Please download Dongle Manager from Here read Serial Number and apply with correct 8 digit Serial Number only 

Correct Serial Format:

28312ABC  = ✔

AB80CDEF = ✔

48AB7C01  = ✔

Wrong Serial Formats:

28312abc     = ✘

AB80-CDEF = ✘

48AB7c01    = ✘

Infinity-Box/Dongle 1 year Updates/Support Renew, Chinese Miracle-2 included
This service will renew CM2 software and Renew 1 year support at your infinity Box & Best Dongle & CDMA Tool.