If your PS3 returns 3.56 or below, it’s safe you may proceed.You’ll get a prompt asking you whether you want to initialise the version checker, press OK (usually with the button X).Navigate to Settings->System Update->Update via Storage Media.Connect your pendrive to the right-most (closest to the BD drive) port.Disconnect the pendrive from your computer Copy that to the PS3/UPDATE folder on your pendrive. From the RAR file of minchkver, you’ll get a file called PS3UPDAT.PUP.Inside the newly created ‘PS3’ folder, create a folder called UPDATE. Grab a USB pendrive that’s formatted as FAT32 and create a folder called PS3.Download the minchkver PUP file from the link below and extract the RAR file.To check whether your console can be hacked or not (this is for 25xx consoles or if you don’t know the model number of your PS3 Slim), you can do the following: DON’T DARE TRY IT ON A CFW OR YOU’LL BRICK YOUR CONSOLE AND NO AMOUNT OF CRYING WILL BRING IT BACK UNLESS YOU HAVE AN E3 FLASHER (MAYBE). PS3XPLOIT ONLY WORKS WITH OFW (OFFICIAL FW) 4.82 SO DON’T TRY IT ON 4.81 OR LOWER.They need to have a minimum downgrade firmware of 3.56 or below which you can find out with this guide. Slim ( 2xxx ) consoles are mostly safe but some late 25xx consoles aren’t (some date code 1B have a min FW of 3.60).