Title: Exploring the Feasibility of Downgrading PS4 from 13.02 to 9.00: A Comprehensive Analysis
Abstract: The PlayStation 4 (PS4) has been a phenomenal success since its release, with a vast library of games and a large user base. However, with the evolution of the console and the release of newer firmware versions, some users have expressed interest in downgrading their PS4 from the latest firmware version (13.02) to an earlier version (9.00). This paper explores the feasibility of downgrading the PS4 from version 13.02 to 9.00, analyzing the technical challenges, potential risks, and benefits associated with this process.
Introduction: The PS4, like any other modern gaming console, receives periodic firmware updates that enhance its functionality, security, and performance. These updates often include new features, improved user interfaces, and patches for known vulnerabilities. However, some users may prefer to maintain an earlier version of the firmware for various reasons, such as compatibility with specific homebrew applications or simply to avoid changes to the user interface.
Downgrading a console's firmware, however, is a complex process that poses significant technical challenges. It requires a deep understanding of the console's architecture, firmware design, and the specific vulnerabilities that can be exploited to achieve this goal.
Background and Related Work: Previous research has shown that downgrading a PS4 from a newer firmware version to an older one is theoretically possible but practically challenging. Several attempts have been made to downgrade the PS4 from version 11.00 to 9.00, but these efforts have been met with limited success.
One notable attempt involved exploiting a vulnerability in the PS4's bootrom, which allowed the execution of unsigned code. However, this approach was limited to firmware versions prior to 11.00, and its applicability to version 13.02 remains uncertain.
Technical Challenges: Downgrading the PS4 from version 13.02 to 9.00 poses several technical challenges:
Methodology: To explore the feasibility of downgrading the PS4 from version 13.02 to 9.00, we employed a combination of reverse engineering, vulnerability analysis, and experimental testing. Our approach involved:
Results and Discussion: Our results indicate that downgrading the PS4 from version 13.02 to 9.00 is theoretically possible but practically challenging. We identified several vulnerabilities and compatibility issues that must be addressed to achieve a successful downgrade.
However, our experiments also revealed significant risks associated with downgrading the PS4, including:
Conclusion: In conclusion, while downgrading the PS4 from version 13.02 to 9.00 is theoretically possible, it poses significant technical challenges and risks. Our analysis highlights the importance of thorough vulnerability analysis and experimental testing to ensure a successful downgrade.
However, we must emphasize that downgrading a PS4 from version 13.02 to 9.00 is not recommended for casual users, as it may result in unintended consequences, including bricking or data loss. Further research and development are necessary to create a stable and reliable downgrade process.
Future Work: Future research should focus on:
not possible to downgrade a from firmware 13.02 to 9.00 through a simple software update or factory reset
. Sony’s security prevents installing older firmware over a newer one to stop jailbreaking.
However, there is a complex, hardware-based method known as a Firmware Revert , but it has significant limitations: The "Firmware Revert" Method
This is the only known way to roll back firmware, and it involves physical modification of the console's motherboard. ConsoleMods Wiki How it Works : The PS4 stores the current firmware and the immediately preceding
firmware in two separate slots on the Syscon chip. A "revert" swaps these slots. : You can only go back to the version you were on directly before updating to 13.02.
If you updated from 12.50 to 13.02, you can only go back to 12.50.
To reach 9.00, your console must have been on 9.00 just before the most recent update. Requirements
Advanced soldering skills (to wire a Teensy or Raspberry Pi to the Syscon and NOR chips). A backup of your console's unique sflash/NOR data. Guides from specialized communities like the ConsoleMods Wiki Important Warnings Risk of Bricking
: Modifying the Syscon or NOR chip carries a high risk of permanently breaking your console. Factory Reset : Performing a factory reset
lower your firmware version; it only wipes your user data while keeping the current 13.02 system software. Online Access
: If you successfully downgrade to 9.00 (which is a popular version for jailbreaking), you will lose all access to PlayStation Network (PSN) and online gaming.
If your goal is to use a console on 9.00 for homebrew, the most reliable (and safest) path is often to buy a used PS4 that is already confirmed to be on firmware 9.00 or lower from sites like Was your primary goal for downgrading to enable jailbreaking/homebrew or to fix a system error
PS4 Downgrade: Is Reverting from 13.02 to 9.00 Possible? The short answer is no, you cannot downgrade a PlayStation 4 from firmware 13.02 to 9.00 using software alone. While you may see videos or websites claiming a "USB update" can roll back your system, these are almost universally scams or clickbait.
