diff --git a/firmware/config/boards/STM32F407VET6_Mini.bat b/firmware/config/boards/STM32F407VET6_Mini.bat
new file mode 100644
index 0000000000..3cb189f5a4
--- /dev/null
+++ b/firmware/config/boards/STM32F407VET6_Mini.bat
@@ -0,0 +1,7 @@
+
+echo "Compiling for https://rusefi.com/forum/viewtopic.php?f=4&t=1498"
+cd ../..
+set EXTRA_PARAMS="-DEFI_COMMUNICATION_PIN=GPIOB_9 -DSTM32_PLLM_VALUE=25"
+make clean
+make
+..\misc\hex2dfu\HEX2DFU.exe build/rusefi.hex   -out build/rusefi.dfu
diff --git a/firmware/config/stm32f4ems/mcuconf.h b/firmware/config/stm32f4ems/mcuconf.h
index 6befa3a076..d5e08e2aa9 100644
--- a/firmware/config/stm32f4ems/mcuconf.h
+++ b/firmware/config/stm32f4ems/mcuconf.h
@@ -77,7 +77,9 @@
 #define STM32_SW                            STM32_SW_PLL
 #define STM32_PLLSRC                        STM32_PLLSRC_HSE
 
+#ifndef STM32_PLLM_VALUE
 #define STM32_PLLM_VALUE                    8
+#endif
 #define STM32_PLLN_VALUE                    336
 #define STM32_PLLP_VALUE                    2
 #define STM32_PLLQ_VALUE                    7
diff --git a/firmware/controllers/algo/engine_configuration.cpp b/firmware/controllers/algo/engine_configuration.cpp
index 9f59dd6e91..a3b7f880f8 100644
--- a/firmware/controllers/algo/engine_configuration.cpp
+++ b/firmware/controllers/algo/engine_configuration.cpp
@@ -970,6 +970,9 @@ void setDefaultConfiguration(DECLARE_ENGINE_PARAMETER_SIGNATURE) {
 
 	engineConfiguration->alternatorPwmFrequency = 300;
 
+#ifndef EFI_COMMUNICATION_PIN
+#define EFI_COMMUNICATION_PIN GPIOD_15
+#endif
 	engineConfiguration->communicationLedPin = GPIOD_15; // blue LED on discovery
 	engineConfiguration->runningLedPin = GPIOD_12; // greeb LED on discovery
 	setDefaultBasePins(PASS_ENGINE_PARAMETER_SIGNATURE);
diff --git a/firmware/flash_dfu.bat b/firmware/flash_dfu.bat
index e1f0068394..9ccd20c0fb 100644
--- a/firmware/flash_dfu.bat
+++ b/firmware/flash_dfu.bat
@@ -2,4 +2,10 @@
 rem on linux that would be
 rem dfu-util -a 0 -D rusefi_release.dfu -R
 
+rem ..\misc\hex2dfu\HEX2DFU.exe build/rusefi.hex   -out build/rusefi.dfu
+rem DfuSeCommand.exe -c -d --fn build/rusefi.dfu
+
+rem Note that DfuSe_Demo_V3.0.6_Setup.exe does not install "stm32 bootloader" device drivers automaticaly
+rem You need to point Windows at a relevant folder inside C:\Program Files (x86)\STMicroelectronics\Software\DfuSe v3.0.6\Bin\Driver
+
 DfuSeCommand.exe -c -d --fn rusefi.dfu