B5, cant discover the ARP-XXXX SSID for hard reset

Hi All
I have a B5, that has to be hard reset. But if i follow the guide:

  1. Turn Off(disconnect)
  2. wait 3 sec minimum
  3. Turn on. (only PoE with no data)

The B5 should for apx 5minuts send the ARP-XXXX SSID, so i should be able to connect and reset. But the APR-XXXX never shows up. And i have two PC’s, and three mobilphones scanning for SSID’s. Any one ??
Best Regards / Michael

This might be helpful:
http://backhaul.help.mimosa.co/bh-ug-reset-no-wifi