The present invention relates to a method and apparatus for providing a user of an electronic device with an Automatic Upgrade Functionality, the ability to automatically upgrade software installations with a configurable amount of user interaction and interruption. The conductive paste for internal electrodes including: a nickel powder; a nickel oxide powder having a content of 5. The conductors are configured to electrically connect to one or more electric components of the portable electronic device and the electrical conduit is configured to electrically connect to one or more diagnostic devices. Digital media appliance communicates wirelessly with other media appliances, computers, security systems, video storage, email, chat, cellular services or PDAs to provide seamless integration of captured video stream. The method may also include receiving user-provided adjustments to the predefined parameters that are particular to the detected regions of interest and identifying the lymph node candidates based on the adjusted parameters. Rail sections for use in a rail switching system and a method of assembling a rail switch are also provided.