NEVER try this on a SuperSlim or late Slim model (e.g., CECH-3xxx or CECH-4xxx). You will brick your console.
Despite its association with piracy, the Test Patcher serves many legitimate purposes:
is now the preferred method. It automatically decrypts the game while dumping it, removing the need for manual patching with test_patcher and IRD files. Are you trying to decrypt a specific game for , or are you setting up Custom Firmware (CFW) on your actual PS3? RPCS3 Game Patch Manager Guide Official PS3 Toolset (BGToolset) How To - Decrypt PS3 ISO Games For RPCS3 Emulator
Here is the obligatory .