Unreal Engine 3 - UPK' contains unrecognizable data, check that it is of the expected type.

[HexPa5]

Hello, I finally decrypt one of game files with naruto_uns4.bms (853Kb)

When I wanted to open this content in the engine, data was unrecognizable.


In the game library C:\SteamLibrary\steamapps\common\Batman Arkham City GOTY\Binaries\Win32 I found something interesting, called BatmanAC.exe.cat as Security Catalogue type. There was many information and I don't know which should help me, so I check Security Catalogue > Digital Signature Details > Certificate > Details > Key usage named 'Digital Signature (80)'

I really decrypted one of these Upk files and still doesn't match, because Upk has unrecognizable data.

Any idea?