Believe me, I've tried ALL possible configurations, even if they were totally pointless... Since RUT950 is an older device and only allows FW 6xxx, I've tried the same with RUT240. RUT 240 has FW 7xxx, I can't read the exact version right now. Although it offers a newer version when checked online, the update fails due to incorrect chacksum...
I managed to log on to the vodafone network a few times, but the data connection was always down.