Thanks ksiddiqi,
I borrowed one of my friend's Satellite pay channel subscription smartcard (but non Irdeto 2) and inserted to my DM500s, check CCcam Info's Entitlement and I can see some info to display there. So I am sure my DM500s receiver's CI reader works fine. But at the meantime, I found something different from these two cards. these two cards are looks like smartcard format but the Chips position and size in my Irdeto 2 smartcard is slightly different from my friend's smartcard (around 1-1.5 mm shift over), then I got one of my Bank's credit card which built in smart chip and compare with all their chip position and size. I found out only my Irdeto 2 smartcard is different from the other two cards (Chip size and position on Bank smartcard and my friend's Sat smartcard are both exactly the same). Just like to know if this the reason why my dm500s can not detect my Irdeto 2 card? Anyone with Irdeto 2 smartcard would you pls compare your's and normal smartcard and tell me the result. If it is the case, how can I solve this problem, should I need to replace my dm500s card reader or I can use some external card reader to get my card's detected. Thanks. (btw, my card is absolutly works fine in my two Irdeto embedded receivers. So I wonder if my Sat service provider they made this in purpose or All the Irdeto cards should be the same as my card). Waiting for your guys help.