Default Please HELP!!

Gurus in the house i realy need a helping hand....i formated my GIONEE P2 using sp flash tool and reztored it back...but after that my phone shows invalid imei....i repaired d imei issue using mtk droid tools...but the worst part is that whenever i hard-reset my phone it shows invalid imei i have to restore using mtk-droid toolss....please is there a way i can replace imei permanently because i want to flash a rom but the imei stuff is bothering me...please help me overcome this problem...!!

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