PS4 Firmware Downgrade: Reverting from 11.02 to 11.00

[@_abw]

Btw there is alternative points to connect too rather than soldering it on the chips both the sys con and the nor except the pin 15 of syscon

[@idreestech]

@_abw Thanks for the tip! Alternative points can definitely make soldering a bit easier, especially when dealing with delicate components like the Syscon and NOR. You're right about pin 15 of the Syscon-no way around that one! Appreciate you sharing this info! 🙌

[@BryanAnon-dh5qj]

What is the name of adapter? Which you connected with nor chip pls tell me 6:07

[@idreestech]

ISP connector for in-circuit programming.

[@BryanAnon-dh5qj]

From where I get it

[@BryanAnon-dh5qj]

Hey this IPS CONNECTOR comes with universal programmer??

[@JC-ds4ds]

Hello, I have my PS4 FAT CUH-1115A SAB-001 board, I have a blue LED for 5 seconds and it turns off, the APU does not heat up, IT DOES NOT RECEIVE VOLTAGE IN THAT PART, I thought it was the syscon, I checked it thanks to you, I checked voltages and everything is ok, I analyzed it and did the dump and put it back in the patched one but, I still can't get out of it and it turns off, what can I do? Do I have to change the syscon?

[@idreestech]

Since you've already checked the syscon and the APU isn't getting power, it's possible that there might be a different issue with the power path itself, maybe even a fault on the motherboard.

[@bourekful]

اهلا اخي.هل استعمل نفس الطريقة التي في لفيديو وتنجح العملية.،،

[@idreestech]

"@bourekful أهلاً أخي! نعم، يمكنك استخدام نفس الطريقة الموجودة في الفيديو، وبإذن الله ستنجح العملية. إذا واجهت أي مشكلة أثناء التطبيق، لا تتردد في السؤال وسأكون سعيداً بمساعدتك. 👍"

[@serviplay]

hi, friend. My Play 4 Slim model has the LOAD BIOS -8 error and I have patched the SYSCON and the NOR with the number 3 and 4 and the same error continues. can you help me?

[@idreestech]

Hi @serviplay! The LOAD BIOS -8 error on your PS4 Slim could indicate an issue with the system's NOR or SYSCON, especially since you've already tried patching them. Ensure that the patches you've applied to SYSCON and NOR are compatible with your model. A mismatch could cause the same error to persist. If patching NOR 3 and NOR 4 hasn't worked, try re-flashing both SYSCON and NOR at the same time. Sometimes, updating only one part can cause a mismatch between the components. If you’re certain the SYSCON and NOR are fine, you might want to try all remaining patches on the NOR. It must boot on any one of these patches.

[@serviplay]

Thank you for you reply. Excuse me. You can say me How can i update the syscon ?

[@Sanjay-y4m9c]

Hi ​@@idreestech

[@idreestech]

Hey @Sanjay-y4m9c! How's it going? 😊

[@galanciito5736]

Can you add here some links of Where to buy the tools? Either aliexpress or Amazon UK and US. Nice video.. Thanks.

[@idreestech]

In the description

[@zerogaming8967]

How about a teensy 2.0++ ?

[@idreestech]

It may behave as the same problem, but I never used it with a Syscon chip.

[@zerogaming8967]

@@idreestech Idrees sir i have a ps3 fat cech l04 , the last model with ylod there a blown fuse f6304 I cant find the culprit any suggestions?

[@idreestech]

@@zerogaming8967 Yes, could you check for the short circuit at the ends of the fuse if the short component is found and rectified then put an intact fuse.

[@mohammedshaheen1710]

Ask about adapter connection with nor chip to rewrite software ,you dont appear it if you can show it ,i will appreacit and so glead for you sir

[@idreestech]

I have given a link in one of comments answered.

