Removing or Zerofilling Watermarks from PS4 PUPs Guide via Zecoxao

Those interested in learning how to remove (zerofill) watermarks from retail / debug / dev / test PS4 PUP files can check out the Removing or Zerofilling Watermarks from PS4 PUPs video tutorial that PlayStation 4 Scene developer @zecoxao shared today via Twitter from his (C)ontrol e(X)ecute YouTube Channel.

Before jumping in, here are some related articles sorted by date with the oldest first:

• BLSUnpack to Unpack SLB2 Structured Files for PS4 / PS5 PUPs
• PS4 PUP_Decrypt & PUP_Unpack: Decrypt / Unpack PS4 Updates
• Decrypt_PUP_Header PlayStation 4 Patches
• PS4 Inner PUP Files of PS4UPDATE System Comparison
• PS4 PUP Unpacker to Unpack Decrypted PS4 PUP Images
• PS4 PUP Unpacker Platform-Independent Rewrite
• Fully Decrypted PS4 PUP File Examination
• PS4_Dec_PUP_Info.py Script for PS4 Decrypted PUP Info

Removing or Zerofilling Watermarks from PS4 PUPs

How to remove (zerofill) watermarks from any PUP, retail, dev, or test PS4.

Requirements:

• Bls unpacking tool (or pup unpacking tool) from skfu or my repo
• HxD or any other Hexeditor
• Calculator

Credits to Anonymous for the findings.

 

[tungatung]

So it is able to unpack PS4 retail PUP(s) does this mean that it has the key (samu ?), as then only this is possible.

What does removing watermark do ?

 

[brinza]

What does removing watermark do ? - would be nice to know indeed...

 

[nikeymikey]

@brinza Agreed, would be useful to know if this has any uses for the average end user.

 

[PSXHAX]

One reason for removing watermarks would be if an insider wanted to leak a DevKit / TestKit file like a .PUP to scene devs, but didn't want to risk losing their job if it was traced back to their developer studio.

 

[pi1st]

Cool info

 

[Pavanelli]

Thanks!!!

 

[jjbot20011]

Thank you very much