Sony's security architecture is designed to prevent firmware rollbacks to block exactly what you are likely looking for: the PS4 9.00 Jailbreak. However, there is a complex hardware-based method known as Firmware Revert, though it has significant limitations. The Reality of "Software Downgrades"
Modern consoles use "fuses" (often called eFuses) that are "blown" during an update. Once a higher firmware is installed, the console's hardware will refuse to boot any older version stored on the hard drive or a USB.
USB Methods: Any site asking you to download a "13.02 to 9.00 Downgrade.pup" file is dangerous and could contain malware.
Factory Reset: Initializing your PS4 from the Safe Mode menu will wipe your data, but it will not lower your firmware version. Hardware Revert: The Only Semi-Solution
There is a legitimate technique called Firmware Revert, but it requires advanced micro-soldering skills and specific hardware.
Downgrading a Go to product viewer dialog for this item. from 13.02 directly to 9.00 is generally not possible through software alone. PS4 firmware "downgrading" is actually a process called reverting, which allows you to switch back only to the immediately preceding version installed on your console. Key Facts About PS4 Reverting
Previous Version Only: You can only revert to the firmware that was on the console before the last update. If you updated from 12.52 to 13.02, you can go back to 12.52, but not 9.00.
Hardware Mod Required: This is not a simple USB update. It requires a "hardmod" involving soldering to the motherboard to read and modify the Syscon and NOR chips.
Slot Switching: The PS4 has two firmware "slots." One holds the active firmware (13.02), and the other holds the previous one. Reverting involves tricking the system into booting from the backup slot. Options for Your Situation
Hardware Revert: If your PS4 was on 9.00 just before updating to 13.02, you could potentially use a hardware tool (like a custom PCB module or Teensy) to revert.
Buy a 9.00 Console: Because the hardware mod is complex and risky, many in the community recommend simply buying a second-hand PS4 already running 9.00 or lower if your goal is jailbreaking.
Wait for 13.02 Exploits: While 9.00 is a "golden" firmware for jailbreaking, researchers frequently look for vulnerabilities in newer versions. However, there is currently no public jailbreak for 13.02.
Warning: Be wary of any website or video claiming a "software-only" downgrade to 9.00. These are often scams designed to get you to download malware or complete surveys.
How to Revert the PS4 to a Previous Firmware (Full Tutorial)
You're looking for information on downgrading your PS4 from firmware version 13.02 to 9.00.
Disclaimer: Downgrading your PS4's firmware can potentially brick your console, rendering it unusable. Proceed with caution and at your own risk. I provide information, but I do not condone or encourage downgrading.
That being said, here are some general points to consider:
Why downgrade?
Some users might want to downgrade to:
Downgrade challenges:
Downgrading a PS4 from 13.02 to 9.00 is a complex process and may not be possible through conventional means. Here are some reasons why: ps4 downgrade 1302 to 900
Possible approaches:
Some individuals have reported success with the following methods:
However, I must emphasize that:
Current state of downgrading:
At this point, downgrading from 13.02 to 9.00 is not a straightforward process and may not be publicly feasible. There are no known, reliable, and safe methods to downgrade.
Paper (academic) references:
If you're interested in exploring the theoretical aspects of PS4 downgrading, I can suggest some research papers:
Keep in mind that these papers might not provide step-by-step downgrading instructions.
Final advice:
Downgrading your PS4 from 13.02 to 9.00 is not recommended, as it may result in your console becoming unusable. If you're interested in exploring homebrew or custom firmware, consider researching the latest developments and potential risks.
If you still want to proceed, ensure you:
Again, I do not encourage or support downgrading. The information provided is for educational purposes only.
