1.AD 900 Key programmer 2.Version:2.21 3.New function added: 8C and 8E chip AD900 can read out and ... ,40,41,42,44,45 and 4C.Function Three:Can write and unlock for the special transponders:1) Change ... with the Hitag 2 function.Support on programming the transponder key and remote for Audi A8, VW Touareg,VW Phaeton ... , E91, E92 EWS3, EWS3+, EWS4, CAS, CAS2, CAS3. car key programmer AD 900 Key programmer