Anyone struggling to restore thier nv backup file but cannot get LGNDP to recognise it can try this, it worked for me..
1 burn your nv.2 file onto a cd
2 delete the whole folder that contains the LGNDP files.
3 make a new folder and put LGNDP into it and then make a backup and restore of your phone using the download button..it will download and restore your ruined nv2 file with your emei and bluetooth address corrupted..let it do this and finish.
4 in the folder named NOT_ACTIVE, you will now have a corrupt .nv2 file..so make a note of its filename and then delete it and replace it with your good nv2 backup file from your cd that LGNDP would not recognise or said did not exist and rename it to the original file, then restore..and bingo.
unlocked my lg viewty but messed up bluetooth and emei..but all ok now
it worked for me..thanks for the software..but a good nv2 backup is maximum importance.