@TP-Link thank you for your response. All interaction with my Deco E4's has been done via the (iOS) app. The updates appear to have happened automatically and when I have actually tried to update via...

I think Source Selection should be a priority! Currently, I have Deco E4's that ignore the nearest and strongest signal and will only to connect to a farther away weak signal! Please sort this ASAP.

I added 3 more Deco E4's to my home network today and am having some issues (different issues so I guess I should post separate questions for each?). Firmware; I've used (phone app) 'More-Update...