Seem like the only way to resolve this issue was resetting all of the deco's by pressing the reset button on the bottom of the routers. Once I have finished resetting all the routers, I wired only...

Receiving a firmware update for the XE5300 from 1.1.11 to 1.2.2 and the connection has not been stable ever since the upgrade. Is there any way to downgrade the firmware?