[@habtwaberihun6087]

SU-42118-6 how can i fix it I try to fix it... Change HDD update with safe mode but it won't worke

[@xwarchiefixi5103]

Me again brother😅, I have another ps3 with one hard drive it says that It can’t find the correct stogare and with other 3 it says that there is no storage with software update on it. I even formated one and put the latest version 4.91 but it still shows the same thing. I’m guessing bad hdd reader, Can I have your thoughts on this? please and thanks. 🙏

[@xwarchiefixi5103]

Update: the hdd that shows something different is bricked but my ps3 still doesn’t read the other ones which are working

[@_Murp_]

One question, why don't you remove the syscon chip to work better and have not risk breaking the leg that needs to be desoldered ? I ask because I've already seen a couple of YTbers who have broken it...

[@idreestech]

It is better to pull one pin instead of whole pins. All we need to connect four or five wires from the Teensy. Pulling off an on the entire chip is a big hassle for a non technical person.🧍‍♂️

[@Omerkubur]

Can you provide more details explanation about the nor chip adapter procedure and a link for the adapter and universal programmer tool

[@idreestech]

www.aliexpress.com/item/32770360490.html www.amazon.com/SETCTOP-EMMC-Nand-Extremely-universal-Programmer/dp/B077QGH5T8

[@idreestech]

The link is also provided in the description. www.alibaba.com/product-detail/Original-RT809H-Universal-Programmer-with-31_60708155259.html www.aliexpress.com/item/32770360490.html www.amazon.com/SETCTOP-EMMC-Nand-Extremely-universal-Programmer/dp/B077QGH5T8

[@Omerkubur]

Thank you so much for taking the time to reply it's a really expensive tool but it's alot cheaper in alibaba store

[@issazardi370]

اخي انا عندي teensy 2.0++ ليس فيها 3v

[@idreestech]

@issazardi370 أخي، إذا كان لديك Teensy 2.0++ ولا يوجد بها 3V، يمكنك استخدام منظم جهد خارجي لتحويل 5V إلى 3.3V لتشغيل الدوائر التي تحتاج هذا الجهد. تأكد من أن التيار يلبي متطلبات Teensy. إذا كنت بحاجة إلى المزيد من المساعدة في إعداد ذلك، أخبرني!

[@KurniawanSidik-ow7ff]

Dear Sir, If patch nor 3 failed, do we have to flash syscon patch file again when we flash patch nor 4? Or just flash the patch nor 4 .bin

[@idreestech]

If patch NOR 3 failed during the process, and you are moving on to patch NOR 4, you typically do not need to reflash the syscon patch file unless something specifically corrupted or interrupted the syscon patching process. Here’s what you should do: Flash the Patch NOR 4 .bin: If the syscon patch file was successfully flashed before the failure of patch NOR 3, then you can proceed directly to flashing the patch NOR 4 .bin. Verify Syscon Patch Integrity: If you suspect there might have been an issue with the syscon patch (like corruption or incomplete flashing), you may want to reflash it just to ensure everything is properly in place before proceeding. However, in most cases, you can continue with the next NOR patch without reflashing the syscon as long as it was applied successfully the first time. If you encounter any issues or have further questions during the process, feel free to ask!

[@LandiKd]

Can you do one video for ps4 pro please

[@idreestech]

@LandiKd Thanks for the suggestion! 👍 I’ll definitely consider making a video for the PS4 Pro. Stay tuned, and let me know if there’s anything specific you’d like to see covered!

[@user-zj4hl9ui8t]

Syscon not patchable on my side … is it dead for me ?

[@idreestech]

@user-zj4hl9ui8t Procede and try to complete this process and watch it because sometimes these tools may not tell you correctly that you may be downgraded.

[@callmeCog]

Thanks so much for this! I was attempting to do this almost a year ago using information from the Modded Warfare channel, but that guide was using a teensy 2.0 and those are no longer available to purchase! I bought the 4.0 but I was nervous about connecting the wires to the correct pins so I put it on hold until I could be sure what I was doing and this video is exactly what I needed! Earned a sub, keep it up 🤝🏼

[@idreestech]

That's awesome to hear! I'm glad the video gave you the clarity and confidence to continue your project. The transition from a Teensy 2.0 to 4.0 can definitely be a bit nerve-wracking with the wiring, but it sounds like you're on the right track now. Thanks for the sub! If you run into any more issues, feel free to reach out-happy to help! 🤝🏼

[@3terrathreed466]

Good job👍 One question. Can I dump my syscon and may be nor with fw 9.00, after will update ps4 to fw 11.5 (actually fw). Then bye game in ps store ( because haven't dump this game in share) And after this comeback to fw 9.00? You opinion possible or not?)))

