From PocketWizard:
Intro: Beta Firmware Version 3.818 addresses compatibility with newer Nikon gear introduced since the launch of ControlTL Firmware version 3.800, and includes some minor improvements.
New Key Feature:
The following Nikon gear is now supported in this beta firmware release:
These cameras will work in the ControlTL system with normal operational considerations. Read more about the general Nikon Operational Considerations on the PocketWizard Wiki.
SB-5000 Operational Consideration: The Nikon SB-5000 should only be used as a remote Speedlight on a FlexTT5 (set to TTL, not REMOTE per normal ControlTL operation). We do not recommend using the SB-5000 as a MASTER Speedlight on your camera’s ControlTL radio at this time. It might work as a MASTER on select cameras, but not others. If you use it as MASTER in your setup and it only emits a tiny burst of light at trigger time, it is not compatible. We hope to address this consideration in a future firmware release.
D7200/D5500 Operational Consideration: Rear curtain sync mode with these cameras only works with remote flash, not with on camera flash.
Other Improvements:
* Please make sure to update your camera to the latest firmware.
To install PocketWizard ControlTL MiniTT1 / FlexTT5 Nikon Beta Firmware v.3.818, you must enable Beta Firmware access.
Enabling Beta Firmware
How to enable the beta firmware options.
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