diff --git a/BootLoaders/Boards/stm32/tools/macosx/serial_upload b/BootLoaders/Boards/stm32/tools/macosx/serial_upload
index 755444a..74bcc7b 100755
--- a/BootLoaders/Boards/stm32/tools/macosx/serial_upload
+++ b/BootLoaders/Boards/stm32/tools/macosx/serial_upload
@@ -1,2 +1,6 @@
 #!/bin/bash
-$(dirname $0)/stm32flash/stm32flash -g 0x8000000 -b 115200 -w "$4" /dev/"$1" 
+port=$1
+addr=$2
+file=$3
+
+$(dirname $0)/stm32flash/stm32flash -g $addr -b 57600 -w "$file" -v /dev/"$port"