Quote Originally Posted by voyager56 View Post
After ergn,41 UnitID will remain the same. But if you lose model number, you will not be able restore it back. At least it's not easy.
I agree. (At least for you and me ., to restore model number is pain.)
I will lost many features if 3750/3760/3790 --> 37xx.
To lost Unit ID is not my big problem.