Z-Wave firmware on C7. ERROR: This firmware target is not upgradable

[jtp10181]

You need to downgrade the gateway to 7.15 in order for the firmware update to work. Then update the gateway back to 7.18 when done.

Here are full instructions from staff:

Updating Z-Wave radio on C-7 hubs after version 2.3.8.122

We have identified a limitation affecting only the C-7 models that have been automatically upgraded to the Z/IP Gateway SDK 7.18.03, which was released with platform version 2.3.8.117. If you have a C-7 hub and already updated to 2.3.8, prior to version 2.3.8.122, and you have a button on the Z-Wave Details page to "Update firmware," you will not be able to update the radio firmware to version 7.18.1.0. A work around for this limitation is to downgrade the Z/IP Gateway, then update the radio f…

Also abridged version is above in this thread:

Z-Wave firmware on C7. ERROR: This firmware target is not upgradable

According to the versions you shared above, your hub is running 718. If you didn't downgrade to 715, yet, then follow these steps: Go to: yourHubIP*/hub/advanced/installZipgateway715 Reboot the hub from Settings Go to Z-Wave Details page, then select Update Firmware to install "Z-Wave and Z-Wave Long Range 700/800 SDK 7.18.1.0" Go to: yourHubIP*/hub/advanced/installZipgateway718 Reboot the hub from Settings If you already downgraded to 715 and your hub still reports 718, you may need to rebo…