JapharFlasher works with all Sims, it's an Universal DreamUp,

http://www.ourdreambox.com/ubbthreads.php?ubb=showflat&Number=2012#Post2012

You find it on the Japhar boxes, you will need at least the RS232 cable to your DM800HDpvr.

But if you have "error" in your sim, it looks like the sim is not communicating with the motherboard, try to remove, clean it and reinsert it to see if it boots ok.

TS
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DM8000, DM800se, DM500HD, DM800HD, DM7025, DM7020s, DM7000, DM500s
VU+ Solo, VU+ Uno, VU+ Duo, Kathrein UFS910
Tivusat, TNTSat, Fransat, SSR/TSR, BBC1-2-3/ITV
DE-OpenBlackHole 1.4 image : http://www.openblackhole.com/