Hey TP-LINK !!

Today i was trying to put my Deco units into Recovery Mode by holding the reset button before powering ON the Deco and keep holding the reset button for 10-20 seconds after powering ON but nothing work. I tried on 3 different Deco units of M4 but nothing can work. Before the firmware update 1.7.0 or 1.8.0 Recovery Mode was working fine. I'm pretty sure this is a firmware issue. I was trying to install firmware 1.6.5 on my whole Mesh System because of the client list issue regarding (Other) category in Deco App after the firmware 1.7.0 so i decided to go back but the Deco units can't going into Recovery Mode i spend more than 1 hour but i wasted my time on that. Kindly fix it ASAP.