First download the latest build here
Right click the zip and go to properties.
Check the "Unblock" option
Then click "Apply" and "OK"
Lastly, you need these 2 required installs
Direct X
C++ redist
These are required for most texture viewing as it is the main library to decompress/compress these back.
Now open Toolbox.exe.
You can now use the tool. File - Open to open new files. Files can also be dragged/dropped to the tool. The green arrow is for automatic updates.
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