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:
Modification typically requires direct interaction with the console's internal flash memory chips. ps4 downgrade 1302 upd
Do not allow your PS4 to update beyond 13.02 if a new version releases. There is no need for a "downgrade
Downgrading PlayStation 4 Go to product viewer dialog for this item. ps4 downgrade 1302 upd
When you updated your console to firmware 13.02, the following sequence occurred:
Stay Put: If you want to jailbreak your console in the future, do not update to any version higher than 13.02. History shows that the longer a firmware exists, the more likely a vulnerability will be found.