Fortiap 221b failed firmware update

[technik]

I have a fortiap 221b, upgrading from 221B-v5.2-build0234 to FAP_221B-v5-build0245.

Device has become non responsive. Used the reset button to no avail

Is there any type of recovery mode for these devices?

[technik]

Ive now managed to connect to it directly from a pc, and update it to FAP_221B-v5-build0262-fortinet

DHCP enabled, the Fortigate 110C finds the device and I can authorise it but it appears offline. other 4 AP's onsite worked fine. 

[technik]

Resolved the issue, using the physical reset button would not work, but using cli directly to the device allowed me to run a factoryreset. device come alive again. 

Happy days

[Toshi_Esumi]

Did you press the reset button and hold it long enough? It takes 5 sec.