The 1809 update was and still is on the Microsoft website.
All anyone needed to do was to download Media Creator 1809.
Upon execution you could :
1 - UPDATE THIS PC
2 - CREATE MEDIA TO UPDATE ANY WINDOWS 10 COMPUTER EITHER ON DVD OR USB
3 - CREATE ISO FOR LATER USE
I chose #3, saving the ISO on my D: drive. Copied the ISO to a USB drive. Performed my own backup and SYSTEM RESTORE POINT. Mounted the ISO and ran the update.
My computer updated without any problems, what so ever, which is a FIRST for WINDOWS 10 PRO X64 !!!
It only took me 1 hour to update which I feel was a little long in the tooth....
Pete...