redmi note 4g 2014712 a/c

redmi note 4g 2014712 recd for mi account ..for lock flashed with
dior_global_images_V7.0.5.0.KHIMICI_20151016.0000. 3_4.4_global_aa6afe7015.tgz

after flashing account removed and new account created for mi ..then again updated for miui8 by flash and by wifi also but its asking again old mi account ..after update it should be ask which one created by me after flash but its asking old one again ..how its possible..not understading..pls help experts