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I bought a blackberry device last month from e-bay(T-Mobile Hungary).
I upgraded the OS to version 4.2.1.* with the device software provided by my service provide(Bharti Airtel India). But after that I am getting a connectivity error. It is saying that "Data connection refused".
I went to the customer care service and found out that the problem is with my device. What should I do now?
My question is as the device is from T-Mobile Hungary which device software should I use, the current service provider Bharti Airtel or T-Mobile Hungary.