Update #2: jeffma has now released PS3 Game Update Finder v1.1 which allows you to to download PS3 game update packages via PC.
Update: PS3 PKG Fast Unpacker 2.0 is now available for those interested with a brief changelog posted HERE followed by PS3 PKG Fast Unpacker 3.1 with a changelog HERE, PS3 PKG Fast Unpacker 3.2 which can check PKG files information and PS3 GUI Toolbox v1.0 which is detailed HERE followed by PS3 GUI Toolbox v1.1 detailed HERE.
Today jeffma posted a PS3 PKG Fast Unpacker homebrew application on A9VG.com (linked above) for those seeking to unpack PlayStation 3 PKG files really fast.
Download: PS3 PKG Fast Unpacker Homebrew Application
It is similar to the recently released PS3 PKGView and UnPKG file extractors / unpackers, and to use it simply click the big button and select your PKG file.
To quote, roughly translated: "There is a similar procedure before the call PkgView.exe But the program can not bulk unpacked, unpack and often wrong.
The device can be quickly unpacked all the files once unpacked. Self-made program can only unpack and debug pkg. Can not unpack the pkg downloaded from the official PSN."
More PlayStation 3 News...