Hi Martynas, thank you for getting back to me. I have rebooted the router and performed a factory reset but the issue persists. It began immediately after the failed update.
The router firmware version is:
RUTX_R_00.07.12
The internal modem firmware version is:
EG12EAPAR01A09M4G_01.001.01.001
Kernel version:
5.10.229
Many thanks,
Scott