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Release: BwE PS4 NOR Statistics

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Hello! Following my this program BwE PS4 NOR Statistics v1.00, another micro version of my PS4 NOR Validator, is designed solely to validate your NOR based on statistics only from Better Way Electronics!

Why make this you ask? Entropy and statistics are a well used methodology in the malware analysis field to determine if a binary file is encrypted, and by how much.

What is entropy? Entropy is a method for measuring uncertainty in a series of numbers or bytes. In technical terms, entropy measures the level of difficulty or the probability of independently predicting each number in the series.

What has this got to do with PS4s? Well the PS4's NOR is almost entirely encrypted and so with a collection of known valid NOR's it is possible to determine the level of entropy that represents a valid NOR and what level of entropy would represent a corrupt NOR.

When corruption occurs it will generally wipe out a large chuck of the NOR, cause the NOR to repeat itself or will fill the NOR with junk. All of this will decrease or severely increase the entropy.

Seeing as the PS4 firmware is likely to add more or less complexity with each update I have made available a settings file where you can adjust the predicted statistics.

Have fun! And yes this is made specifically for other PS4 repairers like myself. Maybe it will be useful for something else one day. Remember the fun we had with the PS3 NOR? :'(

NOTE: My program is designed for Windows 64 - If this is a problem then you're computing wrong.

  • Release Date: 5/11/18
  • Version: 1.0
  • MD5: BDABAAB45995A3D1E7AE83541E752721
  • Chiptune: Dubmood - A Tribute to Kootie
  • Loader Art: BwE (Credits to Maniac (Netflix))





This is what a valid NOR looks like:


This is what an invalid NOR looks like:



Sorry for the copypasta! Enjoy either way!






Edited by BwE

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15 hours ago, GregoryRasputin said:


Well my program was released for those who can't wait for my 12,000 line NOR validator. 


It's simple as it tells you with bright colours if your NOR is abnormal. A hex editor can't do that unless you already know what to look for. Not every one does. Hence the colours! 


I'll update it with a COREOS check and an additional corruption validation. 


Either way my main validator will arrive soon. I'm able to detect and fix corruption in CID that causes BLOD. So it's getting more accurate! 



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to start thanks for those programs that are great.
I have several corrupt ps4 nor in the unk file or whatever.
Do you know what is repairable or not ?
I enclose a screenshot of a SAB with the original default of ram (elpida) replace with samsung and always blod.
After checking the nor it misses 4 lines in the unk.
Do you know if the problem could come from there, which I believe.


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I also have a SAA with corrupted nor (that's for sure) because the firmware is in danger and when I try to make an installation I have an error SU-39176-6.
It does not come from the motherboard because I graft a kit (apu, nor, syscon and ram) on this same card and it works perfectly.
I have not been able to repair the nor despite several attempts.
I can provide the original saa file if you want.
After checking on a second SAB with exactly the same problem (blod remaining even after replacing the ram) I have corruption in the same place in the unk.
So I'm sure it's these 4 missing lines that are problematic.

Edited by Sylvain

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@GregoryRasputin Thank you for your answer that's nice. 🙂

I am in the blur because as much hardware level, the ps4 I know by heart, but software level is another problem for me ... lol

And sorry in advance for my English, being French and not very good at English, I mainly use a translator 🤪

added 7 minutes later

Otherwise for information I made a complete transplant (apu, ram, syscon and nor) on a motherboard in blod with 4 missing lines in the unk.

I'm still in blod but the firmware is also corrupt (already before the transplant) but not in the same place because it had no default ram at the origin, just a blod from the firmware ?

I do not know yet.

Tomorrow I would look for corruption and if I can do something about it.

Tired of corruptions of nor ! lol

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bonjour, envoyez-moi une copie de chaque NOR avec lequel vous rencontrez des problèmes. N'oubliez pas que certains problèmes sont en effet réparables! Veuillez étiqueter le NOR pour que je sache à quoi je traite. Est-ce que ça démarre? Cela produit-il une erreur? Qu'est-ce qu'un firmware, etc. N'oubliez pas de m'envoyer un email, je n'étais apparemment pas abonné à ce fil! Enfin, assurez-vous de disposer de la dernière version de mon programme. Qui est 1.3.5

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18 hours ago, Sylvain said:

@BwEmerci pour votre réponse rapide.🙂

Quel est votre adresse mail ?

bwe at betterwayelectronics.com.au

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