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PUP (Playstation Update Package) is the file format of the PSP, PS3, PSVita, PS4, and PS5 system software update packages. It contains updated firmware and files for devices such as the GameOS, Syscon, Wi-Fi, Bluetooth, Communication Processor, Southbridge, Bluray Drive, and more.
PUP (Playstation Update Package) is the file format of the PSP, PS3, PSVita and PS4 system software update packages.


== PUP Structure ==
PUP embed updates for devices such as the GameOS, Syscon, Wi-Fi, Bluetooth, Communication Processor, Southbridge, BD drive.


PS4 update files differ from previous PlayStation consoles in that they embed multiple PUP fragments. The "main" file that is distributed and downloaded to the PS4 console is a SLB2-packed (or "BLS") file which contains PUP fragment files. On retail and TestKit, it typically contains two PUPs (`PS4UPDATE1.PUP` and `PS4UPDATE2.PUP`), while DevKit may have four. These PS4 PUP files are similar in structure to PS4 Signed ELFs (SELFs). Each PUP fragment is responsible for containing different sets of files.
== Structure ==


* PS4UPDATE1 is the "core" update file and contains updates for GameOS/x86 kernel and usermode, Bluray Drive, EAP, EMC, Syscon, SAM, and other firmware stored on the SPI flash.
PS4 PUP is special because it embeds single other PUPs.
* PS4UPDATE2 contains the `system_ex` partition of system applications.
* PS4UPDATE3 (DevKit only) contains the preinstall image for DevKit.
* PS4UPDATE4 (DevKit only) contains a seemingly empty preinstall part 2 image for DevKit (maybe reserved?).


All PUP fragments contain the end-user license agreement, the Orbis Software Updater (orbis_swu), and a watermark.
=== Header ===


=== File Header ===
Have a feeling the header for the new PS4 PUPs ends with a LZMA dictionary and file size… (ie a normal lzma header without the properties byte) anyone else done research into that? As in:
 
The file header for the main PUP file is an SLB2 file. Each PUP fragment packed into it has the following header (note: after the initial 0x10 bytes, the remaining 0x10 bytes are encrypted along with the metadata that follows it).


<source lang="c">
<source lang="c">
struct ScePupHeader {
struct PUPPS4Header {
uint32_t magic;                 // 0x00 - PS4PUPMAGIC "\x4F\x15\x3D\x1D"
uint32_t magic; // PS4PUPMAGIC "\x4F\x15\x3D\x1D"
uint16_t version;               // 0x04 - Big Endian (??)
uint16_t version; // Big Endian (??)
uint16_t unknown_one;          // 0x06
uint16_t unknownOne;
uint16_t unknown_two;          // 0x08
uint16_t unknownTwo;
uint16_t flags;                // 0x0A
uint16_t unknownThree;
uint16_t header_size;          // 0x0C
uint32_t dictSize; // LE afaics
uint16_t metadata_size;        // 0x0E
uint32_t uncompressedSize; // LE afaics
 
// From this point on, the header is encrypted...
uint16_t file_size;             // 0x10
uint16_t segment_count;         // 0x18
uint16_t metadata_entries;     // 0x1A
uint32_t unknown_three;         // 0x1C
}; // Size: 0x20
</source>
 
=== Segments ===
 
From this point on, the remaining structures are encrypted in raw update files (though this section can be seen by using the system as an oracle to decrypt PUPs). Following the header is the segment table, which has segment entries that contain information about update entries (a list of which can be found in the "Indices" section).
 
