reset to factory

hello

today i am facing issues with resetting my router (951-2n) to factory settings.
what i need, is to have the exact configuration as when the router was powered up for the fists time ( 192.168.88.1)

i have tried soft/hard resset and also netinstall but the router everytime boots with no configurations and i must connect through winbox
to start configurations

any help?

thanks

Are you using v6.x ? Some of those had no factory config.

If using 5.x, simply netinstall.