hi to all
as asked by Swordy hear are the links for the dvb-t tuner how to and where to get the dvb-t tuner and the dvb-t2 tuner
http://pibus.info/tv/ this is site tells you how to and which video unit is the easiest to convert
these links are where you can buy the tuners go to Aliexpress web site first
then look for the following tuners
DVB-T2 H.265 Digital TV For BMW E38 E39 E46 X5 E53 X3 E83 Z4 E85 ,Range Rover L322,Rover 75,MG ZT / MG ZT-T
DVB-T Digital TV For BMW E38, E39,E46,E53,E85,Range Rover L322,Rover 75,MG ZT
DVB-T HD MPEG4 Dolby AC3 Decoder For BMW E38 E39 E46 X5 E53 X3 E83 Z4 E85 ,Range Rover L322,Rover 75,MG
hope this helps david