OK I' ve finally manager to install the new 1209 image and access to the telnet to modify the boot video mode. Auto didn't work so I put PAL and RGB and I can now see the DM800 first bootlogo. But after the bootlogo isdisplayed the screen is still wrong between the bootlogo display and the end of the loading of the flash image.
Is there anyway to put PAL+RGB for the whole boot sequence ?
Thanx for any help ?