Editing Patch data.pkg

It seems follow same .spkg_hdr.1 file scheme: [[Spkg_hdr.tar|Spkg_hdr.tar, Signed Firmware Package headers]]

{| class="wikitable"
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! patch_data.pkg
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| <pre>
Offset(h) 00 01 02 03 04 05 06 07  08 09 0A 0B 0C 0D 0E 0F

00000000  53 43 45 00 00 00 00 02  00 00 00 03 00 00 00 00  |SCE.............|
00000010  00 00 00 00 00 00 02 80  00 00 00 00 00 00 d5 24  |...............$|
00000020 - 0000027F  Signed Header data

00000280  00 00 00 03 00 00 00 03  00 00 00 00 00 00 00 00  |................| unknown, a new header?
00000290  20 14 06 19 01 16 08 00  00 00 00 00 00 00 d4 a4  | ...............| release date 20 14 06 19
000002a0  00 00 00 00 00 00 1a 5a  00 00 00 00 00 00 00 00  |.......Z........|
000002b0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
000002c0  00 00 00 00 00 00 00 03  00 00 00 00 00 00 00 40  |...............@|
000002d0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 d4 a4  |................|
000002e0  00 00 00 00 00 00 00 01  00 00 00 00 00 00 00 01  |................|
000002f0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|

00000300  d7 58 49 9b 39 3f 11 47  6a 26 1e eb 1f 01 dd 92  |.XI.9?.Gj&......| here data restart
</pre>
|-
|}

==== structure ====
{|class="wikitable"
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! Address !! Length !! Value !! Description
|-
| 0x0 || 0x4 || 0x53434500 / ASCII:SCE. || Magic Header
|-
| 0x4 || 0x4 || 0x2 || Version
|-
| 0x8 || 0x2 || 0x0 || SDK type?
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| 0x8 || 0x4 || 0x3 || SCE header type; pkg
|-
| 0xC || 0x4 || 0x0 || Meta offset
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| 0x10 || 0x8 || 0x280 || Size of sce_shdr + sizeof meta_shdr
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| 0x18 || 0x8 || 0x1E0110 || content_size_real
|-
|}