The devices are resumed to default setting through the RESET button of Firewall by customer as a misoperation, the object is to help users get and resume the original setting.
After logging in to the firewall with default username and password, use DIR command to check if the original settings exist, then modify Starup and save the configuration and reboot. The fault is solved.
Even if Huawei firewalls are reverted to default settings, customer original configuration files still exist in FLASH. Modifying the startup option can make original setting resumed.