Scroll all the way down at this page https://tools.developer.homey.app/tools/system, you’ll find a “Restart into recovery mode” button. Just wait a few minutes with this after Homey started up.
Afaik Iphones seem to want an acknowledgement if you connect to a wifi point which doesn’t have a connection to internet, like Homey in startup mode.
Isn’t there a “No internet? OK, but connect anyway” button or something popping up?
Otherwise, grab a device with a Firefox browser and proceed without the Iphone,
and follow procedure:
Dit heeft er nu niet direct mee te maken, maar wie weet:
Je wifi tijdelijk even ‘downtunen’ kan ook geen kwaad, Homey is vrij kieskeurig en snel van slag