My Avin unit arrived the other day and I hope to tackle installation tomorrow. A few remaining questions before I begin...

How do I install apps, software/firmware updates to the unit? WiFi via hot spot? Thumb drive? It seems iBus app is updated frequently.

Are the coding options in iBus for things like fog lights as cornering lights and turn signal changes pretty obvious in the app? I haven't seen a thread devoted to programming options but I probably missed it.

I was planning to run one of the USB cables into the glovebox for easy access and the other behind the climate controls for CarPlay access through the ash tray. Other suggestions for USB cable routing?

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2005 X5 3.0i
2003 530i Sport (former)
2014 Audi A6 TDI Prestige (daily)
2018 MB C300 Cabriolet (wife's)