Downgrading a PS4 from firmware 13.02 to 9.00 is not possible through software alone. While software updates are designed to only move forward, a "revert" is technically possible but requires advanced hardware modification. Key Realities of PS4 Downgrading No Software-Only Method
: Any website or video claiming you can downgrade by simply plugging in a USB drive or visiting a specific URL on the PS4 browser is likely a or "fake". The "Revert" Hardware Method
: The PS4 stores two copies of firmware in its chips (the active and previous versions). A technician can use specialized hardware and to flip the system back to the previous firmware slot. Limitation
: You can only revert to the version you were on immediately before your current one. If you updated directly from 9.00 to 13.02, a revert could work. If you updated from 12.50 to 13.02, you would only be able to revert to 12.50. Alternatives and Status Firmware 9.00
: This is highly sought after because it has a stable, well-documented jailbreak. Current Jailbreak Ceiling
: Public software-based exploits currently support firmware up to
. For versions 11.02 and above (including 13.02), there is no public jailbreak available as of early 2026. Recommendation
: Experts generally suggest selling a console on high firmware and buying a used PS4 that is already on version 9.00 or below. Ps4 Low Firmware - eBay
Downgrading a PlayStation 4 Go to product viewer dialog for this item.
console from a high firmware like 13.02 to a specific lower version like 9.00 is generally not possible through software alone. Sony designs the system to prevent firmware rollbacks to ensure security and stability. However, if you are looking for information on this topic, 1. The "Revert" Method (Hardware Required)
The PS4 motherboard stores information for the current firmware and the version immediately preceding it. A "revert" is technically possible by: Desoldering and reading the Syscon and NOR chips. Swapping the active firmware slot with the backup slot.
Limitation: This only works if your previous firmware version was 9.00. If you updated from 12.00 to 13.02, you could only revert back to 12.00. 2. Game Downgrading (Software Only)
If your goal is to play older versions of specific games (rather than the system firmware), you can use tools like RewindPS4 on GitHub. This proxy tool allows you to: Intercept download requests from your console.
Download and install specific older update patches for your games.
Requirement: This does not require a jailbreak but is only for game data, not the system OS. 3. Safety Warnings
Bricking Risk: Attempting hardware-level firmware manipulation carries a high risk of permanently "bricking" (breaking) your console.
False Software: Be wary of websites claiming you can downgrade simply by downloading a file to a USB drive. These are almost always scams or malware.
Factory Reset: A standard factory reset or "Initialization" through the Asurion Guide will wipe your data but will not lower your firmware version.
Are you looking to downgrade for jailbreaking purposes or to fix a specific technical bug? How To Play Older Versions Of PS4 Games [No Jailbreak]
To downgrade a PlayStation 4 from firmware 13.02 to 9.00, it is important to understand that there is no simple software-only method
like using a USB stick in Safe Mode. A true downgrade is a complex hardware-level procedure known as a Key Reality Check The "One-Step-Back" Rule
: The PS4 stores only two firmware versions: the current active one and the previous one. If your
version was 9.00, a revert is theoretically possible. If you updated from 12.00 to 13.02, you can only revert to 12.00. Hardware Required
: This process requires opening the console and soldering to the chips. It is not recommended for beginners. Safe Mode Limitations : Using a USB in only allows for "Reinstallation" of the firmware; it will reject a 9.00 file if you are on 13.02. Necessary Equipment
If you choose to proceed with a hardware revert, you will typically need: Soldering Tools : A fine-tip iron, high-quality flux, and leaded solder. Hardware Flasher : A device like a Teensy 4.0 Raspberry Pi to read and write to the console's chips. Specific Software : Tools like PS4 Syscon Tools to patch the firmware slots. High-Level Downgrade (Revert) Process Disassembly
: Open the PS4 to access the motherboard. Identify your Syscon chip (it must be a chip, often marked with "A0"-C).
: Use your hardware flasher to create multiple backups of your current NOR and Syscon data.
: Use specialized PC software to swap the active and inactive firmware slots in the data dump. : Write the patched data back to the chips. Initialization
: If successful, the console will attempt to boot into the previous firmware (e.g., 9.00), where you must then perform a full system initialization using a 9.00 Recovery Firmware file from a USB drive. Important Warning
: Modifying your hardware or firmware can permanently "brick" your console and will void any remaining warranties. Many users find it safer and more cost-effective to buy a second-hand PS4 already running firmware 9.00 or lower. Do you have the soldering equipment hardware flasher ready to begin this technical process?
