my PR number is 299 (Australian variant), as suyog suggested I tried to flash cmt only from chinese variant (16GB Black) but no use. Just some added information and assumption on the basis of my understanding. I assume that the issue is due to the mobile is unable to retreive the IMEI number. Basis: Any Nokia Application is not working correctly which I guess need IMEI number to register. For e.g. Unable to set Nokia account under Accounts & Nokia Store. So I rule out the chances of HW issues related to SIM. Also, as I m able to see the IMEI number using "cat /proc/cmdline" so I suppose no hardware fault there. So the whole issue is due to IMEI number not retreived. May be I m wrong but I will be more than happy if someone can enlighten me with the whole issue. Please note that I have read all pages of this thread and Reflashing guide so don't think I am writing without searching and reading. Also, all this happen when my phone was working and getting charged through my office desktop and suddenly the world standstill. Request to all geeks.. please have a look into it... since yesterday I came to know that many people are facing this issue and the number is increasing day by day.