Router upgraded itself today and won't work with Vodafone 5G. Tried to roll back to version 1.1.7 and it failed at 34% using the https tool connected to 192.168.0.1 and now it just reboots on a cycle...

Upgraded yesterday and Vodafone UK connects but no access to the web. Nothing on 5g or 4G downgraded to 1.1.7 this morning - all OK again. Anyone noted similar?