A method of managing
bootstrapping of a
client of a utility metering device in a Lightweight
Machine to
Machine (LwM2M)
system and comprising: configuring the
client with a security object comprising a first bootstrap security object instance associated with a first bootstrap
server, the first bootstrap security object instance comprising data for use by the
client in establishing communication with the first bootstrap
server; establishing, by the client and with the first bootstrap
server, communication using the first bootstrap security object instance; configuring the client, by the first bootstrap server, with one or more further security object instances; validating, by the client, the one or more further security object instances; persisting, by the client, when the one or more further security object instances are validated, the one or more further security object instances in place of the first bootstrap security object instance.