Blaupunkt BP530 firmware update search

[GusGasfuss]

Hi,
i am searching for a new firmware/os/update for an motorhome nav system Blaupunkt BP530 (San Diego).

Currently it has
MCU Version: V0.44 Dec 4 2013
MPU Version: 133.152.V1.67_131210
MPEG Version: 01130902
OS Version: V1.46-04 2013-11-29

Does anyone have an update for this? Would be good, if in german or multilanguage.

Thank you!
Christian