diff --git a/src/Config/Configuration.h b/src/Config/Configuration.h
index 70a0ca4843..1d216b4357 100644
--- a/src/Config/Configuration.h
+++ b/src/Config/Configuration.h
@@ -187,12 +187,8 @@ constexpr size_t OUTPUT_BUFFER_COUNT = 40;				// How many OutputBuffer instances
 constexpr size_t RESERVED_OUTPUT_BUFFERS = 4;			// Number of reserved output buffers after long responses, enough to hold a status response
 #elif SAM4E || SAM4S
 constexpr size_t OUTPUT_BUFFER_SIZE = 256;				// How many bytes does each OutputBuffer hold?
-constexpr size_t OUTPUT_BUFFER_COUNT = 24;				// How many OutputBuffer instances do we have?
+constexpr size_t OUTPUT_BUFFER_COUNT = 26;				// How many OutputBuffer instances do we have?
 constexpr size_t RESERVED_OUTPUT_BUFFERS = 4;			// Number of reserved output buffers after long responses, enough to hold a status response
-#elif SAM3XA
-constexpr size_t OUTPUT_BUFFER_SIZE = 256;				// How many bytes does each OutputBuffer hold?
-constexpr size_t OUTPUT_BUFFER_COUNT = 16;				// How many OutputBuffer instances do we have?
-constexpr size_t RESERVED_OUTPUT_BUFFERS = 2;			// Number of reserved output buffers after long responses
 #elif __LPC17xx__
 constexpr uint16_t OUTPUT_BUFFER_SIZE = 256;            // How many bytes does each OutputBuffer hold?
 constexpr size_t OUTPUT_BUFFER_COUNT = 16;              // How many OutputBuffer instances do we have?
diff --git a/src/Hardware/SoftwareReset.h b/src/Hardware/SoftwareReset.h
index 3e080611f5..15cfa87856 100644
--- a/src/Hardware/SoftwareReset.h
+++ b/src/Hardware/SoftwareReset.h
@@ -10,10 +10,6 @@
 
 #include <RepRapFirmware.h>
 
-#if SAM3XA
-# include <DueFlashStorage.h>
-#endif
-
 // Enumeration describing the reasons for a software reset.
 // The spin state gets or'ed into this, so keep the lower 5 bits unused.
 // IMPORTANT! When changing this, also update table SoftwareResetReasonText
diff --git a/src/Platform/Platform.cpp b/src/Platform/Platform.cpp
index ff1e6db6bc..1e6a085569 100644
--- a/src/Platform/Platform.cpp
+++ b/src/Platform/Platform.cpp
@@ -797,9 +797,7 @@ void Platform::Init() noexcept
 
 	// If MISO from a MAX31856 board breaks after initialising the MAX31856 then if MISO floats low and reads as all zeros, this looks like a temperature of 0C and no error.
 	// Enable the pullup resistor, with luck this will make it float high instead.
-#if SAM3XA
-	pinMode(APIN_SHARED_SPI_MISO, INPUT_PULLUP);
-#elif defined(__LPC17xx__) || SAME5x
+#if defined(__LPC17xx__) || SAME5x
 	// nothing to do here
 #else
 	pinMode(APIN_USART_SSPI_MISO, INPUT_PULLUP);
@@ -1504,8 +1502,6 @@ float Platform::GetCpuTemperature() const noexcept
 	const float voltage = (float)adcFilters[CpuTempFilterIndex].GetSum() * (3.3/(float)((1u << AdcBits) * ThermistorAverageReadings));
 # if SAM4E || SAM4S
 	return (voltage - 1.44) * (1000.0/4.7) + 27.0 + mcuTemperatureAdjust;			// accuracy at 27C is +/-13C
-# elif SAM3XA
-	return (voltage - 0.8) * (1000.0/2.65) + 27.0 + mcuTemperatureAdjust;			// accuracy at 27C is +/-45C
 # elif SAME70
 	return (voltage - 0.72) * (1000.0/2.33) + 25.0 + mcuTemperatureAdjust;			// accuracy at 25C is +/-34C
 # else
diff --git a/src/Platform/RepRap.cpp b/src/Platform/RepRap.cpp
index 286e63a89c..ae951908fe 100644
--- a/src/Platform/RepRap.cpp
+++ b/src/Platform/RepRap.cpp
@@ -2896,8 +2896,6 @@ bool RepRap::CheckFirmwareUpdatePrerequisites(const StringRef& reply, const Stri
 	if (!ok || firstDword !=
 #if SAME5x
 						HSRAM_ADDR + HSRAM_SIZE
-#elif SAM3XA
-						IRAM1_ADDR + IRAM1_SIZE
 #else
 						IRAM_ADDR + IRAM_SIZE
 #endif
@@ -3036,8 +3034,6 @@ void RepRap::StartIap(const char *filename) noexcept
 		if (topOfStack + firmwareFileLocation.strlen() + 1 <=
 # if SAME5x
 						HSRAM_ADDR + HSRAM_SIZE
-# elif SAM3XA
-						IRAM1_ADDR + IRAM1_SIZE
 # else
 						IRAM_ADDR + IRAM_SIZE
 # endif
diff --git a/src/Version.h b/src/Version.h
index 474912dbda..8a6cdf11db 100644
--- a/src/Version.h
+++ b/src/Version.h
@@ -10,7 +10,7 @@
 
 #ifndef VERSION
 // Note: the complete VERSION string must be in standard version number format and must not contain spaces! This is so that DWC can parse it.
-# define MAIN_VERSION	"3.4.0+1"
+# define MAIN_VERSION	"3.4.1rc1"
 # ifdef USE_CAN0
 #  define VERSION_SUFFIX	"(CAN0)"
 # else