Thanks for the reply salvatore, even if not exactly encouraging.
I guess it's not a priority for google as it's quite an old machine by now.
Though I am not techie enough to really understand why it can be done on some units and is apparently more of an issue with others. After all, both my chromebooks seem to have the same capabilities/power on the face if it.
I don't think i will be buying another machine while these two are both running fine. Maybe I'll invest in bigger panniers and take the bigger one.