If you are still on firmware 9.00 or lower, you can prepare for the future by backing up your "EAP Key" (Encryptions Key) using a jailbreak tool. However, if you are already on 13.02, it is too late to do this without a hardware flasher.
: Some entry points, such as the PS Vue exploit or BD-JB (Blu-ray exploit), may work for limited code execution, but they do not allow for game backups or full system control. ps4 downgrade 13.02 to 9.00
The most important thing to know is that with firmware 9.00. Sony’s system software is designed to only accept "higher" version numbers than the one currently installed. If you try to install 9.00 over 13.02 using standard methods, the console will simply block the installation. The Hardware Revert Method If you are still on firmware 9
As of early 2026, the PS4 scene has advanced beyond the need to downgrade to 9.00 for many users: How to Jailbreak the PS4 on 9.00 The most important thing to know is that with firmware 9