Posted 12 Mar 2019 Dear All, I have uploaded program NT31C-ST141-EV2 and now I have HMI NT31C-ST141-EV1. I am trying to download the program in EV1 but software shows error as attached. I have program in onw formate and can open in support tool. but if I go to PT settings, I don't found V1 there. can you please tell me how can I change EV2 to EV1? waiting for reply. Thanks Shoaib Share this post Link to post Share on other sites