Xhorse Vvdi prog and Tango success on Great Wall (GWM H5) with Delphi immobilizer box 3605130.
Read Delphi immo data with vvdi prog. it will show you wiring diagram.
Write key with Tango key programmer
You can even do it by obd after you get the pin good work.
even cheap tool like SKP900 or Obdstar X300 DP plus works good once you got pin and you don’t have Tango.