 
@@ -114,7 +116,7 @@ void USBD_USR_DeviceConnected (void)
 */
 void USBD_USR_DeviceDisconnected (void)
 {
-
+  usb_connected = 0;
 }