Remote generate by VVDI Mini key tool
Remote programming by xtool x100 pad
Step 1: Generate remote
Remove remote PCB and connect it with vvdi key tool via USB cable
In VVDI mini key tool App, select Vehicle Remote->VW->Polo and remote type
Press Generate
Generate remote success.
Install battery to the remote and install key shell.
Step 2: Program remote
In X100 pad, select Immobilizer->VW/Audi/Skoda/Seat V27.59->Program remote->Turn on ignition switch->VW->09 Central Control (CANBUS)->Type 1
Press any button of the remote key
Program remote success.
Done.
http://www.key-programmer.org/2019/09/06/program-vw-polo-remote-with-xtool-x100-pad/