A base station apparatus comprising: a storage unit configured to store an updateable file, being a software controlling the function of the base station or a firmware, necessary for operation control, being a reset control switching a power supply into OFF state once and into ON state again or an application updating of the base station apparatus, together with version information indicating a version of the file; a version information obtaining unit configured to obtain from the storage unit the version information of the file necessary for the operation control before performing the operation control; a communication controller configured to receive notified file version information; a version confirming unit configured to confirm whether or not the version information obtained by the version information obtaining unit matches the notified file version information; and an operation controller configured to perform the operation control when the version confirming unit confirms matching of the version information, characterized in that the base station apparatus is a femto base station apparatus, wherein the version information obtaining unit is configured to obtain the version information including major version information and minor version information, the major version information being upgraded when an improvement of the operation control or an improvement of critical security is implemented, and the minor version information being upgraded in the case of a simple version upgrade not including an improvement of the operation control or an improvement of critical security, and wherein the version confirming unit is configured to confirm whether or not only the major version information obtained by the version information obtaining unit matches the major version information of the notified file version information. a storage unit configured to store an updateable file, being a software controlling the function of the base station or a firmware, necessary for operation control, being a reset control switching a power supply into OFF state once and into ON state again or an application updating of the base station apparatus, together with version information indicating a version of the file; a version information obtaining unit configured to obtain from the storage unit the version information of the file necessary for the operation control before performing the operation control; a communication controller configured to receive notified file version information; a version confirming unit configured to confirm whether or not the version information obtained by the version information obtaining unit matches the notified file version information; and an operation controller configured to perform the operation control when the version confirming unit confirms matching of the version information, characterized in that the base station apparatus is a femto base station apparatus, wherein the version information obtaining unit is configured to obtain the version information including major version information and minor version information, the major version information being upgraded when an improvement of the operation control or an improvement of critical security is implemented, and the minor version information being upgraded in the case of a simple version upgrade not including an improvement of the operation control or an improvement of critical security, and wherein the version confirming unit is configured to confirm whether or not only the major version information obtained by the version information obtaining unit matches the major version information of the notified file version information.