It's important to note that if you haven't been using MSN Messenger and have no need or desire to control your IP Switch remotely via instant messenger, you do NOT need to worry about updating your firmware — the only change this firmware makes is the addition of Google Talk support. If you're just using your IP Switch in the automatic restart mode, you can simply disregard this firmware update.
You can read more about the new firmware here: New IP Switch Firmware With Google Talk Support Now Available
If you're an existing IP Switch user and you want to use Google Talk to control it, you can download the new firmware from our IP Switch Updates page (note: you must use a Windows computer — or Fusion/Parallels — to update your firmware; the firmware update cannot be done in Mac OSX). For new users, all of the IP Switches sold by 3Gstore now have the new firmware pre-installed, so you can simply follow the instructions to set up Google Talk when you receive it!