[@idreestech]

Could you give it a try? I never have done it.

[@amnashahid5809]

Good Videography, Exceptional Sound, Informative Suggestions & Superb Technical Details. It is a Breathtaking Video. Amazing. 👍

[@idreestech]

Thanks a ton

[@idreestech]

Thank you so much for your kind words! I'm thrilled to hear that you enjoyed the videography, sound, and technical details. Your support and feedback mean a lot to me!

[@Stan-hc6fy]

так и не понял нужно ли менять сам чип Syscon на болванку или нет? в видео это не показано

[@idreestech]

@Stan-hc6fy Привет! В большинстве случаев замена чипа Syscon на болванку (новый, пустой чип) не требуется для прошивки. Однако это зависит от состояния чипа и версии прошивки. Если Syscon работает нормально, его перепрошивка обычно достаточна. Если остались вопросы, дай знать!

[@Stan-hc6fy]

@ Спасибо ! А что значит нормальная работа syscon?) и с какими версиями прошивок понадобится болванка?

[@touristdestination1]

It is not clear :) it is very true :)))) where wires from Syscon goes at which points on Tensy 4.0 and are they same as on other Teensy models? You haven't explained that clearly in the video and there is nothing connected with that in descriptions? (example schematics for teensy ) you just flyby with supersonic speed

[@idreestech]

Thanks for the feedback! I appreciate you pointing that out. I realize I went through that section pretty quickly. I'll add a detailed schematic and a more thorough explanation to the description so it's clearer where the Syscon wires go on the Teensy 4.0. The connections are a bit different compared to other Teensy models, so I'll make sure to address that as well. Stay tuned for the update!

[@touristdestination1]

Thanks for your commitment

[@sephiroth-k8f]

Bro which part of india are you based from?

[@idreestech]

Pakistan

[@sephiroth-k8f]

Ok thks very informative video

[@idreestech]

🤗

Hi, thanks for the tutorial. I like it to make a question, why do you solding in 3V and not in 5V of diagram? The diagrams are incorrect? Or it is for changes in fat, slim, pro.. thanks

[@idreestech]

It should connect to the 3.3-volt point as Syscon VDD is 3.3 volts. Why connect to the 5-volt point?

@@idreestech Yes you are right thanks, I understand now this diagrams need it a fix in volts.

[@idreestech]

Using the 5-volt point can also damage the Syscon chip.

[@idreestech]

www.aliexpress.com/item/32770360490.html www.amazon.com/SETCTOP-EMMC-Nand-Extremely-universal-Programmer/dp/B077QGH5T8

[@rostomzerrougui]

Can i use the ch341 programmer with teensy?

[@idreestech]

@rostomzerrougui Yes, you can use the CH341 programmer alongside the Teensy, but they serve different purposes. The CH341 is mainly for programming and interfacing with EEPROMs and certain microcontrollers, while the Teensy is typically used for emulating input devices or custom microcontroller tasks.

[@Elpola-o6p]

Con rasperry pico nosé puede programar ?

[@idreestech]

www.psdevwiki.com/ps4/JAISPI

[@Elpola-o6p]

@@idreestech este video sirve para el rasperry pico Bro ? Esperemos charlar bien 😃

[@idreestech]

¡Sí, querida!

[@Elpola-o6p]

@@idreestech voy a comprar uno pero tiene que ser ps4 fat o las demás se pueden ?? Todas las ps4

[@Elpola-o6p]

Rasperry pico 2040 ese está bien ?

[@roy.8381]

Hey, is it possible to use Teensy v3.1 or v3.6, or the Regular 2.0 version? thats all i can find locally

[@idreestech]

Both devices require a regulator, but the Teensy 4 has a built-in one.-in one.

[@InterestingStor1es78]

Can it be done without removing ps4 parts and only doong pc stuff?

