Multimedia interfaces USB, rear cam, DAB, TV

[libra007]

I have recently bought my first X5 i wish to add rear view camera, a USB connection, DAB tuner and a TV tuner if possible. Rev Cam and USB are a priority others are nice to have

my car has got professional nav, bluetooth and a CD, DVD Nav drive, and a CD changer in glovebox

After searching forums and online still a bit confused what retrofit path i should go for..
Dension offer decent controls and option for audio but i cant see its offering AVR option anymore unless i buy used or old stock.
others found fistube, dvbLogic etc
for rear view camera whats best, OEM retrofit offered by BMW or aftermarket?

I just defected back to BMW from Audi world after selling my A6, know how to program CANbus for VW but BMW looks to have more learning curve to program. So i would be able to do some basic coding stuff too i believe fingers crossed.

Please advise and share your experiences for the above.

Thanks

[libra007]

no replies, may be I have asked too many in one post!

[Horizon]

What version E70? Is it an LCI, with the latest version of IDrive ? Has it not already got the USB in the armrest.
Someone on here had A DAB retrofit done recently, non OEM but fully integrated.
Also reverse camera kits are available on line.
Sorry don't know what AVR is

[libra007]

Thanks for reply its a Pre LCI and has only Aux port no USB interface

AVR is Audio Video Router or multimedia interface mostly for video inputs ie TV, reverse Camera or other video source.