Imei changed n7100

Hi developers pls help me...
I am using gt-n7100. I installed twrp recovary and dn4 v2.1... everything was perfectly installed and working very nice.. but after few hours leter i switch off my phn for charging bcoz my battry was down... after compleated my charging when i switch on my note 2 .. the signal was not detected.. i tryied many times... search network from manual mode.. when its not detected i thaught to check the imei number. And i was right . my imei number is changed to 0094xxxxx