Can PS4 be downgraded?

Can PS4 be downgraded? No, you cannot. The rescue code in the PS4’s firmware checks the current version in its flash ROM, which is updated every time the base OS is, to prevent users from downgrading the OS to an older version.

No, you cannot. The rescue code in the PS4’s firmware checks the current version in its flash ROM, which is updated every time the base OS is, to prevent users from downgrading the OS to an older version.
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