not my place to say but wrong section and no there is not unless you can flash your system down to 3.55 ofw and go from there but you must have the correct PS3 as in you can not jailbreak a super slim. Other then that no you can't jailbreak your ps3 on 4.76 OFW
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If you have fat/slim and not super slim
I believe you can jailbreak it
Just pay to someone to install e3 flasher on your ps3, that way it will be downgraded to 3.55.
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