The first thing we need to accomplish is to obtain a game save that is of your own (i.e. one that is currently tied to your PS3 and user account).
You can use any game save for this. In this tutorial, I will be using my own Dynasty Warriors 8 game save from my PS3 (to make things less complex).
Copy the game save of your choice from your PS3 to your USB stick. Plug the USB stick into your PC. You can simply leave the game save in the USB stick as copying it to the PC isn't necessary.
STEP 2: Download/obtain the game save you wish to resign
Now, we will need the game save you wish to resign.
For this tutorial, I'm going to be using the Dynasty Warriors 8 100% game save I posted on this blog.
Place the game save folder somewhere on your PC that you can remember.
STEP 3: Download and configure Bruteforce Save Data
Bruteforce Save Data is a powerful game save data swiss army knife for PS3. It allows one to decyrpt and encrypt game save files, add cheats, transfer region, transfer saves to another owner and more.
Download Bruteforce Save Data here.
Once it's finished downloading, extract the RAR file and run the installer. Do not run the program yet.
Create a new folder on your desktop or anywhere else you like and name it "SAVEDATA". This folder will be the folder where you store all your game saves for usage with Bruteforce Save Data. Make sure that wherever directory you store it in is NOT write protected!
Drag/copy the game save folder you wish to resign (ex. NPUB31234-SAVEDATA) to this "SAVEDATA" folder.
Now it's time to run Bruteforce Save Data.
Windows Vista, 7 and 8: Run Bruteforce Save Data as an administrator by right clicking the program icon and then selecting "Run as administrator". This is very crucial! If you don't wish to do this every time you re-open the program, go to the BruteforceSaveData.exe in Windows Explorer, right click and select "Properties", then go to "Compatibility" tab and check "Run this program as administrator". Alternately, you can simply disable Windows User Account Control (UAC).