SW Pack activity states are: active (1) - is set upon SW Pack installation starting process. Only one SW Pack may be 'active' at any given time. When a SW Pack becomes 'active' agent sets 'readOnly' bit of the fileSystemEntry.fileSystemValidIndication object. In addition the agent shall mark the previous active SW Pack to 'previousActive' (see below description of 'previousActive (3)'). ready (2) - means that the SW Pack was loaded successfully and it is ready to be installed. The 'readOnly' bit of the fileSystemEntry.fileSystemValidIndication object shall be reset. previousActive (3)- This is a transitional status that remains during the installation process. After the completion of the installation the Agent changes it to 'ready'. In case of SW Pack installation interruption by the 'undoInstall' command the agent shall change the 'previousActive' state to 'active'. Note: Only one previousActive SW Pack may exist at any given time.