My EX4 have two Raid1 Volume with four 2TB hard.
First Raid1’s name is Volume_1 other is Volume_2.
When I setup EX4, it’s firmware version is 1.02.08 (Initial Release).
I had copy my files to EX4 and setup all users, groups, shares…
and I update firmware with 1.02.36.
It’s was possible that add new user, group, shares,
I could change Volume_1’s authority,
but I could not change all authority setting of Volume_2.
so I downgrade firmware to 1.02.25 but It’s same.
so I receive new EX4 from my local supplier. I do restore setup from older, and backup to newer.
All operation was normal, but It’s fimware was 1.02.08. so I upgrade firmware wih 1.02.36.
and then It’s sign was regenerated.
Finally, I do downgrade my older EX4’s firmwar to 1.02.08. It’s operation is normal.
I think this is BUG with certainty.
To find out this problem, it took fully two weeks. -_-;