Can't seem to find solution anywhere. Running V30 OS on MkIV unit and noticed i was not getting use of the info and select buttons. Downgraded to V21 doing the radio on/off thing mentioned and buttons now work fine, but now lost split screen on radio which DID work before. Upgraded back to V30 but still no radio split screen but info and select buttons still work. Tried this time to downgrade to v26 and got radio split screen back but lost info and select again.

Like the poster above, is there no way to have use of split screen on radio AND info/select buttons working?

MkIV unit was an upgrade from a CD nav unit previous as i understand this may be an issue.

Can anyone advise?? Driving me nuts.

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BMW 530D Sport (2001 UK)
SATNAV Mark IV DVD
OS 4-1/91