The Reality of PS4 Downgrading: Can You Go From 13.02 to 9.00?
Given the extreme difficulty of the hardware method, the most practical advice for the overwhelming majority of users is to and use the money to buy a console that is already on firmware 9.00 or lower . Many online marketplaces and local retro game stores will list a console's firmware version, allowing you to find one ready for homebrew.
. Sony's internal console security utilizes hardware fuses, a non-volatile flash memory chip called the NOR chip , and a system controller chip called the Syscon to explicitly block older firmware installations from running.
There is exactly one legitimate, highly technical way to downgrade a PS4 console, commonly referred to by the modding community as the .
This requires expert-level soldering skills, as you must solder numerous wires directly to the motherboard's microscopic chips. Common Misconceptions
If your goal for downgrading is to use homebrew or specific exploits available on version 9.00, your only reliable option is to find and purchase a used PS4 console that is already running firmware version 9.00 or lower. specific exploits
available on version 9.00 or how to check the firmware on a used console? Downgrade PS4 To 9.00: Is It Possible? - Ftp