sounds like improper NBT2 coding for CID compatibility.
took my F34 back to stock from F15 CID screen retrofit, and when VO_Coding back to stock, based on OTA updates, the iDrive version was set to id6_lite and the screen output coding was not coded correctly for the APIX2 24 bit color screen
seems like an OTA software update bug for NBT2 systems
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