Update README.md

Author: ZephyrLabs

README.md

@@ -1,7 +1,9 @@
 # PinetimeFlasher
 GUI based app to help flash the pinetime with xpack-openOCD on windows, made with python and PyQT(for UI)
 
-to run the script you need Python >3.6 installed
+to run the script you need Python >3.6 and xpack-openOCD installed
+
+[how to install xpack-openOCD ?](https://xpack.github.io/openocd/install/#manual-install)
 
 make sure you have PyQT5 installed, it can be installed with
 `pip install PyQT5`
@@ -12,4 +14,4 @@ pip install pyinstaller
 pyinstaller -w --onefile PinetimeFlasher.py
 ```
 
-note: pre-made Executable and latest xpack-openOCD available in the releases!!!
+note: pre-made Executable available in the releases!!!