[@idreestech]

Unfortunately, it is not possible to downgrade the PS4 firmware from version 11.2 to 11.00 (or any earlier version) using only software methods like a PC. Sony uses a process called "eFuse" which prevents downgrades by physically burning fuses on the processor as updates are applied. Once a fuse is burned, the system will refuse to load older firmware. Here are some reasons why downgrading isn't feasible: eFuse Mechanism: When the PS4 updates, it irreversibly changes internal fuses, making it impossible to go back to a previous firmware. Signed Firmware: PS4 firmware is signed by Sony with unique cryptographic keys. If a lower firmware version is installed, the console will detect it as invalid and refuse to boot. Limited Workarounds: In the past, hardware-based solutions like modding the system were the only way to attempt downgrades, but even those methods are extremely complicated and risky. They often involve complex hardware modifications that are not software-based. In conclusion, a firmware downgrade on a PS4 from version 11.2 to 11.00 without opening up the system or using specific hardware tools is not possible.

[@TMGHD272]

Is there arduino similar alternative teensy?

[@idreestech]

No idea.

[@alispeed5095]

Hi am a new sub! Am seeing a version 11.50 jailbreak floating around on youtube. Is it fake? Please share your opinion

[@idreestech]

Yes, it's fake as of now.

[@alispeed5095]

@@idreestech ty

[@idreestech]

UWC

[@shirokumahb54]

so if both slots weren't jailbreakable lets say 11.50 & 11.02 this means i can't downgrade to 11.00?????

[@idreestech]

Yes, if both slots are not jailbreakable (e.g., 11.50 & 11.02), you cannot downgrade directly to 11.00

[@shirokumahb54]

@@idreestech so i suppose the undirect way is to get an even lower FW syscon ship and solder it right or reprograming stuff???

[@idreestech]

Unfortunatly No way dear.

[@mmee6396]

hello sir, can i use ams1117 3,3v to lower the voltage? (teensy 2.0 ++)

[@idreestech]

Yes, @mmee6396 you can use it. AMS1117 is a series of low dropout three-terminal regulators with a dropout of 1.3V at 1A load current. AMS1117 offers a thermal shutdown function, to assure the stability of the chip and power system. It uses a trimming technique to guarantee output voltage accuracy within 2%. Other output voltage accuracy can be customized on demand, such as 1%.

[@mmee6396]

@@idreestech thank you for answering my question

[@mmee6396]

@@idreestech can you reference the type code AMS1117 2249 or AMS1117 DN249... Or the most suitable one to combine with teensy 2.0 ++ so that it is almost exactly the same as MCP1812s-3302E/DB 🙏, because in my country it is very difficult to get MCP1812s-3302E/DB 🙏

[@idreestech]

@mmee6396 For a substitute with the Teensy 2.0++, the AMS1117 3.3V (either 2249 or DN249) should work well as a replacement for the MCP1812s-3302E/DB, as it provides a stable 3.3V output. Just double-check the current requirements to make sure it matches your setup.

[@houssamlovy2238]

Hello, in teensy ++2 there are pin in buttom side have 3.3 v, can i use it ?

[@touristdestination1]

what about adapter that you put liquid plastic on it ?

[@idreestech]

The links are provided in the description.

[@touristdestination1]

Is there an aditional IC(CHIP) you put under Hot glue(liquid plastic)on sop8 adapter or you make plain contact to the points 1-8, and which wire you use for data 0.2mm?

[@mutazgaming9640]

Hello asking for nor pin diagram points on teensy 4.0

[@idreestech]

Not available yet.

[@mutazgaming9640]

@@idreestech thanks for your responds what of uart programer to nor pin out?just like the way you connected to your nor

[@Alph4_XX]

Its important to lift up the pin? Or i can also leave here soldered

[@idreestech]

If earlier SYSCON debug mode is off then you have to lift up the pin even solder the wire to it, otherwise no need to lift it up and the wire.

[@Alph4_XX]

@@idreestech soldering is not a problem, the problem is lifting up the pin, im scared of doing that

[@Alph4_XX]

@@idreestech what temperature should i set on thermal gun?

[@idreestech]

Maximum 380 degrees.

[@Alph4_XX]

​@@idreestechCelsius or fahrenheit?

