Everybody, can you unzip a PAK script? thank you
You don't need to extract these PAK files. Just put the AES key to umodel when it ask for it.
I mean yes, you have to do that every time when you try to load Blade 2 on Umodel but since it work, it's not worth the trouble to write a script (QuickBMS for example) to extract it again.
Create Shortcut of uModel, rename is to Blade 2, right click and properties and add the following in the target line,
-PATH="Path to game location\Paks" -Game=ue4.17 -aes=9E01E0CA0E59FA69C115B39CEE9873D8
Double click on Blade 2 shortcut will load the files and aes key in automatically.