<source lang="c">
struct ScePupSegmentHeader {
uint64_t flags;                // 0x00
uint64_t offset;                // 0x08
uint64_t compressed_size;      // 0x10
uint64_t uncompressed_size;    // 0x18
}; // Size: 0x20
</source>
 
While offset, compressed_size, and uncompressed_size fields are self-explanatory, the flags field packs a lot of information. Below are known flags:
 
<source lang="c">
#define PUP_SEGMENT_ID(x)                  (x->flags >> 20)
#define PUP_SEGMENT_IS_INFO(x)              ((x->flags & (1 << 0)) != 0)
#define PUP_SEGMENT_IS_ENCRYPTED(x)        ((x->flags & (1 << 1)) != 0)
#define PUP_SEGMENT_IS_SIGNED(x)            ((x->flags & (1 << 2)) != 0)
#define PUP_SEGMENT_IS_COMPRESSED(x)        ((x->flags & (1 << 3)) != 0)
#define PUP_SEGMENT_HAS_BLOCKS(x)          ((x->flags & (1 << 11)) != 0)
#define PUP_SEGMENT_HAS_DIGESTS(x)          ((x->flags & (1 << 16)) != 0)
#define PUP_SEGMENT_BLOCK_SIZE(x)          (1 << (((x->flags >> 12) & 0xF) + PAGE_SHIFT)) // Note: PAGE_SHIFT = 0xC
</source>
 
In most cases (ie. "data" segments as opposed to info segments), the segment ID indicates the type of firmware or file to update (see [[#Indices]] table). In the case of info segments, the segment ID points to the index of the "data" segment it contains information for. Info segments are typically only seen when the file or firmware utilizes block-based segments.
 
=== PUP Info ===
 
After the segment table is a section that has additional information on the PUP, such as its target firmware and various flags.
 
<source lang="c">
struct ScePupInfo {
uint32_t fw_ver;                // 0x00 - Firmware version in integer format (ie. FW 9.50 is 0x95080000000)
char unknown_one[0x14];        // 0x04
uint32_t type;                  // 0x18 - Beta/Retail/Testkit/Devkit/Proto
char unknown_two[0x4];          // 0x1C
uint32_t flags;                // 0x20
uint32_t req_fw_ver;            // 0x24
char unknown_three[0x8];       // 0x28
}
}
</source>
</source>
=== Metadata ===
Following the info structure is the metadata table. These entries contain crypto material such as intermediate keys for decrypting and verifying segments. Each segment should have a metadata table entry.
<source lang="c">
struct ScePupMetadataEntry {
char aes128_key[0x10];          // 0x00 - AES128 data decryption key
char aes128_iv[0x10];          // 0x10 - AES128 data decryption initialization vector
char digest[0x20];              // 0x20 - SHA256 digest
char digest_key[0x10];          // 0x40 - SHA256 digest HMAC key
}; // Size: 0x50
</source>
=== Unpacking Notes ===
* Encryption is applied on segments post-compression.
* Non-blocked segments are a straight copy or decompression operation.
* Processing blocked segments requires looking up the accompanying info segments and parsing the block tables within them.
* Large disk images and most SLB2/BLS files will be block-based.


== Tools ==
== Tools ==
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=== Decrypter (first step) ===
=== Decrypter (first step) ===


* [https://github.com/zecoxao/ps5-pup-decrypt PS5 PUP decryptor based on the one for PS4 (2022-10-14 to 2024-05-25)]
* [https://github.com/idc/ps4-pup_decrypt ps4-pup_decrypt by idc]
* [https://github.com/EchoStretch/ps4-pup-decrypt PS4 PUP decryptor based on idc's by EchoStretch (2024-06-07)]
* [https://github.com/andy-man/ps4-pup-decrypt PS4 PUP decryptor based on idc's by andy-man (2024-04-07)]
* [https://github.com/Creeeeger/PS4-dec PS4 PUP decryptor based on idc's by Creeger (2024-02-20)]
* [https://github.com/SocraticBliss/ps4-pup_decrypt PS4 PUP decryptor based on idc's by SocraticBliss and l0lhax (2019-05-28)]
* [https://github.com/idc/ps4-pup_decrypt ps4-pup_decrypt by idc (2016-06-05 to 2017-11-24)]


