Reading/writing Device Name characteristic of BLE Device in iOS 7

Dear Apple,

I want to rename the device name of BLE Device. In iOS 6.1.3, I am able to write the "Device Name" Characteristic of Generic Access Profile Service. But in iOS 7 and later, CBPeripheral is unable to discover the Generic Access Profile Service(1800).

My Question is that Is it possible to read/write Device Name characteristic of BLE Device in iOS 7? If it is possible, then how can I do that? If apple has removed this support in iOS7 and greater, then what is alternate to do this?