I use HO-MOBILE provider (Vodafone). It was working before the upgrade, I saw there was an upgrade available and after that stopped working. Current ISP version: 20082701 I also created a new profile...

Downgrade failed, Error code: 71211.

Same thing happened to me, after the upgrade, no Signal Strength and of course no Internet. 2 2018-10-01 00:02:52 4G Information USER: Registration denied by the visible network! 3 2018-10-01...