Null imei problem

Hi. I root my M3s and changed imei with chamelephon. Than my imeis delete…how can ı reset to original. İmei 1 and 2 are null. Ty. I upgrade flyme to but nothing changed. Can anyone help me. Ty

@ulubir dial ##3646633##

slide left>>>open cds information>>radio>>phone1>>
here you will see AT+

type E and you will see AT+E7"“
put yor imei here from the box of phone here like AT+E7"IMEI” between 2 comas and also give a space between AT and + sign and just set

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