This method involves soldering a microcontroller (like a Teensy 2.0++) directly to the PS4’s Syscon chip (the chip that manages power and fuses).
The Process:
Risks:
Why you see "1302 to 900": In this process, users often encounter error 1302 (USB read fail) and error 900 (fuse check fail) before they flash. Once the Syscon is modded, the console stops rejecting the 9.00 PUP, effectively "converting" the 900 error into a successful downgrade.
This error occurs when your PS4’s Blu-ray drive daughterboard (or the SYSCON chip) has a firmware mismatch with the main system software. You see a message saying: “Cannot start the PS4. Connect a USB storage device containing the update file for reinstallation.” ps4 downgrade 1302 to 900
However, when you plug in a USB with the official firmware, it fails immediately with code SU-42118-6 (1302). This happens because:
This involves physically modifying the console's motherboard to force it to accept an older firmware file. This is not a software hack; it requires soldering skills.
Risk Level: Extreme. One wrong move can permanently brick your console. This is generally reserved for advanced repair technicians.
In the world of PlayStation 4 modding and jailbreaking, few phrases spark as much confusion and desperate searching as: "PS4 downgrade 1302 to 900." This method involves soldering a microcontroller (like a
If you have landed on this page, you are likely staring at a console that will not boot, a system that suddenly demands an update, or a jailbreak attempt that has gone horribly wrong. You have heard whispers on Reddit or GBAtemp that by downgrading from a specific error state (error 1302) to an older firmware (error 900), you might save your console.
Here is the hard truth you need to read before you waste any more time: You cannot downgrade a retail PS4 firmware from version 13.02 (or any version) to 9.00. What you are looking for is technically impossible on a standard, unmodified console. However, understanding why people search for this, and what errors 1302 and 900 actually mean, can save your console from becoming a paperweight.
This article will explain the firmware landscape of the PS4, dissect error codes SU-42130-2 and SU-42118-9 (often shortened to 1302 and 900), and explore the only fringe scenarios where "downgrading" is possible—primarily involving hardware mods like a Teensy or an ESP32.
The Truth: You cannot. Wait for a jailbreak for 13.02 (unlikely anytime soon) or buy a used PS4 on eBay that explicitly says "Firmware 9.00 or lower." Risks:
Do NOT:
This could indicate a failing hard drive or corrupted Syscon. Try a new hard drive first. If the errors persist, your console may require professional hardware repair (reballing or Syscon replacement). A "downgrade" will not fix hardware failure.
Users often want 9.00 because it was the last major "Golden Firmware" for homebrew.