Huawei y330-u01 imei Rebuild ok but nv problem

Hi i have this phone in hand formated by other tool now no imei so i fixed it with NCK all success but still problem i need its NV file or this problem can be fix by write full rom from NCK SUPPORT area if yes than which file should i use here is log which shows success report but still imei problem
IMEI for write : 866508021992016
Scanning for presents meta ports…
Meta ports not detected, starting brom stage.
Curent Platform: MT6572
Phone must be off with battery inside.
Please insert USB cable now…
Detected(49) : PreLoader USB VCOM Port (COM49)
Starting META mode, wait…
Restarting, wait….
Restarting to meta,wait….
If drivers missing, please install CDC drivers.
This can take up to 5 min on slow phones.
If take too long, check device manager for drivers.
META Port Detected[23] MediaTek USB VCOM (Android) (COM23)
Start sync target, waiting responce…..
BaseBand CPU : MT6572, E01
SW_VER : MOLY.WR8.W1315.MD.WG.MP.V15.P11
Meta mode conected ok, start reading phone….
IMEI to repair: [1] 866508021992016
IMEI repair OK.
All done.