hello.....one of my costomer buy a Indien manufaturer car Creta 2021....there is used smart key, He has lost his 1st key so ....i check which transponder is used....i try to red with XP400 pro, VVDI key tool max and KD-X2 they are not able to find which tranponder use in.... i try IM608pro to diagnosis... according to IM608 . this is 2020 Hyundai Creta (SU21).....HOW TO ADD KEY?