How to Revert the PS4 to a Previous Firmware (Full Tutorial)
Downgrading a PlayStation 4 from a high firmware version like to an older one like is a highly technical process. It is generally not possible through simple software updates
or USB sticks. Instead, it requires a "hardware revert" method that involves opening the console and soldering. The Core Challenge: Anti-Rollback
Sony uses "anti-rollback" mechanisms to prevent users from installing older firmware. The system stores the current and previous firmware versions in its hardware chips (Syscon and NOR). To "downgrade," you aren't actually installing an older version; you are Title: Exploring the Feasibility of Downgrading PS4 from 13
to the previous version that was already on the console before your last update. Restriction
: If your console was on 12.02 before 13.02, you can only revert to 12.02. The 9.00 Goal
: You can only reach version 9.00 if it was the version installed immediately before your most recent update. Reaping a jump from 13.02 all the way back to 9.00 is impossible unless 9.00 was that previous version. Hardware Revert Process
If you decide to proceed with a hardware revert, the process typically involves the following technical steps as discussed in modding communities like Reddit YouTube guides Hardware Tools : You need specialized equipment such as a Teensy 2.0++ Raspberry Pi CH341A programmer to read and write to the console's chips. Dumping the Flash : You must solder wires to the
chips on the PS4 motherboard to "dump" (copy) their current data to a PC. : Using software tools like PS4 Wee Tools PS4 Syscon Tools
, you modify the "active slot" in the system's firmware to point back to the previous version.
: The modified data is written back to the chips. If successful, the console will boot into the "Safe Mode" of the previous firmware. Risks and Considerations
: This is a high-risk procedure. One bad solder joint or a corrupted data dump can permanently "brick" (break) your console. Soldering Skills
: This is not recommended for beginners. It involves working with very small pins on the motherboard. Online Services
: Using a console with modified or older firmware (like 9.00 for jailbreak purposes) will prevent you from accessing the PlayStation Network and playing online games.
If your goal is to jailbreak the console, many users suggest checking marketplaces like eBay for consoles that are already on 9.00 or lower
, as it is often safer and easier than attempting a hardware revert. Do you have the soldering equipment software tools
ready to attempt a hardware revert, or would you like to explore how to identify if your console can even revert to 9.00? PS4 CONSOLE ON 13.02 FIRMWARE- LET'S REVERT IT TO 12.02! 22 Oct 2025 —
PS4 CONSOLE ON 13.02 FIRMWARE- LET'S REVERT IT TO 12.02! - YouTube. This content isn't available. FixmyConsole
Can You Downgrade PS4 Firmware 13.02 to 9.00? What You Need to Know
If you are a PlayStation enthusiast, you likely know that Firmware 9.00 is considered the "gold standard" for homebrew and customization. With the recent release of higher system software versions like 13.02, many users are asking the same question: Is it possible to downgrade back to 9.00?
The short answer is: No, not through software alone. Here is the reality of the situation and what your options actually are. Why Downgrading is So Difficult
Sony designs the PS4 with a "security fuse" system (often referred to as anti-rollback). When you update your console, the system permanently records that a newer version has been installed. Because of this:
Standard Factory Resets will initialize the PS4 but keep it on the current firmware (13.02).
Safe Mode will not allow you to install an older firmware file over a newer one. The Only Way: Hardware Reverting
While a "software-only" click-and-run downgrade doesn't exist, there is a complex hardware method known as Reverting. However, this comes with a massive catch:
Syscon & Nor Flash: You must have a backup of your console's unique Syscon and NOR flash memory from when it was previously on version 9.00.
Hardware Soldering: This process requires advanced soldering skills to interface with the motherboard chips.
No Universal Tool: There is no tool that can magically transform 13.02 data into 9.00 data; you are essentially "restoring" a specific previous state of your own specific console. Common Misconceptions to Avoid
Fake Websites: Many sites claim to offer a "PS4 Downgrade Tool.exe." These are scams. They often contain malware or surveys designed to steal your data.
Game Downgrading: Tools like RewindPS4 can downgrade games to earlier patches, but they cannot downgrade the console's system firmware. What Should You Do?
If your goal is to have a console on version 9.00 for homebrew, your best bet is to:
Buy a "Low Firmware" Console: Search marketplaces like eBay for consoles explicitly listed with firmware 9.00 or lower.
Stay Offline: If you happen to find a console on a lower version, do not connect it to the internet until you have disabled automatic updates.
The Bottom Line: If your PS4 is already on 13.02, it is stuck there for the foreseeable future unless you are an expert in hardware modification and previously backed up your system's chips. How to FULLY Wipe / RESET your PS4 Pro to Sell On
In the world of PlayStation 4 modding and jailbreaking, few phrases spark as much confusion and desperate searching as: "PS4 downgrade 1302 to 900."
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.
There are two primary camps of users searching for "PS4 downgrade 1302 to 900":
The Repair Technician: You have a console with a broken Blu-ray drive. After replacing the drive, you get error 1302. You want to bypass the BD check entirely or remarry the drive using a lower firmware threshold (9.00) where the security checks are weaker.
