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Software methods to jailbreak the PS3 is possible.......... by exploiting the running GameOS without using any hardware..............., except maybe a generic USB harddrive to deliver the code to the PS3. Because knowing the encrypting and signing keys used by Sony could result in creation of PS3 approved homebrew application, many software jailbreak methods can involve simply creating an application or custom firmware (signed or encrypted) that patches out security features, so it is possible to install and run any desired unsigned or signed code from the GameOS itself.
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