Editing Playstation Update Package (PUP)

[[Category:Software]]
== Extraction ==
The PS VITA update files can be extracted using the "[http://www.vitadevwiki.com/index.php?title=Tools PS VITA Firmware xTractor]".

== Decryption ==
To decrypt the files which are unpacked using the tool, the key is available under PS Vita Keys

== Structure ==
It is not complete but here you can see the basic structure:

[[File:Offsets.png]]
(There is something wrong in that image.. deroad)

{| class="wikitable"
|-
! Offset 
! Length 
! Type 
! Information
|-
| 0x0 
| 0x8 
|
| Magic
|-
| 0x6 
| 0x2
| 
| Package Version
|-
| 0x08 
| 0x2 
|
| Image Version
|-
| 0x18
| 0x8
|
| File Count
|-
| 0x10
| 0x8 
| ?? 
| UNKNOWN
|-
| 0x20
| 0x8 
| 
| Header Length
|-
| 0x28
| 0x8
|
| File Length
|}

== Regioning ==
If simular to PS3, then there is no regioning in the .PUP files, they are the same for all different regions.<br />
The PS Vita however gets the psp2-updatelist.xml from different servers, depening on the region of that model.

Retail:
* [http://fjp01.psp2.update.playstation.net/update/psp2/list/jp/psp2-updatelist.xml Japan (jp)]
* [http://fus01.psp2.update.playstation.net/update/psp2/list/us/psp2-updatelist.xml USA (us)]
* [http://feu01.psp2.update.playstation.net/update/psp2/list/eu/psp2-updatelist.xml Europe (eu)]
<pre>
<update_data_list>
  <region id="jp">
    <np level0_system_version="01.500.000" level1_system_version="01.500.000" level2_system_version="01.500.000"/>
    <version system_version="01.500.000" label="01.500">
      <update_data update_type="full">
        <image size="94496256">
          http://djp01.psp2.update.playstation.net/update/psp2/image/2011_1214/rel_f090a69bcf392b5c311b9e786c5cc0b5/PSP2UPDAT.PUP?dest=jp
        </image>
      </update_data>
    </version>
    <recovery spkg_type="systemdata">
      <image spkg_version="01.000.010" size="56817152">
        http://djp01.psp2.update.playstation.net/update/psp2/image/2011_1214/sd_484243f3964158b38ad1adaac0332a3e/PSP2UPDAT.PUP?dest=jp
      </image>
    </recovery>
    <recovery spkg_type="preinst">
      <image spkg_version="01.000.000" size="128837120">
        http://djp01.psp2.update.playstation.net/update/psp2/image/2011_1214/pre_24b5601c3b3aa63b51cf5eaeab718a4c/PSP2UPDAT.PUP?dest=jp
      </image>
    </recovery>
  </region>
</update_data_list>
</pre>

Shop:
* [http://fjp01.psp2.update.playstation.net/update/psp2/list/shop/psp2-updatelist.xml Japan (jp)]
* [http://fus01.psp2.update.playstation.net/update/psp2/list/shop/psp2-updatelist.xml USA (us)]
* [http://feu01.psp2.update.playstation.net/update/psp2/list/shop/psp2-updatelist.xml Europe (eu)]
<pre>
<update_data_list>
  <region id="shop">
    <np level0_system_version="00.000.000" level1_system_version="00.000.000" level2_system_version="00.000.000"/>
    <version system_version="00.000.000">
      <update_data update_type="full">
        <image>NA</image>
      </update_data>
    </version>
  </region>
</update_data_list>
</pre>

Retail basic structure of the update URL:
<pre>http://d<TLD>01.psp2.update.playstation.net/update/psp2/image/<YYYY_MMDD>/pre_<md5>/PSP2UPDAT.PUP?dest=<TLD>
(TLD=2 letter abbreviation from above region, YYYY_MMDD is release date, md5 is 22-digits long HASH)</pre>

== Revisions ==

=== 1.03 ===
SKU Release version in Japan

=== 1.50 ===
Update released online together with Japanese launch

[http://www.multiupload.com/18TJMHBSQU 01.500.000 PSP2UPDAT.PUP's (266.73 MB)]


==PUP Files==

{| class="wikitable"
|-
! Information
! From Offset 
! To Offset 
! Length 
|-
| LICENCE
| 0xA00 
| 0x713DF
| 0x709E0
|-
| -
| -
| -
| -
|-
| -
| -
| -
| -
|-
| -
| -
| -
| -
|-
|}