No Wi-Fi connection

[Flyguy]

Hi IHave a Tello iron man edition which I flew a couple of times no problem. I haven’t used in some time but recently tried to connect.Try as I may to connect to my iPhone XR would get the message on my phone unsecured network then no internet connection. Then thought it may need a firmware update which it did but downloaded to about 50% then froze. Any help out there would be much appreciated