From PocketWizard:
March 18, 2013 – PocketWizard, the industry leader in wireless control and synchronization of cameras, flash and light meters, announces today the release of Plus III Firmware 1.200. Firmware 1.200 includes some operational enhancements over the originial firmware version 1.100.
Click here for complete Plus III Firmware 1.200 Release Notes.
*This Plus III firmware requires PocketWizard Utility version 1.54 or later, click here to download PocketWizard Utility 1.54 or 1.55
When you have installed the latest Utility, connect your Plus III to your computer with a standard Mini-B USB cable. Click “Check For Updates” to begin. Be sure to update all of your radios to the latest version. Your radios will only operate as expected when all radios are using the latest firmware.
B&H carries the PocketWizard Plus III Transceiver.