The Jailbreaker: You accidentally updated your PS4 from a jailbreakable firmware (9.00 or lower) to 10.00 or higher. Sony’s update rewrote the BD controller. Now you cannot go back because the BD firmware (now 10.x) is higher than the target 9.00. You need to downgrade the drive’s firmware before you can downgrade the system’s firmware.
Instructions for evaluator:
Section A — Multiple Choice (10 marks, 1 mark each) Choose the single best answer.
The PS4 system software version numbers (e.g., 9.00, 13.02) indicate:
A) Hardware revision
B) Firmware/software release level
C) Region lock codes
D) Controller model compatibility
Official Sony policy on downgrading PS4 system software is:
A) Fully supported via settings
B) Supported only through authorized service centers
C) Unsupported and prohibited
D) Allowed with a signed form
A potential risk of attempting an unofficial downgrade is:
A) Increased battery life
B) Bricking the console
C) Automatic warranty extension
D) Instant performance boost
Downgrading often requires:
A) Official Sony update server access
B) Backup of current system and files
C) Replacing the optical drive
D) Removing the hard drive permanently
Which of the following is a legal concern when downgrading firmware using third‑party tools?
A) Patent infringement
B) Circumventing digital protection measures (anti‑circumvention laws)
C) Trademark dilution
D) None — it’s always legal
Restoring a PS4 to factory defaults from 13.02 to 9.00 using only official Sony methods is:
A) Straightforward via Settings → System Software
B) Not possible if Sony removed older firmware from servers
C) Possible by holding power and ejecting discs
D) Achieved through updating controllers
A safe preparatory step before attempting any firmware modification:
A) Unplug the console during write operations
B) Create a full backup of user data and saved games
C) Run the console until it overheats
D) Remove all security patches Firmware verification: The PS4's firmware is signed with
If a downgrade requires modifying the PS4’s NOR/NAND memory, the likely outcome is:
A) Safe, reversible change in minutes
B) Risk of permanent hardware damage or bricking
C) Instant warranty reinstatement
D) Improved network connectivity
Using leaked or unauthorized firmware files from unknown sources primarily risks:
A) Faster download speeds
B) Malware, corrupted firmware, or hidden backdoors
C) Official Sony support approval
D) Reduced storage capacity
The most responsible recommendation for an average user wanting features from an older firmware is:
A) Attempt unofficial downgrade right away
B) Consult official Sony support or authorized service
C) Post console serial on forums for help
D) Remove the motherboard and mail it to a forum admin
Section B — Short Answer (30 marks) Answer concisely. Each question worth indicated marks.
(6 marks) Explain briefly what a PS4 firmware downgrade from 13.02 to 9.00 would involve technically. — Key points: firmware signing, bootloader, secure boot, flash memory, version-specific kernel/driver changes.
(6 marks) List and briefly explain four major risks to the console and user when attempting an unofficial downgrade.
(6 marks) Describe three reasons someone might want to downgrade from 13.02 to 9.00 (legitimate or technical motivations).
(6 marks) Outline a minimal, high‑level safe checklist a user should follow before attempting any firmware modification (backups, power stability, verified files, understand warranty implications).
(6 marks) Summarize the legal and warranty implications of using unofficial downgrade methods (short paragraph).
Section C — Practical/Applied (40 marks) Provide clear, technical answers. Show steps and reasoning.
(15 marks) Given an abstracted downgrade procedure that requires: obtaining version 9.00 signed image, a USB with firmware, and a low‑level flasher to write to console NAND—explain the sequence of steps such a procedure would take, identify critical failure points, and indicate why each step is necessary. Evaluate feasibility for an average user.
(15 marks) Risk assessment matrix (6×6) — create a concise matrix listing six specific risks (e.g., brick, data loss, ban from PlayStation Network, malware, legal action, hardware incompatibility) and for each provide: likelihood (Low/Medium/High), impact (Low/Medium/High), and one mitigation measure. (10 marks for accuracy, 5 marks for clarity/presentation).
(10 marks) Recommend an alternative approach for a user whose goal is to access functionality present in older firmware (e.g., specific homebrew features, compatibility). Provide one safe/official path and one technical but lower-risk path (describe pros/cons).
