diff --git a/RTL00_SDKV35a/flasher.mk b/RTL00_SDKV35a/flasher.mk
index aae3c78..f206666 100644
--- a/RTL00_SDKV35a/flasher.mk
+++ b/RTL00_SDKV35a/flasher.mk
@@ -33,11 +33,10 @@ OBJDUMP ?= $(CROSS_COMPILE)objdump
 TOOLS_PATH ?= $(SDK_PATH)../tools/
 ifneq ($(shell uname), Linux)
 EXE = .exe
-IMAGETOOL ?= $(TOOLS_PATH)rtlaimage/rtlaimage$(EXE)
-else
-IMAGETOOL ?= $(TOOLS_PATH)rtlaimage/rtlaimage.py
 endif
 
+IMAGETOOL ?= $(PYTHON) $(TOOLS_PATH)rtlaimage/rtlaimage.py
+
 # openocd tools
 OPENOCD = $(OPENOCD_PATH)openocd.exe
 
diff --git a/RTL00_SDKV35a/paths.mk b/RTL00_SDKV35a/paths.mk
index 5db8df1..4b16a6e 100644
--- a/RTL00_SDKV35a/paths.mk
+++ b/RTL00_SDKV35a/paths.mk
@@ -8,6 +8,7 @@ FLASHER_TYPE ?= Jlink
 FLASHER_PATH ?= $(SDK_PATH)flasher/
 JLINK_PATH ?= D:/MCU/SEGGER/JLink_V612i/
 JLINK_GDBSRV ?= JLinkGDBServer.exe
+PYTHON ?= C:/Python27/python
 #---------------------------
 # Default
 #---------------------------
diff --git a/userset.mk b/userset.mk
index d4fc45c..e2d6821 100644
--- a/userset.mk
+++ b/userset.mk
@@ -1,13 +1,14 @@
 #=============================================
 # User defined
 #=============================================
-#SDK_PATH = ../RTL00MP3/RTL00_SDKV35a/
 SDK_PATH = RTL00_SDKV35a/
 #GCC_PATH = d:/MCU/GNU_Tools_ARM_Embedded/6.2017-q1-update/bin/# + or set in PATH
 #OPENOCD_PATH = D:/MCU/OpenOCD/bin/# + or set in PATH
-#TOOLS_PATH ?= $(SDK_PATH)component/soc/realtek/8195a/misc/iar_utility/common/tools/
-FLASHER_TYPE = Jlink
-#FLASHER_TYPE = cmsis-dap
+#TOOLS_PATH ?= $(SDK_PATH)../tools/
+PYTHON ?= C:/Python27/python
+IMAGETOOL ?= $(PYTHON) $(TOOLS_PATH)rtlaimage/rtlaimage.py
+FLASHER_TYPE ?= Jlink
+#FLASHER_TYPE ?= cmsis-dap
 FLASHER_SPEED = 3500
 FLASHER_PATH = flasher/
 JLINK_PATH ?= D:/MCU/SEGGER/JLink_V612i/