Posted 10 April 2018 - 10:56 AM
WSUS Offline updater is pretty good. It's a bit clunky as a first time user but once you get used to it it works well and can save time if you do updates often enough. All the program does is provide a GUI to download the updates direct from Microsoft then apply them in the order windows update does. It requires several reboots just like downloading the updates via the built in windows update application.
Basic directions, download, extract, run the update generator in the main folder as admin, pick what you want it to get updates for and download. The under the client folder on the machine you want to update run the update installer and follow directions. You can even make ISOs of the updates if you want.
Adding the updates to the ISO is something you can do as mentioned, but that's harder to setup for the first time. As for downloading a pre updated ISO from the darker corners of the web...I would consider it for one of my PCs but wouldn't on a customers for fear of potential questionable software put in by those creating them.
i7-5930K/GA-X99-UD4/32GB G.Skill/512GB Intel 600p/512GB Crucial M550/480GB ADATA SP550/5TB/GTX 1080 Ti/Rosewill Capstone 1000-M/Rosewill Blackhawk (main rig)
i7-4930K/GA-X79-UP4/32GB G.Skill & Team Vulcan Mixed/240GB Seagate 600 SSD/4 x 1TB/GeForce 315/Rosewill Capstone 750/Corsair Carbide 200R (VM Server)
i7-6820HK/Aorus X7 v6/16GB G.Skill/512GB Samsung SM951/1TB/GTX 1070/230w AC Adapter/94.24Wh Battery (Gaming/Fun Laptop)
i7-7500U/Razer Blade Stealth/16GB/512GB Samsung SM951/45w USB-C AC Adapter/53.6Wh Battery (Work Laptop)
i7-4770K/GA-Z87X-UD5H/16GB Kingston/240GB Seagate 600 SSD/2TB/GTX 1070/Rosewill Capstone 750-M/Rosewill Blackhawk (the wife took this one)
i5-3570K/GA-Z77X-UD5H/24GB ADATA/120GB Crucial M500 SSD/2 x 8TB/3 x 5TB/4TB/2TB/Antec BP550/Bookshelf (server)
i5-8600K/ASRock Z370 Gaming-ITX/ac/16GB Team Dark/512GB Sandisk 400 SSD/GTX 1070 Ti/EVGA Supernova 650 G1/Phanteks Evolv ITX (HTPC)