Have you set an IP for the JapharFlasher and put the "v" in the box to use the ethernet connection / cable ?

It's necessary if you want the process to finish, you need as it seems to have the USB cable (that looks like working fine), but also the RJ45 cable from the box to the Router/Modem. To have validated the use of the network and be sure that the IP address you use for your DM800HDse box is valid for your network as well as it is not used by another device within your network.

Please check these things, as generally problems are coming from these errors.

Admin