Here the tutorial on programming Audi A6 2009 8E Transponder key by using original Xhorse VVDI 2 Commander key programmer.
Well set up and open VVDI2 software
Select vehicle brand: Audi
Switch on ignition with original key
Select Key Learn->4th immobilizer system-Audi->Audi A6/Q7/Allroad
Select chip type and click on read J518 eeprom dump
Read Component security bytes and PIN(Login) Code
Confirm info. and press OK
Switch IGN off and switch it ON
Write Componet security bytes and PIN(Login) Code
Put Chip 8E into VVDI2
Follow software prompts until the procedure is done.
Program Audi A6 transponder key is done!