If you did not completely lock in the rear bow of the frame to the rest of the top, you will need to either try to get a strap around the whole top that is in the soft top hatch and use the strap to pull up whilst standing in the car on the tunnel or try to get hold under the bottom/rear frame to lift up at the same time trying to lift the middle of the soft top.
As Cess said, there has been lots written on here on this problem.