Do you put the Flash Update in its own folder, extract it and point W10UI to the folder the flash update is in to integrate it?
All updates need to be in the same folder (when not next to the script), the script will extract the cab from the msu by itself.
Been using 1803 but I've read that there are advantages to using 1607 so I might give it a shot. Do I need to disable Windows Updates and just integrate new updates offline with W10UI?
IMHO, using W10UI is much more reliable than using WU... Many of the W10 CU's in the past have had ISSUES and failed to install using WU...
Both methods rely on properly working kb's and there was only one bad one for 10240.and one for 15063 iirc.
In the past, I read in the "Ask Woody" forum / links there were MANY w10 CU's that had INSTALLATION issues for many users with many editions... True, these were BAD KB's otherwise they would have installed as intended... For some users, W10UI worked when WU didn't... Just say'n... I experienced some CU installation issues with LTSB 2016 using WU in the past, and each time I used W10UI afterward, those CU's installed without issue... I currently acquire CU's and other W10 updates from MDL Links / M$ catalog.updates / WHDownloader and use W10UI to install them...
I don't know... Maybe the CU installation issues in the past were in conjunction with the WU Downloading side of the coin being corrupted or ???
Believe me, i am one of @abbodi1406 biggest fans, but the script does no magical stuff (except that it is able to do a full resetbase compared to a standard command which only will perform a /startcomponentcleanup, assuming that that is still the case). What i meant to say is: WHD/Update.Catalog are only tools/sources for downloading the updates, the script uses DISM to integrate/install them. WU should do it all too. Just like manually running the standalone .msu's also do. Many people reporting errors on tech websites are also tinkering with their installs/iso's in some way, The far majority of global windows users don't. There were just one or two bad updates who were affecting all users.
On one of my systems, I have W10 1709 installed that got updated with CU (16299.547), but I am not seeing KB4345420 (16299.550) when searching for updates either by WU/ WUMT. All I've been seeing are AV defs that are automatically installed. Is Microsoft holding back on this one or is it just me? Will stopping the update service and renaming SoftwareDistribution fix this?