This is typically only done on "test kits" (debug units) or specific launch-day motherboards that lack the later security fuses. For a standard retail PS4 bought in 2018 or later, attempting this will likely result in a "bricked" console that refuses to boot.
Modification typically requires direct interaction with the console's internal flash memory chips.
You will typically encounter this error in one of three situations: ps4 downgrade 1302 upd
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Holds the active, currently running firmware (e.g., version 13.02). This is typically only done on "test kits"
: You must be comfortable with fine-point soldering on the motherboard to "glitch" the Syscon (system controller) and read/write to the NOR flash. General Downgrade Process (Hardware Revert)
However, the question arises:
: Specialized tools like Syscon Flasher are required to modify the dumped data and "revert" the active slot. Step-by-Step Overview