@hakort Ok I found it. My iPhone app didn't show there was a new update. I had to install the Upgrade Tool first which installed the August update file from the site. After that installation, the app...

@Alexandre. Ok, thanks for this information. But when I push the button 'Update Deco', it says my system is up to date, showing the old Firmware version 1.2.11. How can I update to this much newer...

@TP-Link_Deco Hi, I have a a Deco M9 system, updated to the newest firmaware version 1.2.11 Build 20190926 Rel. 55727 and I keep getting the WEAK SECURITY message on my iPhone with newest iOs 14....