Last year December I got a Nokia X3-02. The sad thing I got in this piece is it reboots on a random mode. Every now and then it shutdown completely and I have to take away the battery and place it rear as a result it will boot up again. I have changed the security code but it says the code is wrong. There are no new messages but still the phone telling me that there are unread SMSs. Other than this there are further small issues like no Facebook notifications, unable to open email etc. Some apps seem to be very low. I think that there must be an OS problem in this mobile. Do you think that I should update it? Is there any fix for this issue without updating firmware?