havin problems flashing dm800hd plz help

[total newby]

hi can someone plz help me as im stuck stuck, i got a dm800 from a friend the other day, the box has no history and i dont even know if its a clone or original, it came with niablosat and blackhole image and it had a booting problem so i tryed to to put another image in and got error message no sim 2xx so i tryed to put another image in and now getting no ca message, when it was working it displayed on the screendisplayed Boot#72/20090303/bootlogo.elf/vmlinux.gz it said this as soon as i switched it on, so at the moment its sitting with no ca found and im not clued up with bootloaders can anyone advise me on how to fix it , at the moment its connecting through null cable and dreamup please help havent much of a clue really allan.

update i got this one to work- Nabilosat Enigma2 Black Hole - DM800 v0.12 FOR CLONE WITH BOOTLOADER 72 (Uploaded by westkill) workin well couldnt sus the bootloader out but i know its 72 yesssssssssssssss

[saalty]

Hi. You can fix it (if it's a clone) with this dreamup and null-modem cable: SSL82_DreamUp_dm800.rar (925 KB) let?lt?se
You can upload this ssl or latest 84b what you can find just google it. So upload the SSL (second stage loader) with dreamup (only need fee second. After you can flash an image via web browser (press power button on dm when you turn on and you can see ip adress what you have to type in your browser). This method works maybe for original boxes but with right ssl. You can see at the bottom of the box which sim has...