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How to Downgrade a PlayStation 3 550 With the Ti84 Plus

The PlayStation 3 is a video gaming console that has different versions of firmware that come out from time to time. When you upgrade your PS3 firmware, you run the risk of bricking your system, making it unplayable, if you have certain mods, jailbreaks or other hacks on it. The TI-84 Plus is a calculator from Texas Instruments that allows you use a Flash program to downgrade the PS3 to a lower version of firmware that can run jail broken software without bricking the console.

Things You'll Need

USB cable
Payload file
USB drive

Instructions

- 1
  Download a payload file to your computer. Download Ti-Connect and the PS3 firmware version 3.42/3.50 to your PC. Click on the Ti-Connect program and select "Run" to install it.
- 2
  Plug your USB drive into the computer. Connect the TI-84 Plus to your computer with the USB cable and open Ti-Connect. Open the firmware folder called "Downgrading Files" and drag the file "PS3JB.8xk" to the Ti-Connect program.
- 3
  Drag the "Modified 3.41 PUP," Payload file and "Lv2diag.self FILE 1" from your computer to your Flash drive. Remove the Flash drive from the computer. Open "Jail breaking Files" and drag the "PS3JB.8xk" icon to the Ti-Connect. Unplug the calculator from the computer.
- 4
  Plug the calculator into the PS3. Select "Apps" on the calculator. Choose "PS3JB" and click "Options." Select ""Emulate Jig." Select "Yes."
- 5
  Turn on the PS3 and press the "Eject" button. Unplug the calculator and turn on the PS3. Plug the USB drive into the PS3 and press the power button and the "Eject" button to complete the downgrade.

PlayStation 3