=== Unpacker (second step) ===
=== Unpacker (second step) ===


* [https://github.com/seregonwar/PFU-PupFileUnpacker PupFileUnpacker by seregonwar (2023-04-08 to 2024-09-30)] (based on ps4_dec_pup_info by SocraticBliss)
* [https://github.com/idc/ps4-pup_unpack ps4-pup-unpack by idc]
* [https://github.com/SocraticBliss/ps4_dec_pup_info ps4_dec_pup_info by SocraticBliss (2020-09-23)]
* [https://github.com/Zer0xFF/ps4-pup-unpacker ps4-pup-unpacker by Zer0xFF] (based on ps4-pup-unpack by idc)
* [https://github.com/Zer0xFF/ps4-pup-unpacker ps4-pup-unpacker by Zer0xFF (2017-11-24 to 2018-01-14)] (based on ps4-pup-unpack by idc)
* [https://github.com/idc/ps4-pup_unpack ps4-pup-unpack by idc (2016-06-05 to 2017-12-12)]


== Indices ==
== Indices ==
{| class="wikitable sortable"
{| class="wikitable sortable"
|-
|-
! Index !! Decimal !! Description !! Perconsole? !! Notes !! Added !! Deprecated? || Cipher Note || Component Name
! Index !! Decimal !! Description !! Perconsole? !! Notes !! Added !! Deprecated? || Cipher Note
|-
|-
| 1 || 1 || EMC IPL || {{no}} || sflash0s0x32/b Aeolia 1st Revision || [[0.910.040]] || {{yes}} , since 2.00 || Same body as 0x0D || ??
| 1 || 1 || EMC IPL || {{no}} || sflash0s0x32/b Aeolia 1st Revision || [[0.910.040]] || {{yes}} , since 2.00 || Same body as 0x0D
|-
|-
| 2 || 2 || EAP KBL || {{no}} || sflash0s0x33 Aeolia 1st Revision || [[0.910.040]] || {{yes}} , since 2.00 || Same body as 0x0E || ??
| 2 || 2 || EAP KBL || {{no}} || sflash0s0x33 Aeolia 1st Revision || [[0.910.040]] || {{yes}} , since 2.00 || Same body as 0x0E
|-
|-
| 3 || 3 || WIFI FW || {{no}} || torus2 Aeolia A2 || [[0.910.040]] || || || --
| 3 || 3 || WIFI FW || {{no}} || torus2 || [[0.910.040]] || ||
|-
|-
| 4 || 4 || SECURE LOADER || {{yes}} || sflash0s1.cryptx2/b 1st SOCUID || [[0.910.040]] || || (Confirmed by anon) Same body as 0x23 || [[CXD90026G]]
| 4 || 4 || SAM IPL || {{yes}} || sflash0s1.cryptx2/b 1st SOCUID || [[0.910.040]] || ||
|-
|-
| 5 || 5 || COREOS || {{no}} || secure_modules || [[0.910.040]] || || || GEN1,2,3 Universal
| 5 || 5 || COREOS || {{no}} || secure_modules || [[0.910.040]] || ||
|-
|-
| 6 || 6 || SYSTEM || {{no}} || system fs (FAT32/TEXFAT later)  || [[0.910.040]] || || || GEN1,2,3 Universal
| 6 || 6 || SYSTEM || {{no}} || system fs (FAT32/TEXFAT later)  || [[0.910.040]] || ||
|-
|-
| 7 || 7 || EAP KERNEL || {{no}} || da0x2 || [[0.910.040]] || || || GEN1,2,3 Universal
| 7 || 7 || EAP KERNEL || {{no}} || da0x2 || [[0.910.040]] || ||
|-
|-
| 8 || 8 || EAP VSH || {{no}} || eap_vsh fs (FAT16) || [[0.910.040]] || || || GEN1,2,3 Universal
| 8 || 8 || EAP VSH || {{no}} || eap_vsh fs (FAT16) || [[0.910.040]] || ||
|-
|-
