DM800Hd pvr

Have a dm800hd pvr that had error no ca, I found the bootloader and got it back up but
now I want to flash it, I have found a few different flashes but not sure how to load it, is
there a certain loader that I have to use and if so where would I find it.
Thank you for your help

I tried to flash the dm800hdpvr with blackhole 2.1.5 fix. clone.sim2 but it stops at 96% this flash is a SSL84D , not sure if this is the problem but my box has 84B, is there another flash that i can use or do I have to change mine to 84D and if so how would I do this.
and the box is a clone
Thank you