Following up on his previous release, today PlayStation 3 homebrew developer nathanr3269 (aka Nathan_r32_69) has made available PUAD GUI v1.3 which is a PS3 PUP Unpacker & Decrypter for Windows.
To quote:
After some weeks of hard work i finally finished the new PUAD GUI, aka PUP Unpacker and Decrypter. Works without Cygwin, directly...
This is my GUI for the signing tools from geohot. I might expand it to include other tools later. Tested working with the couple apps I made so hopefully it works just as good for anyone else who wants to try it.
NOTE: This requires Microsoft .NET Framework 4.NET...
To quote, roughly translated: Tools to fix your game 3.56 to 4.30 for CFW v1.71 by Attila