E410 Fail to ugrade to

I did reset factory; then i ugrade to, but fail to ugrade, after reboot AP e410 did not start; there is no leg; i follow this power ON and off for 9 times with interval of 15 Sec (ON) and 5 Sec (OFF); but there is no result
please someone can help or support me?

If you haven’t already, please raise a support ticket: