It seem like your problem is with thw card, not the code. To confirm, swop the card to see if the other box work. BUT be sure if they are the same model.
Dun use a dm900 card on Fy901 then complaint cannot work. Of cos it cannot work cos both box have different box set key.
Dun use a dm900 card on Fy901 then complaint cannot work. Of cos it cannot work cos both box have different box set key.

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