Windows 10 rollback stuck

Apparently Avast (AVG) is the problem or at least one of them. This statement was issued this morning along with the steps to fix the problem at the link below:

https://mspoweruser.com/avast-issues-a-fix-for-the-windows-10-april-2018-update-problem/

In cooperation with Microsoft we have had an element of the latest Windows 10 1803 update that is incompatible with the Avast Behavior Shield, causing the aforementioned update to fail in some instances (related to a timing issue, Internet connectivity issue, etc). Luckily, we have found a way to prevent the problem and are now automatically pushing a VPS update to all customers which makes sure that the problem doesn’t happen.

Vik, Global Moderator, Avast

My PC (Dell Inspiron desktop) was using AVG and the internet was down at the time the Windows 10 update was being installed.  This may be the combination of circumstances that causes the problem and would explain why most AVG users did not experience the issue. Only those with AVG AND no internet connectivity at the time.

Prior to this fix being published by AVG, I spoke with Microsoft support yesterday who gave me a case# and said they were working hard to resolve the issue which came to their attention 2 days earlier although the update has been out for 2 weeks with no problem. They said they were blindsided by the sudden reports over the past few days.

He said MS would be releasing a fix soon that would not require a clean reinstall of the operating system. He said he or his managet would contact me and during the phone call would be able to connect to my system from cmd prompt instructions they would provide me. He urged me not to attempt other recovery steps in the meantime as they are seeing some customers who have tried other fixes in the meantime (cmd prompt /boot commands, reinstalls, etc.) make things much worse and then requiring a clean reinstall with loss of data.  He said while Microsoft does have a fix for most of the identified issues but since it does not have a fix that UNIVERSALLY covers the issues on all computers it is not releasing it yet. He asked me to sight tight and wait for the official fix if possible. He said Microsoft would have a fix today or tomorrow (that was yesterday) and they would be working on it even if its a holiday weekend :)

In the meantime I saw AVG release this fix in conjunction with Microsoft so I am assuming this is an "official" fix which exactly fits my setting so I am attempting it now. So far I have followed the instructions to the tee and they have worked perfectly. I am at the point where the operating system is installing and about 30% complete and slowly progressing. I will advise on the outcome.

Has there been no updates from Microsoft regarding this issue? I too am stuck in the loop of selecting my keyboard layout.

I ended up booting from a usb flash drive. If you press ESC while the computer is booting (if unsure when, just spam the key or hold it down) you should be able to choose what drive to boot from so if you have a clean version of windows on either a disc or a flash drive you can use that. 

If you don't have either you can download it here:

https://www.microsoft.com/en-gb/software-download/windows10

(make sure you have a disc or flash drive at the ready)

I had the exact same issue as mentioned so I've tried the above but now my computer is in an endless loop of reboots, also rebooting with F8 doesn't work anymore. 

Any ideas?