diff --git a/LUFA/DoxygenPages/ChangeLog.txt b/LUFA/DoxygenPages/ChangeLog.txt
index 7758f8b942..43a1b6f6eb 100644
--- a/LUFA/DoxygenPages/ChangeLog.txt
+++ b/LUFA/DoxygenPages/ChangeLog.txt
@@ -64,6 +64,7 @@
   *   - Fixed possible deadlock in the CDC device driver if the USB connection is dropped while the CDC_REQ_SetLineEncoding control request is being processed by
   *     the stack (thanks to Jonathan Hudgins)
   *   - Fixed broken MIDI host driver MIDI_Host_ReceiveEventPacket() function due to not unfreezing the MIDI data IN pipe before use (thanks to Michael Brown)
+  *   - Fixed swapped Little Endian/Big Endian endpoint and pipe write code for the UC3 devices (thanks to Andrew Chu)
   *  - Library Applications:
   *   - Fixed error in the AVRISP-MKII programmer when ISP mode is used at 64KHz (thanks to Ben R. Porter)
   *   - Fixed AVRISP-MKII programmer project failing to compile for the U4 chips when VTARGET_ADC_CHANNEL is defined to an invalid channel and NO_VTARGET_DETECT is
diff --git a/LUFA/Drivers/USB/Class/Device/RNDISClassDevice.c b/LUFA/Drivers/USB/Class/Device/RNDISClassDevice.c
index e5aa40cd0d..6b710c3d5e 100644
--- a/LUFA/Drivers/USB/Class/Device/RNDISClassDevice.c
+++ b/LUFA/Drivers/USB/Class/Device/RNDISClassDevice.c
@@ -406,8 +406,7 @@ static bool RNDIS_Device_ProcessNDISSet(USB_ClassInfo_RNDIS_Device_t* const RNDI
 	{
 		case OID_GEN_CURRENT_PACKET_FILTER:
 			RNDISInterfaceInfo->State.CurrPacketFilter = le32_to_cpu(*((uint32_t*)SetData));
-			RNDISInterfaceInfo->State.CurrRNDISState   = le32_to_cpu((RNDISInterfaceInfo->State.CurrPacketFilter) ?
-			                                                         RNDIS_Data_Initialized : RNDIS_Data_Initialized);
+			RNDISInterfaceInfo->State.CurrRNDISState   = (RNDISInterfaceInfo->State.CurrPacketFilter) ? RNDIS_Data_Initialized : RNDIS_Initialized;
 
 			return true;
 		case OID_802_3_MULTICAST_LIST:
diff --git a/LUFA/Drivers/USB/Core/UC3/Endpoint_UC3.h b/LUFA/Drivers/USB/Core/UC3/Endpoint_UC3.h
index 84801a13f2..a1b2a16f27 100644
--- a/LUFA/Drivers/USB/Core/UC3/Endpoint_UC3.h
+++ b/LUFA/Drivers/USB/Core/UC3/Endpoint_UC3.h
@@ -605,8 +605,8 @@
 			static inline void Endpoint_Write_16_LE(const uint16_t Data) ATTR_ALWAYS_INLINE;
 			static inline void Endpoint_Write_16_LE(const uint16_t Data)
 			{
-				*(USB_Endpoint_FIFOPos[USB_Endpoint_SelectedEndpoint]++) = (Data >> 8);
 				*(USB_Endpoint_FIFOPos[USB_Endpoint_SelectedEndpoint]++) = (Data & 0xFF);
+				*(USB_Endpoint_FIFOPos[USB_Endpoint_SelectedEndpoint]++) = (Data >> 8);
 			}
 
 			/** Writes two bytes to the currently selected endpoint's bank in big endian format, for IN
@@ -619,8 +619,8 @@
 			static inline void Endpoint_Write_16_BE(const uint16_t Data) ATTR_ALWAYS_INLINE;
 			static inline void Endpoint_Write_16_BE(const uint16_t Data)
 			{
-				*(USB_Endpoint_FIFOPos[USB_Endpoint_SelectedEndpoint]++) = (Data & 0xFF);
 				*(USB_Endpoint_FIFOPos[USB_Endpoint_SelectedEndpoint]++) = (Data >> 8);
+				*(USB_Endpoint_FIFOPos[USB_Endpoint_SelectedEndpoint]++) = (Data & 0xFF);
 			}
 
