PS3 Tutorials

PS3 Firmware 3.55 Downgrade Released

BACKED BY MATHIEULH’S ADVICE, SOLIDPSYCHO DOES A SOLID FOR ALL THOSE WANTING TO RETURN TO firmware 3.41; I’M SURE YOU HAVE YOUR REASONS… YOU’LL NEED TO RE-EQUIP YOUR JAILBREAK/DOWNGRADE DEVICE FOR THIS ONE.

Downgrade at your own risk. You may downgrade your PS3 to a brick if you’re not careful. Several reports indicate success (mostly Fat models); others have reported bricks (more Slim models; 3.50/3.55 out-the-box). My boy, Quake, he successfully downgraded his Slim (not 3.50 out-the-box). You’re also at risk of losing Blu-ray movie playback. Backup your PS3 saves and other HDD data. Again, proceed at your own risk.
Here we’re downgrading from 3.55 to 3.41(3.56):
  1. Download this (modified PUP + Lv2diag files)
  2. Get your Factory/Service Mode (downgrade) device ready
  3. Get your USB storage device ready (FAT32 formatted)
  4. Power down your PS3 console (toggle power switch on rear or unplug from wall)
  5. Copy FILE1/Lv2diag.self (from Lv2diag_355.zip) to the root of your USB storagedevice
  6. Copy PS3UPDAT.PUP (from Downgrade_355.rar) to the root of your USB storage device
  7. Insert your downgrade device into the PS3 USB port nearest the Blu-ray drive
  8. Reconnect the main PS3 power source and turn on your PS3
  9. Your PS3 should boot into Factory/Service Mode
  10. If you decide to chicken out, get out of Factory/Service Mode by using FILE2/Lv2diag.self — Copy that to your USB storage device, overwriting the other, and power on your PS3 with it connected. Otherwise proceed to the next step
  11. Power down the PS3 using the controller
  12. Remove your downgrade device and insert your USB storage device
  13. Power on your PS3 and the downgrade should start
  14. Your PS3 will automatically turn off upon success
  15. Restart your PS3 and you should be back in Factory/Service Mode
You’re now at “3.41(3.56).” From this point it is recommended you downgrade to 3.15 using the method here. Read and follow along carefully. Then upgrade back to the real, official 3.41 using Sony’s OFW update found here. Now jailbreak it.
Here you can find versions of PSGrade for various devices. You aren’t limited to the E3 Card Reader (used in the later tutorial).
- source: psx-scene

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