Windows 8.1 Update 1 (Build 9600.16596) Untouched ISO (x64) | 3.79 GB
This is the leaked Windows 8.1 Update 1 ISO file that is untouched. I've posted this for only testing purposes. Moreover, This pre-release build is unfinished, meaning it does not represent the final product. Things could change between now and release. I recommend using this Pre-Release it in VM, Not on your main system, because it may have some bugs.