OID to factory defaults on CG3000D

Hi I work in a ISP and I need to reset to factory defaults alot of CG3000D so I'm looking for OID of factory defaults.

 RFC1213-MIB::sysDescr.0 = STRING: "Netgear Cable Modem <<HW_REV: 2.01; VENDOR: Netgear; BOOTR: 2.3.0beta5; SW_REV: V5.5.4.mp2_RG18; MODEL: CG3000D>>"

Thanks for any help.

 

Regards