I have updated my router settings as per help file to work with new Apple IOS restrictions, but still am seeing "Weak Security"  and WPA/WPA2 (TKIP) is not considered secure in IOS WiFi settings.

My setting (for both 2.4GHz and 5GHz):

I have restarted modem and forgoten the wireless networks several times.

Based on thoses threads ( https://community.tp-link.com/us/home/forum/topic/236188 and https://community.tp-link.com/us/home/forum/topic/234786?replyId=513018), it seems a non official firmware (beta ? ) fix this issues... But the link (http://kb.tp-link.com:8080/s/5dLYTsiBPHJ8L5o) no longer works, where can I get this firmeware ?