[@giuseppeloche5415]

it works on a PS4 Slim CUH-2216B ? in this ps4 slim i have installed the firmware 11.50

[@idreestech]

PS4's firmware can be downgraded once it has been updated to a newer version. This means that once a system is on firmware 11.02 or higher, it can be downgraded to only a previous version with specific hardware (SYSCONS A0#-COL only) but SYS-CON with a random number could not be patched.

[@muhammadhasaanali9972]

I live your videos .can u help me , my ps4 slim have a bad psu. Please

[@sport-sf9si]

After completion, is it removed? teensy Or install it forever on ps4?

[@idreestech]

@sport-sf9si After completing the process, the Teensy is usually removed from the PS4. It's only needed temporarily for tasks like dumping or flashing the NOR chip. Once everything is done and working properly, you can disconnect it. Let me know if you have any other questions!

[@medecine4all513]

Hi guys , would someone that has a SAC001 motherboard tell me what are the values of the 5 resistors arround the NOR flash memory (a mx25l25635f chip near the south bridge) ,i need their values as i think two of them are faulty(one connected to the SCLK pin and the other to the MISO pin), anyone that can help i will appreciate it,may god bless every one.

[@idreestech]

Hi medecine4all513 you can use or verify all five resistors with the value of 47 ohms. In some motherboards, one of five is at 22 ohms but you can use all with the same value. These all are for NOR data connections couplings to the Southbridge chip, even you can make jumpers on them in case of unavailability.

[@eletronics007]

hi can i do the same with ps4 pro

[@idreestech]

Yes, soon I will upload video for PS4.

[@ТайлерДерден-ц6б]

Можно ли откатить прошивку через флешку у 11.52 на 11.00

[@idreestech]

К сожалению, откатить прошивку PS4 с версии 11.52 на 11.00 через флешку невозможно. Sony использует систему eFuse, которая физически предотвращает откат на более старые версии прошивки. Когда консоль обновляется до новой версии, система проверяет, сгорели ли определенные предохранители, и если они сгорели, откат прошивки будет невозможен. Даже если у вас есть файл прошивки версии 11.00, система не примет его и не позволит установить более старую версию. Это мера безопасности для предотвращения взломов и защиты данных. Если у вас возникли проблемы с обновлением, возможно, вам придется дождаться новых патчей или обновлений от Sony.

[@ТайлерДерден-ц6б]

Хорошо спасибо просто хотел сделать прошивку

[@ТайлерДерден-ц6б]

А что если сделать сброс 'полный' версию также останется?

[@idreestech]

Пожалуйста! Если у вас будут еще вопросы по прошивке или другим техническим моментам, не стесняйтесь обращаться. Удачи с прошивкой!

[@idreestech]

Да, если сделать полный сброс (фабричный сброс) на PS4, версия прошивки останется неизменной. Фабричный сброс удалит все данные и настройки на консоли, но прошивка (система) не будет откатана на более раннюю версию. Прошивка консоли сохраняется независимо от того, делаете ли вы сброс данных. Единственный способ изменить прошивку - это обновить до новой версии, но откатить на более старую версию невозможно, так как Sony блокирует эту возможность для безопасности системы. Если вам нужно очистить данные консоли, но при этом сохранить текущую версию прошивки, то сброс может помочь, но прошивку это не изменит.

[@RicardoMartinez-w5l]

but how in the world the updating of firmware is via software and downgrading it tru hardware??

[@idreestech]

Firmware Updates (via Software): Updating firmware is usually done through software because the manufacturer allows you to install new firmware over the existing one using a USB drive, disc, or internet connection. The system recognizes it as an official update and overwrites the older version. Firmware Downgrades (via Hardware): Downgrading, on the other hand, is blocked by the system because manufacturers often lock out older firmware versions for security reasons. To bypass these protections, you need hardware tools (like a Teensy or other programmer) to manually flash or modify the system's NAND/NOR chip, which stores the firmware. This hardware-level access allows you to force the downgrade. So, updating is easy via software since it’s an official process, but downgrading requires hardware modifications to bypass security measures. Let me know if you need more info!

