There is no need for a "downgrade." The solution is to repair the underlying hardware issue and then perform the required system update. Follow these steps in order:
The "PS4 Downgrade 1302 UPD" is not a magic hack; it is a misunderstood piece of history. The file exists—it is the day-one update that shipped with launch consoles in late 2013. But for modern users hoping to unlock their systems, it is a dead end.
For a 13.02 downgrade, this process requires extensive technical knowledge. You must have: A hardware flasher (like a Teensy++). Expert soldering skills.
When you perform an update via an official file, the console's CoreOS performs strict cryptographic validation checks.
Safer alternatives
Downgrading a PlayStation 4 Go to product viewer dialog for this item.
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