Your 5er was manufactured by the same folks that built my Alpine so my experience may help. I just replaced both CRTs with LED/LCDs. Both TVs had screws up through the bottom of them. The front TV over the passenger's seat had the screws installed then the padding put over the screw heads, bedroom TV I could get to the screw heads by removing a drawer. Front TV took a crowbar to get out.
The above post is just my experience/opinion which is worth exactly what you paid for it.
'05 Lance 845/'06 F-250 or '99 Alpine 36SDS Usually towing an '01 Wrangler locked on 35"s or moderate '98 Cherokee on 33"s (rear locker only)