Editing Talk:Playstation Update Package (PUP)

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= PS3 talk =
= PS3 talk =


What is the part that defines what firmware it really is? I mean, for firmwares below 3.55 we have all the keys so we can forge any .PUP and make it appear as a +3.55, that would be a way to downgrade, without the need of a dongle and recovery mode.
What is the part that defines, what firmware it really is?. I mean, for firmwares below 3.55 we have all the keys so whe can forge any PUP and make it appear as a +3.55, that would be a way to downgrade, without the need of a dongle and recovery mode.


I know there are version strings in pupheader, version.txt, info0, and in vsh.self. But what is missing? What isn´t correctly set in the MFW to make it pass the checks of a legit +3.55 FW?.
I know there are version strings in pupheader, version.txt, info0, and in vsh.self.. but what is missing? What isn´t correctly set in mfw to make it pass the checks of a legit +3.55 fw?.


We are using recovery mode to downgrade because we haven´t found a way to create a legit +3.55 firmware
We are using recovery mode to downgrade because we haven´t found a way to create a legit +3.55.


== Unpacking a PlayStation Update Package ==
== Unpacking a Playstation Update Package ==


=== Unpack the PUP ===
=== Unpack the PUP ===
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<div style="float:right">[[File:PS3 MinVerChk PUP on USB.jpg|thumb|left|PS3 MinVerChk PUP on USB]]</div>
<div style="float:right">[[File:PS3 MinVerChk PUP on USB.jpg|thumb|left|PS3 MinVerChk PUP on USB]]</div>


<span style="text-decoration: line-through;">https://web.archive.org/web/*/http://ps3devwiki.com/files/firmware/MFW-CEX/MinVerCheck/</span>  // <span style="text-decoration: line-through;">[http://www.mirrorcreator.com/files/KMIA5YMJ/MinVerCheck.rar_links MinVerChk.rar (1.28 KB)]</span> / <span style="text-decoration: line-through;">[http://www.sendspace.com/file/l2fixi mirror]</span> --- [https://mega.nz/#!FUVm1C7a!IbCyN_uzCQh7hZb7eu3pRrwBuezLh1r4Ha7eeB9RlZk mirror 2]
<span style="text-decoration: line-through;">http://ps3devwiki.com/files/firmware/MFW-CEX/MinVerCheck/</span>  // <span style="text-decoration: line-through;">[http://www.mirrorcreator.com/files/KMIA5YMJ/MinVerCheck.rar_links MinVerChk.rar (1.28 KB)]</span> / <span style="text-decoration: line-through;">[http://www.sendspace.com/file/l2fixi mirror]</span> --- [https://mega.nz/#!FUVm1C7a!IbCyN_uzCQh7hZb7eu3pRrwBuezLh1r4Ha7eeB9RlZk mirror 2]
  CRC-16: 9A11
  CRC-16: 9A11
  CRC-32 (Ethernet and PKZIP): 50EE9A92
  CRC-32 (Ethernet and PKZIP): 50EE9A92
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