D-Link DI-1162 - Manual (Page 137)

DI-1162 Remote Access Router
PROM System Configuration 127
Please make sure you wish to wipe out all settings and configure the
router from scratch before you perform a factory reset.
Execute Bootload
Choosing this option accepts the changes made in the PROM program
and begins the router’s startup sequence.
Executing a bootload can also begin the Software Update procedure, if
enabled.