News from Freeplay!
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Sony didn’t want us going back to firmware 3.60, I guess… so I made my own installer. Using an encrypted, un-sigchecked dump of firmware 3.60, the 3.60 IPL, and a few modules from the 3.52 updater, you can now install 3.60 again on slim PSPs.
The readme is intentionally hard to understand (written for experts) because of the risks posed in flashing your entire firmware this way. There are no safety checks in place or anything.
On the plus side, it will only run from a Pandora memory stick setup, so if you do manage to mess things up and brick your PSP, you can always get things back to normal.
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