Editing VTRM

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On the PS4 a Dev/Test units only have one Region whilst a Retail unit has two Regions. One of those regions is used for deactivation and the other one for activation.
On the PS4 a Dev/Test units only have one Region whilst a Retail unit has two Regions. One of those regions is used for deactivation and the other one for activation.
Region0 and Region1 Digest (or signature, whatever) is for every console on every System Software version the same. And "Per Console" does not match at all because it is per Region for a Retail. In case only DevKit / TestKit consoles do use one Region (Region0) you could call it there "Per Console", still it is "Per Region".


=== Region0 ===
=== Region0 ===
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'''C'''
'''C'''
<syntaxhighlight lang="c">
<source lang="c">
  typedef struct vtrmHeader {
  typedef struct vtrmHeader {
     unsigned char FLAG;
     unsigned char FLAG;
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     unsigned const char PADDING5;
     unsigned const char PADDING5;
  } vtrmHeader;
  } vtrmHeader;
</syntaxhighlight>
</source>


'''CSharp'''
'''CSharp'''
<syntaxhighlight lang="csharp">
<source lang="csharp">
  protected internal struct vtrmHeader {
  protected internal struct vtrmHeader {
     internal static byte[] FLAG = new byte[4];
     internal static byte[] FLAG = new byte[4];
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     internal static byte[] PADDING5 = new byte[7];
     internal static byte[] PADDING5 = new byte[7];
  }
  }
</syntaxhighlight>
</source>


==== Body ====
==== Body ====


== API ==
== Function Calls ==


=== 1.76 ===
From 1.76. [http://pastebin.com/gWg1JeA8 pastebin]
 
* Source: [http://pastebin.com/gWg1JeA8 PS4 1.76 kernel symbols pastebin]


<pre>
<pre>
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VtrmUtilCountAllocatedEntry          LOAD FFFFFFFF827CF840 0000003F                  R . . . . . .
VtrmUtilCountAllocatedEntry          LOAD FFFFFFFF827CF840 0000003F                  R . . . . . .
</pre>
</pre>
VTRM is accessed by the sceSblVtrm* kernel functions with SceShellCore's authority-id (0x3800000000000010):
* <code>sceSblVtrmStoreNth(paid, pData, size, sector_id)</code> to write
* <code>sceSblVtrmRetrieveNth(paid, pData, size, sector_id)</code> to read
* <code>sceSblVtrmFreeNth(paid, sector_id)</code> to erase
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