[Q] efs folder & Qualcom secure boot enable issue

Hi !!

I have got an issue after flashed a new Rom . Because of I didn't backup efs folder first. :(
When I was going to back up efs folder there was nothing in the folder.
Now how am I copy the file nv_data.bin file from my phone.

Further when phone is in download mode it comes with QUALCOM SECUREBOOT.

PRODUCT NAME - SC-06D
CUSTOM BINARY DOWNLOAD - YES (3 COUNTS)
CURRENT BINARY - CUSTOM
SYSTEM STATUS - CUSTOM

QUALCOM SECUREBOOT - ENABLE

Please help me.

Anushka