@really-annoyed Hi, there is a firmware 1.6.0 (For Deco M5 only )available for trial and if you are interested, please have a check of your message box. Thank you very much.

@DonDrone Thank you and please keep me updated whether the problem is fixed not.

@Amit_Dey Hi, please refer to this link to have a look： Adding an additional unit to your TP-Link Deco network

@Deceptive Hi, the firmware upgrade is applied in sequence to the correct devices during the release process. And not all users will receive the firmware notification in the first place. So it is...

@gnosticeye Thanks a lot for sharing. It would be very helpful for us.

@weikianng Hi, Deco M9 plus does support cat8. And M9 Plus is Gigabits Ethernet port, maybe Cat 8 is too much for it.