diff --git a/win/serial_upload.bat b/win/serial_upload.bat
index 22af94e0..9226e321 100644
--- a/win/serial_upload.bat
+++ b/win/serial_upload.bat
@@ -8,16 +8,4 @@ cd %~dp0
 rem: the two line below are needed to fix path issues with incorrect slashes before the bin file name
 set str=%4
 set str=%str:/=\%
-stm32flash.exe -g 0x8000000 -b 115200 -w %str% %1
-rem: C:\Python27\python.exe stm32loader.py -e -w -p %1 -g -b 115200  %str%
-
-rem: ------------- use STM's own uploader 
-rem: ---- Need to remove the COM bit from the comm port as the STM prog just wants the number
-set commport=%1
-set commportnum=%commport:COM=%
-rem: --- The maple board may nee the -i setting to be -i STM32_Med-density_128K or STM32_Med-density_64K
-rem: ---- 64 bit version
-rem: "%ProgramFiles(x86)%\STMicroelectronics\Software\Flash Loader Demonstrator\STMFlashLoader.exe"  -c --pn %commportnum% --br 230400  -i STM32_High-density_256K -e --all -d --fn %str% --a 0x8000000 -r --a 0x8000000 
-
-rem:  -- 32 bit version
-rem: "%ProgramFiles%\STMicroelectronics\Software\Flash Loader Demonstrator\STMFlashLoader.exe"  -c --pn %commportnum% --br 230400  -i STM32_Med-density_64K -e --all -d --fn %str% --a 0x8000000 -r --a 0x8000000 
+stm32flash\stm32flash.exe -g 0x8000000 -b 115200 -w %str% %1
diff --git a/win/stm32flash.exe b/win/stm32flash.exe
deleted file mode 100644
index d48eddec..00000000
Binary files a/win/stm32flash.exe and /dev/null differ
diff --git a/win/stm32flash/stm32flash.exe b/win/stm32flash/stm32flash.exe
new file mode 100644
index 00000000..13c90779
Binary files /dev/null and b/win/stm32flash/stm32flash.exe differ
diff --git a/win/stm32flash/stm32flash64.exe b/win/stm32flash/stm32flash64.exe
new file mode 100644
index 00000000..63c52724
Binary files /dev/null and b/win/stm32flash/stm32flash64.exe differ