Are you running 2.5.0-1 or 2.5.1-2 ? 2.5.1 has newer addons and paves the way for 2.X addons to be updated separate from OH core which will remain at 2.5.0. The update script should work to grab the latest snapshot binding.
Zigbee and Z-Wave manual install script - Tutorials & Examples - openHAB Community