Location update problems on Motorola C118 on real network (network location::india)

[prakash]

hi,
             i am using osmocombb in motorola c118.
                 when i load firmware (layer1) on phone and start the
application MOBILE,
              it gets all parameters from phone,
                     gets plmn
                     finds cell
                     but location update is rejected with cause ILLEGAL ME.
                     
                    i am trying in a network in india.
                    i dont know the real problem behind this. plz help me