I have Dynavin N6 on my E53 with DSP. If you don't care about wifi/internet, it's a good headunit- sound is excellent and it's the only system I know of that works with DSP with no modifications.

Here's a thread about its install on E53:

https://xoutpost.com/bmw-sav-forums/...tall-pics.html

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'05 E53 X5 4.4i, '97 E39 528, '07 E92 335i, '16 F86 X6M.