So I have an 04 X3 which has an OEM flip up Sat nav. Problem is, the GPS no longer works properly. From freezing to giving me wrong directions and taking me in circles, I need to change it. I really don't want a replacement MKIV, as I don't want to pay $$$$ for old technology. I want to have something like this:

YouTube - Mio C728 in BMW Flip Up

Basically they took a mio c728 and put it in the flip up housing of the old sat nav.

However Mio units are hard to find nowadays. Anyone else have an aftermarket replacement for their sat nav unit in the X3? What are my best options, I want to make it look as OEM as possible. I've tried updating and what not, I just want a new one. Also, I'm looking at getting a dice soon for ipod stuff. Thanks in advance, and please let me know if I forgot to include some info.