[@alienpredator1973]

works if want downgrade 11.52 to 11.00

[@idreestech]

Can be revert back to the version that was last updated.

[@sasha6729180]

syscon locked, ps 4 dead(

[@mohammadjavadmonjezi]

bro as if doing this wasn't scary enough already😭 sorry for your loss🙏🏻

[@idreestech]

Have you backed up the flash?

[@salahdaoui-l4u]

for fat or slim never mind ? thx bro !

[@idreestech]

This video is intended for all models, but please remember to consider the wiring.

[@salahdaoui-l4u]

​@@idreestech Thx brother ! for respons

[@idreestech]

@salahdaoui-l4u This method generally works for both the PS4 Fat and Slim models, as long as they’re compatible with firmware downgrades. Glad you found the video helpful-let me know if you have any more questions!

[@idreestech]

@salahdaoui-l4u You're very welcome, brother! Happy to help, and thanks for the good vibes! 😊 Let me know if you need anything else.

[@salahdaoui-l4u]

Thank You Very Much !

[@applejuceYT]

Can I go to 11.00 from 11.52

[@idreestech]

Only if 11.00 was your PREVIOUS firmware.

[@FakrudhinAbdulrehman]

Bro I have updated from 10.72 to 11.02. Is it possible to revert again to 10.72? ​@@idreestech

[@idreestech]

Fortunately, it is possible to revert your PS4 firmware from version 11.02 back to 10.72.

[@FakrudhinAbdulrehman]

@@idreestech Jazak ALLAH ,😄

[@Jeeparellofans]

​@@idreestechа если при возврате к 10.72 ,то далее можно обновится до 11.00?

[@TonDasPromos]

É bem delicado o processo realmente não é pra qualquer pessoa!

[@idreestech]

sim, eu concordo com você.

[@abdul_wahab_kh786]

Umm do you have a shop ?

[@idreestech]

Yes, I have.

[@nikkam3176]

is it possible to downgrade without the original hard drive?

[@Rollsjr]

Yeah

[@mohammadjavadmonjezi]

when you change hard drive you are forced to reinstall PS4 os to your current version or higher which leads to both slots of the syscon be the same version of os which results in no longer being able to revert to the previous version

[@donenoun-it]

Great guide

[@idreestech]

Glad you think so!

[@nofisega75]

انت ممتاز وشرح جداا جيد ❤

[@idreestech]

Thanks, so nice!

[@CJ_BOX]

일반인이 작업하기엔 벅찬 작업이네요 @_@ 잘보고갑니다 ^^

[@owomushi_vr]

ありがとうございます

[@idreestech]

お役に立ててよかったです!

[@khedermobasser9823]

good

[@idreestech]

Thanks for sharing!!

[@kspro7574]

❤ nice

[@idreestech]

So nice!

[@makvlogs2323]

Nice sir

[@idreestech]

Thanks and 🤗

[@TOMelectronicsfix]

good work

[@rmorteza21]

Very nice

[@idreestech]

☺️🤗

[@henryjuliuskissiedu7815]

Very informative

[@idreestech]

Glad you think so!

[@Master-PS0]

good job

[@idreestech]

Thank you! Cheers!

[@abdulrauf3369]

Nice

[@idreestech]

So nice

[@Marian-hg5eq]

11.02

[@idreestech]

Thanks for catching that! The correct version is indeed 11.02, not 11.2. I appreciate the clarification!

[@MHSanaei]

😮

[@idreestech]

Well come !🤗

[@sadeghesfandiary6297]

سلام مهندس

[@idreestech]

درود بر شما

[@sadeghesfandiary6297]

@@idreestech من خودم تعمیرکارم تو مشهد ایران این روش بورد تنسی ورژن۴ دارم با اون میتونم دانگرید بزنم مدل فت رو؟

[@idreestech]

I found the Teensy 4 the best.

[@sadeghesfandiary6297]

@@idreestech شما اصالتا کجایی هستی داداش

[@mohamadsaleh1673]

tom pan tchot stealer

[@idreestech]

I’m not sure I understand your comment. If you have any questions or need help with something specific, feel free to let me know!