0
Your sim is SIM2 and it seems Sim 2.0 (T2 for DM800HD) or maybe Sim 2.01 (T2 for DM800HD)..
So try to flash these bootloaders...every time test bootloader after flash it turn off box and then turn on if "Dream Multimedia" still appear so your sim corrupted need to change it..
or To check it and try to fix it by cardreader "Gemplus GPR PCMCIA" from here you can buy it
And don't forget just use "Null modem cable only without Network lan" method...
Bootloader 76
bootloader 84b
So try to flash these bootloaders...every time test bootloader after flash it turn off box and then turn on if "Dream Multimedia" still appear so your sim corrupted need to change it..
or To check it and try to fix it by cardreader "Gemplus GPR PCMCIA" from here you can buy it
And don't forget just use "Null modem cable only without Network lan" method...
Bootloader 76
bootloader 84b