@Vauxdvihl See of this helps: Paint Your Home in Wi-Fi/ Let's begin on the Deco APP

@aujjobba If the firmware version is 1.6.0 build.220525, it was released on June this year, so it's clearly not "from 2021". What's the hardware version & firmware region? It's written under the Deco...

@Vauxdvihl If you have your old smartphone, are you logged in the Deco app there?

@vinothbabu You mean you didn't set up the Deco M5 using the app? Then how did you set it/them up?

@Sumiaryan What's your Deco Model? What's the hardware & firmware version? If no update shows up in Deco app, have you tried manually updating via web ui?

@PravakarP You mean you did everything mentioned in this link, but the problem still persists?