MMI / SatNav update query


Registered User

I've read a few thread and online articles about updating the MMI and Nav versions but I'm still unsure about a couple of things.

Firstly I have a 2010 A6 C6 with the MMI 3G High (hard drive jukebox and joystick in selection wheel), and the version information it is showing is:-

8R0060884J ECE 5.10.5

If what I have read is correct this is the 2012 software / maps.

My questions are firstly whether I can update straight to the latest version or would I need an intermediate update first? Also would I be safe buying one of the update kits advertised on eBay? They are advertised as being genuine Audi branded products.