Hello Balocco,
To the informations I have, your sim is a DM800HD Japhar Sim, and naturally any other image (eg. DM800HDse will show that error if your box is a DM800HD, as both are completely different hardware).
So if you have as I believe a DM800HD box with a SuperSim3 Japhar NC3, the best to use is the OpenPli 4.0 IPTV, where you can install with only few commands the A867 DigitalKey.
Image OpenPLi 4.0 Download here :
http://www.ourdreambox.com/ubbthreads.php?ubb=showflat&Number=2294#Post2294A867 Installation, see the 4 commands explained on the topic :
http://www.ourdreambox.com/ubbthreads.php?ubb=showflat&Number=3377#Post3377That are (to be sent connected in SSH or Telnet to the box) :
opkg update
opkg install --force-overwrite v4l-dvb-module-dvb-usb
opkg install --force-overwrite v4l-dvb-module-dvb-a867
reboot
Then you should have the best of what you want, including IPTV.
TS
P.S.: You can also install the DE-OpenBlackHole 1.4 that will automatically detect your A867 DVB-T dongle and install it, with no further need of configurations. But my image doesn't support IPTV.
Link :
http://www.ourdreambox.com/ubbthreads.php?ubb=showflat&Number=371#Post371