On your PS3 (usually requiring HEN or CFW), use the Package Manager to install the patch parts in sequential order.
Different versions exist, such as Classic V4.1 (free) and V5 (Beta) , which may require specific access through the creators. Installation Requirements
Obtain the multi-part .rar files (often hosted on sites like MediaFire) and extract them on a PC.
Format a USB drive to FAT32 and copy the extracted .pkg or PS3/SAVEDATA files.
Copy the "Save Data" folder from the USB to the Save Data Utility on the PS3.