I did find another program called python but with no explanation of what it's for or even if thats the update program.
There is an explanation but only written in German. At the moment the English speaking fraction is a little bit discremenated regarding the auto-update script.
Here a short description just for you:
1st: Download and install the python interpreter.
2nd: Download the script. Extract one of the files into a folder of your choice. Make sure you have enough free space (~4GB ) and doubleclick the script. You can find the current script and some descriptions
here.
That's not only an update - that's the full version.
My next task will be the translation of the full description into English, so be patient or learn German.