| 9 || 9 || PREINST || {{no}} || preinst fs (FAT32) || [[0.910.040]] || || || GEN1,2,3 Universal
| 9 || 9 || PREINST || {{no}} || preinst fs (FAT32) || [[0.910.040]] || ||
|-
|-
| 0xA || 10 || ??? || {{no}} || sflash0s1.cryptx40 || {{no}} || || || ??
| 0xA || 10 || ??? || {{no}} || sflash0s1.cryptx40 || {{no}} || ||
|-
|-
| 0xB || 11 || PREINST2 || {{no}} ||  preinst2 fs (FAT32) || [[0.910.040]] || || || GEN1,2,3 Universal
| 0xB || 11 || PREINST2 || {{no}} ||  preinst2 fs (FAT32) || [[0.910.040]] || ||
|-
|-
| 0xC || 12 || SYSTEM_EX || {{no}} || system_ex fs (FAT32/TEXFAT later) || [[0.910.040]] || || || GEN1,2,3 Universal
| 0xC || 12 || SYSTEM_EX || {{no}} || system_ex fs (FAT32/TEXFAT later) || [[0.910.040]] || ||
|-
|-
| 0xD || 13 || EMC IPL || {{no}} || sflash0s0x32/b Aeolia A2 || [[0.910.040]] || || Same body as 0x1 || [[CXD90025G]]
| 0xD || 13 || EMC IPL || {{no}} || sflash0s0x32/b Aeolia 2nd Revision || [[0.910.040]] || || Same body as 0x1
|-
|-
| 0xE || 14 || EAP KBL || {{no}} || sflash0s0x33 Aeolia A2 || [[0.910.040]] || || Same body as 0x2 || [[CXD90025G]]
| 0xE || 14 || EAP KBL || {{no}} || sflash0s0x33 Aeolia 2nd Revision || [[0.910.040]] || || Same body as 0x2
|-
|-
| 0xF || 15 || ??? || {{no}} || test || {{no}} || || || ??
| 0xF || 15 || ??? || {{no}} || test || {{no}} || ||
|-
|-
| 0x10-0x16 || 16-22 || ??? || {{no}} || sbram0 || {{no}} || || || ??
| 0x10-0x16 || 16-22 || ??? || {{no}} || sbram0 || {{no}} || ||
|-
|-
| 0x20 || 32 || EMC IPL || {{no}} || sflash0s0x32/b Belize 1st Revision || 2.00 || || Same body as 0x2A || [[CXD90036G]]
| 0x20 || 32 || EMC IPL || {{no}} || sflash0s0x32/b Belize 1st Revision || 2.00 || || Same body as 0x2A
|-
|-
| 0x21 || 33 || EAP KBL || {{no}} || sflash0s0x33 Belize 1st Revision || 2.00 || ||  Same body as 0x2B and 0x25 || [[CXD90036G]]
| 0x21 || 33 || EAP KBL || {{no}} || sflash0s0x33 Belize 1st Revision || 2.00 || ||  Same body as 0x2B and 0x25
|-
|-
| 0x22 || 34 || WIFI FW || {{no}} || torus2 || 2.00 || || || ??
| 0x22 || 34 || WIFI FW || {{no}} || torus2 || 2.00 || ||
|-
|-
| 0x23 || 35 || SECURE LOADER || {{yes}} || sflash0s1.cryptx2/b 2nd SOCUID || 2.00 || || (Confirmed by anon) Same body as 0x04 || [[CXD90026AG]]
| 0x23 || 35 || SAM IPL || {{yes}} || sflash0s1.cryptx2/b 2nd SOCUID || 2.00 || ||
|-
|-
| 0x24 || 36 || EMC IPL || {{no}} || sflash0s0x32/b Baikal B1 || 3.00 || || || [[CXD90046GG]]
| 0x24 || 36 || EMC IPL || {{no}} || sflash0s0x32/b Belize 2nd Revision? || 3.00 || ||
|-
|-
| 0x25 || 37 || EAP KBL || {{no}} || sflash0s0x33 Baikal B1 || 3.00 || || Same body as 0x2B and 0x21 || [[CXD90046GG]]
| 0x25 || 37 || EAP KBL || {{no}} || sflash0s0x33 Belize 2nd Revision? || 3.00 || || Same body as 0x2B and 0x21
