diff --git a/Makefile b/Makefile
index 4c9fd9f..91108ae 100644
--- a/Makefile
+++ b/Makefile
@@ -35,6 +35,7 @@ $(PROGNAME).hex: $(PROGNAME).elf
 fuse:
 
 flash: $(HEXFILE)
+	./enter_bootloader.sh
 	./wait_then_flash.sh $(CPU) $(HEXFILE)
 
 chip_erase:
diff --git a/Makefile.stk525 b/Makefile.stk525
index 22ed794..d34ade0 100644
--- a/Makefile.stk525
+++ b/Makefile.stk525
@@ -38,6 +38,7 @@ clean:
 fuse:
 
 flash: $(HEXFILE)
+	./enter_bootloader.sh
 	./wait_then_flash.sh $(CPU) $(HEXFILE)
 
 chip_erase:
diff --git a/enter_bootloader.sh b/enter_bootloader.sh
new file mode 100755
index 0000000..3b6f80d
--- /dev/null
+++ b/enter_bootloader.sh
@@ -0,0 +1,9 @@
+#!/bin/bash
+
+TOOL=./tool/gcn64ctl
+
+if [ -x $TOOL ]; then
+	$TOOL -f --bootloader
+else
+	echo $TOOL not found. Please compile it to enter bootloader automatically.
+fi
diff --git a/tool/99-raphnet.rules b/tool/99-raphnet.rules
new file mode 100644
index 0000000..bafa4e3
--- /dev/null
+++ b/tool/99-raphnet.rules
@@ -0,0 +1 @@
+SUBSYSTEM=="hidraw", ATTRS{idVendor}=="289b", ATTRS{idProduct}=="0017", MODE="0664", GROUP="plugdev"