diff --git a/hardware/arduino/bootloaders/nuevo_diskloader/DiskLoader.elf.hex b/hardware/arduino/bootloaders/nuevo_diskloader/DiskLoader.elf.hex
index 565b0ae21..7fa502add 100644
--- a/hardware/arduino/bootloaders/nuevo_diskloader/DiskLoader.elf.hex
+++ b/hardware/arduino/bootloaders/nuevo_diskloader/DiskLoader.elf.hex
@@ -1,15 +1,15 @@
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diff --git a/hardware/arduino/bootloaders/nuevo_diskloader/DiskLoader.hex b/hardware/arduino/bootloaders/nuevo_diskloader/DiskLoader.hex
index 565b0ae21..7fa502add 100644
--- a/hardware/arduino/bootloaders/nuevo_diskloader/DiskLoader.hex
+++ b/hardware/arduino/bootloaders/nuevo_diskloader/DiskLoader.hex
@@ -1,15 +1,15 @@
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+:1078F000882309F062C0E2E5F1E713C0133009F014
+:1079000058C08B81882319F4E4E1F1E70AC0823082
+:1079100019F4E8E1F1E705C0813009F04AC0EAE373
+:10792000F1E7449150E080E8BF017BDE3EC0873044
+:1079300009F43FC0883021F481E08093F10035C024
+:10794000893099F523703070232B99F5E7E7F1E73B
+:1079500091E031E026E39093E9003093EB008491CD
+:107960008093EC002093ED009F5F3196943099F75F
+:107970008EE78093EA001092EA008B8180938E015B
+:1079800014C08F8198851092E90010929001109296
+:107990008F0190939201809391018D81882349F406
+:1079A000CE0101961BDC882321F08EEF8093E80046
+:1079B00007C081E28093EB0003C0E4E6F1E7B1CFBA
+:1079C0006196DEBFCDBFCF91DF91FF91EF91BF9167
+:1079D000AF919F918F917F916F915F914F913F9167
+:1079E0002F911F91FF90EF900F900FBE0F901F905F
+:1079F0001895EE0FFF1F0590F491E02D0994F8946F
+:027A0000FFCFB6
+:087A020000E10000000000009B
 :040000030000700089
 :00000001FF
diff --git a/hardware/arduino/bootloaders/nuevo_diskloader/src/CDC.cpp b/hardware/arduino/bootloaders/nuevo_diskloader/src/CDC.cpp
index 8bc4b518b..cc798b4a8 100644
--- a/hardware/arduino/bootloaders/nuevo_diskloader/src/CDC.cpp
+++ b/hardware/arduino/bootloaders/nuevo_diskloader/src/CDC.cpp
@@ -101,7 +101,7 @@ bool WEAK CDC_Setup(Setup& setup)
 	return false;
 }
 
-
+/*
 int _serialPeek = -1;
 void Serial_::begin(uint16_t baud_count)
 {
@@ -149,11 +149,6 @@ void Serial_::flush(void)
 
 size_t Serial_::write(uint8_t c)
 {
-	/* only try to send bytes if the high-level CDC connection itself 
-	 is open (not just the pipe) - the OS should set lineState when the port
-	 is opened and clear lineState when the port is closed.
-	 bytes sent before the user opens the connection or after
-	 the connection is closed are lost - just like with a UART. */
 	
 	// TODO - ZE - check behavior on different OSes and test what happens if an
 	// open connection isn't broken cleanly (cable is yanked out, host dies
@@ -172,6 +167,7 @@ size_t Serial_::write(uint8_t c)
 }
 
 Serial_ Serial;
+*/
 
 #endif
 #endif /* if defined(USBCON) */
\ No newline at end of file
diff --git a/hardware/arduino/bootloaders/nuevo_diskloader/src/DiskLoader.cpp b/hardware/arduino/bootloaders/nuevo_diskloader/src/DiskLoader.cpp
index 724a13024..cbb709b63 100644
--- a/hardware/arduino/bootloaders/nuevo_diskloader/src/DiskLoader.cpp
+++ b/hardware/arduino/bootloaders/nuevo_diskloader/src/DiskLoader.cpp
@@ -3,6 +3,7 @@
  */
 
 #include "Platform.h"
+#include "USBCore.h"
 
 //extern "C"
 void entrypoint(void) __attribute__ ((naked)) __attribute__ ((section (".vectors")));
@@ -123,9 +124,12 @@ int main()
 		u16 address = 0;
 		for (;;)
 		{
-			while (Serial.available() < 1)
-				;		
-			u8 cmd = Serial.read();
+//			while (Serial.available() < 1)
+//				;		
+//			u8 cmd = Serial.read();
+			while (!USB_Available(CDC_RX))
+				;
+			u8 cmd = USB_Recv(CDC_RX);
 			
 			// Read packet contents
 			u8 len;
@@ -180,8 +184,15 @@ int main()
 			}
 			
 			// Check sync
-			if (Serial.available() > 0 && Serial.read() != ' ')
+//			if (Serial.available() > 0 && Serial.read() != ' ')
+//				break;			
+//			if (USB_Available(CDC_RX) && USB_Recv(CDC_RX) != ' ')
+			u16 countdown = 5000;
+			while (!USB_Available(CDC_RX) && countdown-- > 10)
+				;
+			if (USB_Recv(CDC_RX) != ' ')
 				break;
+			
 			USB_Send(CDC_TX, &_inSync, 1);
 			
 			if (send) 
diff --git a/hardware/arduino/bootloaders/nuevo_diskloader/src/USBCore.cpp b/hardware/arduino/bootloaders/nuevo_diskloader/src/USBCore.cpp
index abb529a3e..cfcef73b0 100644
--- a/hardware/arduino/bootloaders/nuevo_diskloader/src/USBCore.cpp
+++ b/hardware/arduino/bootloaders/nuevo_diskloader/src/USBCore.cpp
@@ -273,7 +273,7 @@ int USB_Send(u8 ep, const void* d, int len)
 //			if (!(--timeout))
 //				return -1;
 //			delay(1);
-			_delay_ms(3);
+			_delay_ms(1);
 			continue;
 		}