Can you rollback the firmware to an earlier version on a Super Slim 500GB PS3?

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Why does my Sony PlayStation 3 Super Slim (500GB) only display the option to install/download version 4.66 or later - there does not appear to any option to download an earlier firmware than this.
I have already tried restarting it but I'm only given the option to install/download version 4.66 or later. What's the problem? Why are earlier versions not available?
Best Answer
Sony does not allow downgrading firmware versions, you can only install the newest version because that is all they offer.
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Can I downgrade ps3 Super Slim?
Yes, but only under certain conditions. Basically, your PS3 needs to have had a factory firmware of 3.56 or lower. In other words, it needs to be \u201cDowngradable\u201d to firmware 3.56/3.55.Can I jailbreak ps3 superslim?
The reason that the super slim cannot be jailbroken is because NO superslim model came with 3.55 stock firmware and since the ONLY way to add custom firmware to your ps3 is for it to have the ability to either downgrade from 3.56 OFW or already have 3.55 firmware installed on it.how to downgrade your ps3 to version 3.55 ( no jailbreak)
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