Unplug the power for 30 seconds and plug it back in. This often triggers a "handshake" with the Vodafone servers that can prompt a pending update.
Updating the firmware of your THG3000 router is a straightforward process, but it requires careful attention to avoid any issues: thg3000 router firmware
unless verified.
in conjunction with third-party mesh systems like TP-Link Deco Third-Party Compatibility Unplug the power for 30 seconds and plug it back in