Modify the Syscon chip firmware to force the console to boot from the previous firmware slot instead of the active 13.02 slot. The Catch: The "Current-Minus-One" Rule
A hardware flasher is required to read and write to the chips.
Do not attempt a downgrade unless you fully accept the high technical, legal, and bricking risks, have specialized tools/experience, and are prepared to lose the console or online access. For backwards compatibility or running legacy software, consider safer alternatives (buying a compatible older console or using emulation on a PC). ps4 downgrade 13.02 to 9.00
If you updated directly from 9.00 to 13.02, a revert is theoretically possible via hardware modding.
: There is no "USB trick" or simple menu setting to downgrade. To even attempt a revert, you would need professional-grade soldering equipment, a hardware flasher like a Teensy 4.1 , and extensive technical knowledge to dump and patch the console's NOR and Syscon chips. Modify the Syscon chip firmware to force the
By using advanced hardware tools (like a Teensy or Raspberry Pi Pico) and performing micro-soldering on the console's Syscon and NOR chips, technicians can trick the console into switching back to the previous firmware slot.
The easiest and safest way to enjoy a jailbroken PS4 is to purchase a used console that is already running firmware 9.00 or lower from secondhand marketplaces. To even attempt a revert, you would need
from firmware 13.02 to 9.00 via software is completely impossible. Sony’s security architecture physically prevents rolling back the operating system using a simple USB flash drive or standard system settings. Any website, software package, or online tool claiming to offer a "one-click software downgrade" or a "13.02 jailbreak installer" is a malicious scam targeting unsuspecting users.
If you absolutely want a modded PS4 today, the most time-efficient and cost-effective method is to buy a used console. Look on local marketplaces (eBay, Facebook Marketplace) for consoles advertised as "low firmware," "un-updated," or specifically "firmware 9.00 or lower."
Performing a physical revert is an intricate task requiring deep hardware modification experience. It cannot be accomplished via a standard interface or dashboard settings. The complex procedure typically requires: