You cannot use the online program any longer ... it has been closed down. And if you used a different method to file the NJ return to start with trying to amend just the state will be a big pain in the butt and expensive. I highly recommend you fill in the NJ amended return manually using the info on the correct TT return and the original NJ return ... you can find the forms needed on the NJ website. The amendment must be mailed in.
