@Solla-topee I have bought my Deco system in 2023 and i dont think that they are still in warranty. Today i have noticed when i connect ethernet cable with PC and plugged power cable so the Deco goes...

@SayeemAhmed Yeah 1.8.1 works great for me too.

@Dave51 Yes all Deco models are compatible with eachother.

@Solla-topee Failed everytime after 5% and LED lights are yellow, red, green, blue and then again red and yellow and keep stuck on yellow. My Deco is dead after voltage fluctuation i think.

I tried to install firmware by using HTTP Recovery Mode but failed everytime. Maybe my Deco M4 is dead after voltage fluctuation. I tried after changing adapter but nothing happend.

@aminulzx You can update to 1.4.0 latest firmware.