In my company an ap model 3610 will be used, the equipment was configured in the past but no one have the configuration details, so i will need to reset to fabric.I already tried, to reset the AP by pushing the reset button for more than 30 secs and then trying to connecto to the device vÃa web with no success.
Bellow you can find the steps i followed.
2. All of the initial setup is done via a web interface. Connect a ‘Cross-Over’ Ethernet cable directly from the Management Port of the controller to a PC’s Ethernet port. 
3. Log onto the controller by opening a web browser and connect to 
https://192.168.10.1:5825/. The default username is ‘admin’; the default password is 
‘abc123’. 
4. Do this step only if it is necessary to reset the controller back to its factory default 
configuration. Browse to Wireless Controller Configuration and select System 
Maintenance screen. Select Reset database to factory default and reboot and click Apply. 
This will reset the database and cause the controller to reboot. It will take three to 
four minutes before the controller is finished.
I also tried to connecto to the Ap via serial, also through the switch with the ip apparently assigned in the past (obtained with wireshark and port mirroring) and i do not have chance to get access to the AP.
Anyone can share me the detailed process or how to make a fabric reset on the AP that apparently is not completing the action.