ethomaz on 25 October 2012
| Barozi said: From what I've gathered you only need a PS3 that was manufactured when 3.55 has not been released yet. Then you can still downgrade to 3.55 even if you had 4.X on it. So still the vast majority of all sold PS3s are able to do this. |
You can't downgrade without a mod chip (progskeet ATM).
After PS3 Slim CECH-30* it's impossible to downgrade or rack (yet)... all PS3 shipped after July, 2011.
