That is a very early, MKII era video module. It does not support the 16:9 view. I do not know of anyone who has found a way to modify an older video module to support 16:9. It is worth asking the German guy, but I would not be optimistic that he will have a fix.

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2000 E38 750iL Highline Edition, Upgraded with the lastest 2006 X5 Electronics
MKIV Navigation, 16:9 Display, Bluetooth, TV/Video with Backup Camera, Sirius, and Aux Input