Factory reset for ECS4120-28T

Hi,

I have forgot password for admin console can you guys help to factory reset edgecore ECS4120-28T

Details,

Hardware Version : R01
EPLD Version : 0.00
Number of Ports : 28
Main Power Status : Up
Role : Master
Loader Version : 0.0.2.6
Linux Kernel Version : 3.6.5
Operation Code Version : 1.0.2.21