 			/** Discards two bytes from the currently selected endpoint's bank, for OUT direction endpoints.
@@ -684,10 +684,10 @@
 			static inline void Endpoint_Write_32_LE(const uint32_t Data) ATTR_ALWAYS_INLINE;
 			static inline void Endpoint_Write_32_LE(const uint32_t Data)
 			{
-				*(USB_Endpoint_FIFOPos[USB_Endpoint_SelectedEndpoint]++) = (Data >> 24);
-				*(USB_Endpoint_FIFOPos[USB_Endpoint_SelectedEndpoint]++) = (Data >> 16);
-				*(USB_Endpoint_FIFOPos[USB_Endpoint_SelectedEndpoint]++) = (Data >> 8);
 				*(USB_Endpoint_FIFOPos[USB_Endpoint_SelectedEndpoint]++) = (Data &  0xFF);
+				*(USB_Endpoint_FIFOPos[USB_Endpoint_SelectedEndpoint]++) = (Data >> 8);
+				*(USB_Endpoint_FIFOPos[USB_Endpoint_SelectedEndpoint]++) = (Data >> 16);
+				*(USB_Endpoint_FIFOPos[USB_Endpoint_SelectedEndpoint]++) = (Data >> 24);
 			}
 
 			/** Writes four bytes to the currently selected endpoint's bank in big endian format, for IN
@@ -700,10 +700,10 @@
 			static inline void Endpoint_Write_32_BE(const uint32_t Data) ATTR_ALWAYS_INLINE;
 			static inline void Endpoint_Write_32_BE(const uint32_t Data)
 			{
-				*(USB_Endpoint_FIFOPos[USB_Endpoint_SelectedEndpoint]++) = (Data &  0xFF);
-				*(USB_Endpoint_FIFOPos[USB_Endpoint_SelectedEndpoint]++) = (Data >> 8);
-				*(USB_Endpoint_FIFOPos[USB_Endpoint_SelectedEndpoint]++) = (Data >> 16);
 				*(USB_Endpoint_FIFOPos[USB_Endpoint_SelectedEndpoint]++) = (Data >> 24);
+				*(USB_Endpoint_FIFOPos[USB_Endpoint_SelectedEndpoint]++) = (Data >> 16);
+				*(USB_Endpoint_FIFOPos[USB_Endpoint_SelectedEndpoint]++) = (Data >> 8);
+				*(USB_Endpoint_FIFOPos[USB_Endpoint_SelectedEndpoint]++) = (Data &  0xFF);
 			}
 
 			/** Discards four bytes from the currently selected endpoint's bank, for OUT direction endpoints.
diff --git a/LUFA/Drivers/USB/Core/UC3/Pipe_UC3.h b/LUFA/Drivers/USB/Core/UC3/Pipe_UC3.h
index 837afe8b8e..0c3136e155 100644
--- a/LUFA/Drivers/USB/Core/UC3/Pipe_UC3.h
+++ b/LUFA/Drivers/USB/Core/UC3/Pipe_UC3.h
@@ -515,6 +515,7 @@
 			static inline void Pipe_ClearSETUP(void)
 			{
 				(&AVR32_USBB.UPSTA0CLR)[USB_Pipe_SelectedPipe].txstpic = true;
+				(&AVR32_USBB.UPCON0CLR)[USB_Pipe_SelectedPipe].fifoconc = true;
 				USB_Pipe_FIFOPos[USB_Pipe_SelectedPipe] = &AVR32_USBB_SLAVE[USB_Pipe_SelectedPipe * PIPE_HSB_ADDRESS_SPACE_SIZE];
 			}
 
@@ -676,8 +677,8 @@
 			static inline void Pipe_Write_16_LE(const uint16_t Data) ATTR_ALWAYS_INLINE;
 			static inline void Pipe_Write_16_LE(const uint16_t Data)
 			{
-				*(USB_Pipe_FIFOPos[USB_Pipe_SelectedPipe]++) = (Data >> 8);
 				*(USB_Pipe_FIFOPos[USB_Pipe_SelectedPipe]++) = (Data & 0xFF);
+				*(USB_Pipe_FIFOPos[USB_Pipe_SelectedPipe]++) = (Data >> 8);
 			}
 
 			/** Writes two bytes to the currently selected pipe's bank in big endian format, for IN
@@ -690,8 +691,8 @@
 			static inline void Pipe_Write_16_BE(const uint16_t Data) ATTR_ALWAYS_INLINE;
 			static inline void Pipe_Write_16_BE(const uint16_t Data)
 			{
-				*(USB_Pipe_FIFOPos[USB_Pipe_SelectedPipe]++) = (Data & 0xFF);
 				*(USB_Pipe_FIFOPos[USB_Pipe_SelectedPipe]++) = (Data >> 8);
+				*(USB_Pipe_FIFOPos[USB_Pipe_SelectedPipe]++) = (Data & 0xFF);
 			}
 
 			/** Discards two bytes from the currently selected pipe's bank, for OUT direction pipes.
@@ -755,10 +756,10 @@
 			static inline void Pipe_Write_32_LE(const uint32_t Data) ATTR_ALWAYS_INLINE;
 			static inline void Pipe_Write_32_LE(const uint32_t Data)
 			{
-				*(USB_Pipe_FIFOPos[USB_Pipe_SelectedPipe]++) = (Data >> 24);
-				*(USB_Pipe_FIFOPos[USB_Pipe_SelectedPipe]++) = (Data >> 16);
-				*(USB_Pipe_FIFOPos[USB_Pipe_SelectedPipe]++) = (Data >> 8);
 				*(USB_Pipe_FIFOPos[USB_Pipe_SelectedPipe]++) = (Data &  0xFF);
+				*(USB_Pipe_FIFOPos[USB_Pipe_SelectedPipe]++) = (Data >> 8);
+				*(USB_Pipe_FIFOPos[USB_Pipe_SelectedPipe]++) = (Data >> 16);
+				*(USB_Pipe_FIFOPos[USB_Pipe_SelectedPipe]++) = (Data >> 24);
 			}
 
 			/** Writes four bytes to the currently selected pipe's bank in big endian format, for IN
@@ -771,10 +772,10 @@
 			static inline void Pipe_Write_32_BE(const uint32_t Data) ATTR_ALWAYS_INLINE;
 			static inline void Pipe_Write_32_BE(const uint32_t Data)
 			{
-				*(USB_Pipe_FIFOPos[USB_Pipe_SelectedPipe]++) = (Data &  0xFF);
-				*(USB_Pipe_FIFOPos[USB_Pipe_SelectedPipe]++) = (Data >> 8);
-				*(USB_Pipe_FIFOPos[USB_Pipe_SelectedPipe]++) = (Data >> 16);
 				*(USB_Pipe_FIFOPos[USB_Pipe_SelectedPipe]++) = (Data >> 24);
+				*(USB_Pipe_FIFOPos[USB_Pipe_SelectedPipe]++) = (Data >> 16);
+				*(USB_Pipe_FIFOPos[USB_Pipe_SelectedPipe]++) = (Data >> 8);
+				*(USB_Pipe_FIFOPos[USB_Pipe_SelectedPipe]++) = (Data &  0xFF);
 			}
 
 			/** Discards four bytes from the currently selected pipe's bank, for OUT direction pipes.
diff --git a/LUFA/Drivers/USB/Core/UC3/USBController_UC3.c b/LUFA/Drivers/USB/Core/UC3/USBController_UC3.c
index 32772446ef..9e4e4a211c 100644
--- a/LUFA/Drivers/USB/Core/UC3/USBController_UC3.c
+++ b/LUFA/Drivers/USB/Core/UC3/USBController_UC3.c
@@ -138,7 +138,7 @@ void USB_ResetInterface(void)
 	else if (USB_CurrentMode == USB_MODE_Host)
 	{
 		#if defined(INVERTED_VBUS_ENABLE_LINE)
-		AVR32_USBB.USBCON.vbuspol = true;
+		AVR32_USBB.USBCON.vbuspo = true;
 		#endif
 		
 		#if defined(USB_CAN_BE_HOST)
diff --git a/LUFA/Drivers/USB/Core/XMEGA/Endpoint_XMEGA.h b/LUFA/Drivers/USB/Core/XMEGA/Endpoint_XMEGA.h
index 720b5f3b4f..23de8fc099 100644
--- a/LUFA/Drivers/USB/Core/XMEGA/Endpoint_XMEGA.h
+++ b/LUFA/Drivers/USB/Core/XMEGA/Endpoint_XMEGA.h
@@ -274,7 +274,10 @@
 			static inline uint16_t Endpoint_BytesInEndpoint(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
 			static inline uint16_t Endpoint_BytesInEndpoint(void)
 			{
-				return USB_Endpoint_SelectedFIFO->Position;
+				if (USB_Endpoint_SelectedEndpoint & ENDPOINT_DIR_IN)
+				  return USB_Endpoint_SelectedFIFO->Position;
+				else
+				  return (USB_Endpoint_SelectedFIFO->Length - USB_Endpoint_SelectedFIFO->Position);
 			}
 
 			/** Get the endpoint address of the currently selected endpoint. This is typically used to save