nayelyz
(SmartThings Developer Support)
February 25, 2026, 9:23pm
9
Hi, @Paul_Oliver
I checked your hub and this case sounds similar to this one:
Hi, @gvpopov
So, the engineering team mentioned that we need your help to follow the instructions here to disable the NTP port on the source side: Troubleshooting SmartThings Hub 2018 and Aeotec Hub
This should help to update your hub, please let us know if you have any issues. Just as a heads-up. If you don’t see any option to do this on your router, you might have to connect the hub to another one from a friend/family member.
This hub had version 40, blue LED and Zigbee/Z-Wave radios displayed as “not supported”, so, after checking the hub logs, the engineering team suggested following the NTP port blocking workaround to help this hub update, and it worked.
Can you please follow the steps as well? I added the post on troubleshooting here as well:
Use this guide for troubleshooting help with onboarding your Hub. We also include Hub replacement information if necessary.
Overview
When encountering the 33-504 error while claiming a SmartThings Hub 2018 (IM6001-V3P) or an Aeotec SmartThings Hub, the following root causes may apply:
Your hub cannot access the internet over Ethernet or Wi-Fi connections
Hubs manufactured before April 2024 may not have received firmware updates after production. If a Hub has not been claimed by March 2, 2025, it may not have been updated before purchase or activation.
The following steps could be attempted to claim your hub successfully.
Verify Internet Connectivity:
Please verify the following:
Your hub can connect to the internet
If claiming over Ethernet, the LAN is internet-connected
If claimin…