For MQB with blade you need original key only.
If it is smart keylessgo you can use this precoded. MQB KeylessGo 434 V3 is working.
Golf VII 2017 and 2018 work perfectly.
Better do an auto detect immo type. It cannot do JC instrument.
Read eeprom and save. Always backup data before operation.
1). Read immo data. Get CS, PIN and VIN. If failed to read immo data, do the correct procedure and keep trying. Quit operation if it cannot read immo data.
2). Make dealer key, read original key then put new xhorse key
Make dealer key with obdstar using xhorse key, for smart keylessgo only.
3). Program key.