Step 1: After downloading the file below you will see after extracting there is a README.TXT and the ReactPSN.PKG. The Read Me is just the 3 major functions that i believe to be necessary. The PKG is what you are really going to need.
Step 2: Take a USB flash drive and place it into your PC and copy the ReActPSN.PKG to the root of the USB Stick. Once done, Connect the USB to the PS3.
Step 3: On the PS3, go over to the GAME section and locate *Install Package Files and click X, You will see the ReActPSN V2.27, Click X to install the Package.
Step 4: Once installed, Boot the Package with one of the following Button Combinations:
[L2] = Backup RAP files
[Triangle] = Fix and Backup EBOOT.BIN
[R2] = Install RAP files from USB
Once you to that you can use these extracted PS3 files to your use and purpose.