It is a wired connection, of course (I have the original enigma2 image and as far as I know it has no WLAN support). I am trying to flash the [Moderator] Image is in violation of the Boardrules [/Moderator] image to get WLAN support, but I will try others, as suggested here.

UPDATE
I have tried other images, with the same (broken) result. Besides, I have noticed that original enigma2 images are larger than others, so the image size I think it is not an issue. I will try as last resort to use a windows pc but, if I get the same broken results with windows software, can I send the unit back to dream-multimedia within warranty? It is a brand new unit.

hello,
I have just bought a dm800 a few days ago. I have also got a linux laptop without windows and wanted to flash the dm800 from there a new image. I used the web interface and the recommended Mozilla/Firefox browser. I saw the IP device and the ping was succesfully after stopping the boot following instructions. The problem is that when I click the button "flash" on the web page the file transfer stops after about 60 seconds; worse the device becomes frozen and pinging is no more responding. The device becomes forzen and not responding to anything.
I tried to update software from the "plugin" menu; it upgraded 11 packets but the web interface-second stage loader method gave the same broken result.
Next I tried to run the DreamUP software under emulation with Wine: it failed to start saying it couldn't find any com ports (false: I do have a serial port).
I have also telnet the box, but I don't know if this could be used to flash an image.
So far I have been unable to flash a new image from linux. Should I use a windows pc to flash a device with linux in it ?!