I have an old DM800HD and its original.

Recently I tried to add IPTV on my device but I found need to change image, and there is many images for DM800 .

Also I don't know what is different on SIM models. and what is my sim. I guess in original models its not important.

My image now is Newnigma2 v4.0.1

Could you please help me to found true image for my device?