It seems that the latest firmware for M4 V2 is still the Oct-2020 one. Perhaps that's why the E4s are not updating!

@TP-Link No. It always shows the main Deco as the signal source in the Deco App. Next time, it slows down, I will remain on that screen for a longer time and check again. Another nice feature in the...

@TP-Link Decos 1 to 3, we normally get around 130Mbps. Our internet connection is 150Mbps. On Deco 4, we get around 70 Mbps, which is acceptable as the signal source is not the main Deco. Every week...

I am having a peculiar problem. I have one M4 connected to the main router via ethernet cable (Firmware version 1.4.3 Build 20200918 Rel 74289) and 3 satellite E4s (Firmware version 1.4.3 Build...