2004 ML 350 Key programmed with Xhorse Superchip & FVDI 2018 Successfully. Tango failed to program!!

Hello Everybody here I am working on a 2004 Benz ML350. I originally planned to program by removing MCU (1D69J) and making key with Tango but that failed.. So I then used VVDI mini key tool to generate a ML transponder with a Xhorse SuperChip. I then used FVDI 2018 to program the generated transponder into unused key slot 1. I completely forgot that I had FVDI 2018 tool as it was collecting dust and had not used it in a long time.. It's always best to have full backup of data in any MCU or Eeprom because if you mess up you can always restore original data.. Especially with European vehicles, also it is not to much work once you get used to microsoldering. Thankyou for watching please Like and Subscribe.. If you have any questions or need any work done please feel free to contact me on whatsapp. I will soon start doing data recovery as well on this Channel in the near future.. Stay tuned for updates. . Have a Blessed Week