If you attempt to downgrade your PS4 by simply placing an older firmware file (9.00) on a USB drive and installing it via Safe Mode, the process will fail. This is not a limitation of the file format or a mistake in the method; it is by design. The PS4's firmware is not stored solely on the internal hard drive, which can be replaced.
You must strip the PS4 down entirely to access the motherboard. Locate the Main Nor Flash chip and the Syscon chip.
You must understand how to flash NOR/Syscon and have the ability to patch them to match 9.00. Step-by-Step Guide to Downgrading 13.02 to 9.00 Step 1: Prepare the Hardware
If you were meticulous enough to take a complete hardware dump of your console's Syscon and NOR flash memory back when it was natively running firmware 9.00, you are in luck. ps4 downgrade 1302 to 900
You cannot downgrade a PlayStation 4 by simply plugging in a USB drive with firmware 9.00 and clicking "install." Sony explicitly blocks older firmware installations via software to prevent exploitation.
Any website, video, or download link claiming to offer a "PS4 11.50 to 9.00 Downgrade Tool.exe" is a scam designed to steal your data or infect your PC with malware. Alternative Options: What Should You Do Instead?
Directly downgrading a Go to product viewer dialog for this item. If you attempt to downgrade your PS4 by
[ Motherboard Flash Memory ] ├── Slot A: Firmware 13.02 (Active) └── Slot B: Previous Firmware (e.g., 11.00 or 9.00)
Because these dumps contain the cryptographic keys unique to your specific motherboard, you can solder your flasher to the board, overwrite the 13.02 data entirely, and flash your clean 9.00 backup files. The console will boot up precisely how it was on the day you took the backup.
Attempting hardware-level firmware manipulation carries a high risk of permanently "bricking" (breaking) your console. You must strip the PS4 down entirely to
There is active development in the PS4 exploit scene. A userland exploit, , has been confirmed to work from firmware 5.05 up to 13.02 . While this does not yet grant kernel access for a full jailbreak, it demonstrates that security researchers are actively finding entry points on the latest firmware. The disclosure of CVE-2025-64390, a privilege escalation vulnerability affecting firmware 13.00-13.02, is also a promising sign, as it indicates that kernel-level access may be possible in the future. For most users, waiting for a more accessible software-based jailbreak is the safest and most practical course of action.
Whenever the PS4 updates, it updates both the NOR and the Syscon. Crucially, the PS4 keeps a backup of the previous firmware version slot. If your console went directly from 9.00 to 13.02 during its last update, the 9.00 data might still exist in the secondary slot. If your console went from 11.00 to 13.02, you can only revert to 11.00, not 9.00. Hardware Requirements
, as it is often safer and easier than attempting a hardware revert. Do you have the soldering equipment software tools
If you updated from 12.50 to 13.02, you can only go back to 12.50.
Completely strip down the PS4 to access the motherboard.