Head unit no AUX sound or joystick responding

[windsailor]

Two months after replacing oem screen with inav, the head unit is not responding to console buttons or rotary joystick. No sound from AUX but, head unit DVD and radio works well. Got a quote for replacement with Pioneer unit but, it's expensive and can't wrap my head around having two screens and missing all BMW apps (TPMS, car info, etc). Buying a used knee from ebay is risking failure/mismatch and not guaranteed will work.
What would you do? 2013 x5m, thanks.

[jbash87]

Don't go the alpine route. Buy a used one and replace it. Should be a simple coding job (default coding to your VO in NCSEXPERT) to get it functioning. The NAV and BMW apps will require FSC codes or patching.

[argento]

If you haven’t already, put the oem screen back in and confirm the issue is on the oem side.

[windsailor]

Thanks, already passed the OEM screen to someone else