If you are attempting to download to an HMI/PLC and the download manager displays ""Device not responding"", check that the physical connection between the HMC and PC is secure.
If using Ethernet, make sure the PC can connect to the HMC by "PINGing"
the IP address of the HMC.
If using USB, confirm that "HMI USB Device"
shows up in Windows Device Manager. You may want to refer to Tech Note 7017
AFTER considering the next step.
On the HMC screen, delete the firmware by holding the top left corner of the screen while powering on. Then delete the application by holding the top right corner of the screen while powering on. Now try downloading the project to the screen again.