I have a couple ZD1106 that are exhibiting the same behavior. It will not save it's configuration, and after every reboot it is factory defaulted. Additionally, I am unable to upgrade the firmware. It starts to upgrade, the lights look like a normal upgrade, but it never completes (waiting 12 hours once). Cannot access web or ssh on the ZD, and the only way to get back in is to reset it, in which it is factory defaulted again.