80c brick because FortiCloud

[nbctcp]

I join my Fortigate 80c OS ver 5.6.12 to forticloud by 

-login to my fortigate and click Main

-on the right side click FortiCloud adn login my cloud a/c

I can see my fgt added into cloud but when I click Manage all of sudden

all INTERNAL port led on

STATUS led RED

DMZ led on without cable connected

console none appear

seems like brick

It seems FortiCloud is like suicide software

seems no reset button

what should I do next

tq

UPDATE1:

-reseat battery for 1 minute, after that I can login as maintainer

doing exe factoryreset

now I can see from console, it keep rebooting

UPPDATE2:

-seems back to normal after reseat battery after 5min, factoryreset then set ip in wan1 and internal will keep posted

UPDATE3: the only permanent solution seems reimport firmware

Press any key to display configuration menu...

: Get firmware image from TFTP server. : Format boot device. : Boot with backup firmware and set as default. : Configuration and information. : Quit menu and continue to boot with default firmware. : Display this list of options.

Enter Selection :

Enter G,F,B,I,Q,or H:

Please connect TFTP server to Ethernet port "1".

Enter TFTP server address [192.168.1.168]: Enter local address [192.168.1.188]: Enter firmware image file name [image.out]: FGT_80C-v5-build1701-FORTINET.out

Save as Default firmware/Backup firmware/Run image without saving:[D/B/R]?d

[nbctcp]

the only solution is reimage firmware when booting

Press any key to display configuration menu...

: Get firmware image from TFTP server. : Format boot device. : Boot with backup firmware and set as default. : Configuration and information. : Quit menu and continue to boot with default firmware. : Display this list of options.

Enter Selection :

Enter G,F,B,I,Q,or H:

Please connect TFTP server to Ethernet port "1".

Enter TFTP server address [192.168.1.168]: Enter local address [192.168.1.188]: Enter firmware image file name [image.out]: FGT_80C-v5-build1701-FORTINET.out