Originally Posted by daveyp187
are they keys not for the newest firmware availible? So what's the problem ?
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No, not exactly. See, when firmware 3.55 was originally cracked, and the private keys were discovered, we had the keys for almost everything in that firmware except LV0. Because of this, Sony moved the keys used to decrypt the other elements of the firmware into LV0, and thats the reason no one has been able to make a newer custom firmware.
Now that we have the LV0 keys (including the private signing key which we can get because LV0 is signed using keys that were flawed, similar to the rest of the keys pre-3.60), we can decrypt LV0 and extract the rest of the keys used to encrypt the 3.60+ firmware files. But what we can't do is figure out Sony's new private keys, because they fixed the security flaw that allowed us to get those.
Once you install OFW 3.60+, it uses the new uncrackable keys to check the validity of any firmware you try to install, so it is not possible to go directly from OFW 3.60+ to CFW. But with a flasher you can, because it bypasses the check.