I dont wish to be rude but if you dont know the basics of a braking system it probably isnt best to start to learn with a bit of DIY.
Ive done it on LS400 before, and it had different set up (two screws). And Is200 does not have it. So I thought maybe theres is something else holding it.
Anyways, thanks for all your advice guys. It is sorted now.
The problem was, the hand brake did not disengage completely.
Thanks .