No more wifi at all from drone!

ANAFI USA / ANAFI Thermal / ANAFI 4K
1

Hello,
In FreeFlight 6 / Parameter / Network / Wi-Fi band, being connected to ANAFI, I simply went from “AUTO” to “MANUAL” and chose a channel in the 5Ghz band: So I instantly lost the connection with ANAFI.
But now, ANAFI no longer broadcasts any network SSID, neither in 2.4 nor in 5 Ghz.
In order to “reset the config”, I pressed ON / OFF for more than 8 seconds, the 4 red LEDs on the battery were activated, but no “.txt” file appears at the root AND ANAFI still no longer broadcasts any SSID.

2

What is the model of the phone you are using ? Does it support the 5GHz frequency ?
Thanks