MAG 322 Factory Reset & Configuration page 10

In some instances, some MAG boxes will not fully factory reset due to custom firmware
having been loaded onto the box by the previous vendor.
This occurs because the software loaded was unofficial customised firmware and has been
designed to prevent factory resets.
If this is the case, you will instead need to reload a completely fresh copy of the official
Infomir firmware for your model of MAG set top box or replace your box entirely.