Check the instructions below.
Go to Immo Programming->Aisa->Toyota-> Select by type->All smart remotes lost->8A 2016- P4 Page A8/A9/AA->Start Programming
Select Device Binding Adapter function
Follow diagram to connect XD8ASKGL 8A AKL adapter with key tool plus and vehicle.
Press OK to combine.
Xhorse Key tool plus has been combined with the adapter.
Now you can backup smart box immo data and program proximity key.