Restoring an efs from another phone is illegal as you are attempting to alter the imei, Samsung have obviously prevented this.
If you have the phone's original efs backup, from before you restored the twrp backup, then I'd suggest you use it.
This thread will probably be locked by a moderator.
Note: This quote doesn't automatically apply to everyone, decide for yourself if it might apply to you.
Originally Posted by justruss
What has this place become?
It's essentially a few people graciously answering the same repeating of immature, lazy, demanding questions from the masses.
Nobody searches. Nobody reads the first posts or titles of threads. Nobody even looks at posts a couple above their own.