6531d not connect on miracle

Sir I Have 2 Miracle Box

1st Box 2year Old
2nd Box 6Monty Old

My 1st Box 6531 Connect With Usb And Rx Tx V2.05 (Without Key)

And My Second Box Not Work On 6531
I Will Try USB, Rx.Tx
Same Laptop, Usb, Main Cable, Rx Tx And V2.05 (Without Key)
But 2nd Box Not Connect 6531
Help Me Pls:confused: