A hand held self contained cleaning apparatus includes a reservoir containing a single use cleaning andor disinfecting liquid, a pump, and a nozzle for directing a spray of the cleaning andor disinfecting liquid against a soiled nipple of a pacifier or baby bottle cap. Consequently electrical reliability and safety can be remarkably improved. The second operation voltage supply circuit is electrically coupled to the bit line and the complementary bit line and used for supplying a second operation voltage. A second housing is assembled to the first housing. The preparation may also include checkpointing partitions within the upgrade domain to facilitate faster loading once transferred to a domain other than the upgrade domain.