@Tony I have used your guideline about updating the firmware first. But there is still a problem i guess. I upgraded my 3 v2 decos to version 1.4 first by using the utility because updating to 1.5.0...

I have 4 deco m9 plus and bought another m9 recently. 2 of them has v1 and the other 2 and the new coming is v2 hardware. So, 2 v1 and 3 v2 decos. Thus, i have 2 different firmware versions in my app...