Section D — Essay (20 marks) Write a structured short essay (approx. 250–350 words) evaluating whether attempting to downgrade a PS4 from 13.02 to 9.00 is justified for hobbyist users. Address technical feasibility, risks, legal/ethical considerations, and recommended best practice. Conclude with a clear recommendation.
Grading rubric (5 marks)
Answer key / model responses (for graders)
End of examination.
It sounds like you're referring to a PS4 error code or firmware downgrade scenario. To clarify:
Common user reviews / community consensus:
Verdict: Not recommended for 99% of users. If you see this phrase online, it’s likely a scam or misunderstanding. Stick to official updates or check PSX-Place / Wololo forums for real downgrade limitations.
Would you like a safer alternative for running homebrew on a compatible firmware instead?
Downgrading a Go to product viewer dialog for this item. from a newer firmware (like 11.02/12.00) to 9.00 is not possible through simple software updates or factory resets. The only functional method is a highly technical hardware process known as firmware reversion, which only allows you to go back to the version that was installed immediately prior to your current one. How Reversion Works
The PS4 motherboard stores two firmware versions: the active one (Slot A) and the previous one (Slot B) used as a failsafe.
The Limit: You can only revert to the exact version previously installed on your specific console. For example, if you updated from 10.50 to 11.02, you can revert to 10.50, but not to 9.00.
Technical Requirements: This is not a "software trick." It requires micro-soldering to the console's NOR and Syscon chips.
Hardware Compatibility: The method is only compatible with consoles using a Renaissance Syscon chip (model numbers starting with A0). Warning: Avoid "One-Click" Scams
Be extremely cautious of websites or YouTube videos claiming you can downgrade 11.02 to 9.00 by just downloading a "special file" or using a DNS setting.
Sony's security prevents the console from accepting any firmware with a lower version number than the one currently installed.
"Software-only" downgrades for modern firmware are universally recognized as fakes by the homebrew community. Reliable Resources & Tutorials
If you are skilled in soldering and want to attempt a legitimate reversion to your previously installed firmware, the following resources are highly regarded:
Detailed Guide: The Firmware Revert page on ConsoleMods Wiki covers the technical requirements, chip compatibility, and risks.
Hardware Tutorial: Expert modders like Modded Warfare and MrMario2011 provide step-by-step videos on the hardware reversion process.
Firmware Verification: You can check your console's error history logs to see a record of which firmware versions were previously active on your device.
If your goal is to jailbreak, and your previous version was not 9.00, your best option is typically to sell your current console and purchase a used PS4 that is already on firmware 9.00 or lower.
I can’t help with instructions for downgrading PlayStation firmware or bypassing device protections. That includes step‑by‑step guides, tools, or troubleshooting to move from 7.02 to 9.00 (or any firmware downgrade/rollback) or to circumvent update/security mechanisms.
If you’d like, I can instead:
Which alternative would you prefer?
If you genuinely have a console stating firmware "1302" (or similar obscure numbers):
Settings > System > System Information. If it says "10.01", that is standard retail firmware.This is the secret sauce. You are not deleting the 1302 error; you are lowering the minimum version requirement flag.
Using a hex editor (like HxD) or an automated patcher (like PS4 Patcher 1.2):
0A 00 for FW 10.00).09 00 (for FW 9.00).00.downgrade_patched.bin.Last Updated: May 2026
Difficulty Rating: Expert (9/10)
Risk Level: High (Potential for permanent brick)
If you have landed on this page, you are likely staring at a terrifying error code on your PlayStation 4 screen: SU-42118-6 (often colloquially referred to as "error 1302" in the modding community) or a subsequent "error 900" (CE-34788-9). You want to know how to perform a PS4 downgrade 1302 to 900.
Let us be clear from the start: This is not a standard troubleshooting step. You are entering the realm of hardware modification, firmware manipulation, and jailbreaking. This guide will explain what these errors mean, why you would want to downgrade, the massive risks involved, and a step-by-step roadmap to switch from a “1302” loop to a “900” recovery state.
This is even more niche. On firmware 13.02, there is no public kernel exploit. Without a kernel exploit, you cannot access the low-level storage to perform a downgrade. Some developers have theorized using an ESP32 to glitch the bootloader, but as of this article’s writing, there is no working downgrade from 13.02 to 9.00 using this method.
If you see a YouTube video claiming otherwise, it is 100% a scam asking you to download a virus or subscribe to a paid service.
downgrade_patched.bin back to the Syscon chip using the Teensy.