Hi Screenie,
As u suggested i upgrade the version to 6.1.0r3, but the problem is same. it work for sometime but after couple of hour. i stop responding. When i reboot the device then its start working again. I was confuse that is that a problem with Hardware of Software.
I'm attaching the device tech support with new version. kindly let me know if you can help me on it.
Thanks and regards,
Kamran