30 Pin to Lightning connector - HELP!!!!!!

[Texas0073]

Anyone can assist ?

Purchased Audi A4 2012 , comes with 

Blue dongle - 30 pin AMI, Part - 4F0 051510K

System is 3G MMI - BASIC

Has anyone else had this and managed to get cable to support newer iPhone with lighting port?  

Nearly all cables online claim to do this but you must have 3G MMI - HIGH. 

After research online it seems to be 

4F0 051 510AC but unsure to fork out £40 for it, if there is a much cheaper option. 

Contacted local Audi who said they have a AMI for it - can’t give me part number and would £52