This works for GShade 4.1.1 (latest before removal) and 4.0.4 (the closest older version I had on-hand)
- Download this gist as a zip (top right)
- Extract the zip to a convenient folder
- Get byte-pattern-patcher here and place it in the same folder
- Right-click patch-gshade.bat and run as administrator
- Done! Feel free to delete these files.
This just uses a basic patch to skip the internet checks
Probably not, but the latest official gshade claims to have the check removed