|-
|-
| 0x26 || 38 || SECURE LOADER || {{yes}} || sflash0s1.cryptx2/b 3rd SOCUID || 3.00 || || (Confirmed by anon) Same body as 0x2D and 0x32 || [[CXD90037G]]
| 0x26 || 38 || SAM IPL || {{yes}} || sflash0s1.cryptx2/b 3rd SOCUID || 3.00 || ||
|-
|-
| 0x27 || 39 || SECURE LOADER || {{yes}} || sflash0s1.cryptx2/b 4th SOCUID || 3.00 || || (Confirmed by anon) Same body as 0x31 || [[CXD90043GB]]
| 0x27 || 39 || SAM IPL || {{yes}} || sflash0s1.cryptx2/b 4th SOCUID || 3.00 || ||
|-
|-
| 0x28 || 40 || EMC IPL || {{no}} || sflash0s0x32/b Baikal 1st Revision || 3.00 || || Same body as 0x2C ||
| 0x28 || 40 || EMC IPL || {{no}} || sflash0s0x32/b Baikal 1st Revision || 3.00 || || Same body as 0x2C
|-
|-
| 0x2A || 42 || EMC IPL || {{no}} || sflash0s0x32/b Belize 2 A0 || 4.00 ||  || Same body as 0x20 ||
| 0x2A || 42 || EMC IPL || {{no}} || sflash0s0x32/b Belize 2 1st Revision || 4.00 ||  || Same body as 0x20
|-
|-
| 0x2B || 43 || EAP KBL || {{no}} || sflash0s0x33 Belize 2 A0 || 4.00 || || Same body as 0x25 and 0x21 ||
| 0x2B || 43 || EAP KBL || {{no}} || sflash0s0x33 Belize 2 1st Revision || 4.00 || || Same body as 0x25 and 0x21
|-
|-
| 0x2C || 44 || EMC IPL || {{no}} || sflash0s0x32/b Baikal2 1st Revision  || 4.00 || || Same body as 0x28 ||
| 0x2C || 44 || EMC IPL || {{no}} || sflash0s0x32/b Baikal2 1st Revision  || 4.00 || || Same body as 0x28
|-
|-
| 0x2D || 45 || SECURE LOADER || {{yes}} || sflash0s1.cryptx2/b 5th SOCUID || 4.50 || || (Confirmed by anon) Same body as 0x26 and 0x32 || [[CXD90044GB]]
| 0x2D || 45 || SAM IPL || {{yes}} || sflash0s1.cryptx2/b 5th SOCUID || 4.50 || ||
|-
|-
| 0x2E || 46 || EMC IPL || {{no}} || sflash0s0x32/b Belize2 3rd Revision?  || 5.00 || || ||
| 0x2E || 46 || EMC IPL || {{no}} || sflash0s0x32/b Belize2 3rd Revision?  || 5.00 || ||
|-
|-
| 0x30 || 48 || WIFI FW || {{no}} || sflash0s0x38 trooper Belize 2 A0 || 5.00 || || || --
| 0x30 || 48 || WIFI FW || {{no}} || sflash0s0x38 trooper || 5.00 || ||
|-
|-
| 0x31 || 49 || SECURE LOADER || {{yes}} || sflash0s1.cryptx2/b 6th SOCUID || 5.50 || || (Confirmed by anon) Same body as 0x27 || [[CXD90051GB]]
| 0x31 || 49 || SAM IPL || {{yes}} || sflash0s1.cryptx2/b 6th SOCUID || 5.50 || ||
|-
|-
| 0x32 || 50 || SECURE LOADER || {{yes}} || sflash0s1.cryptx2/b 7th SOCUID || 6.50 || || (Confirmed by anon) Same body as 0x26 and 0x2D || [[CXD90055GB]]
| 0x32 || 50 || SAM IPL || {{yes}} || sflash0s1.cryptx2/b 7th SOCUID || 6.50 || ||
|-
|-
| 0x101 || 257 || EULA.XML || {{no}} || Sony Agreement XML || 1.00 ||  || || Universal
| 0x101 || 257 || EULA.XML || {{no}} || Sony Agreement XML || 1.00 ||  ||
|-
|-
| 0x200 || 512 || ORBIS_SWU.SELF || {{no}} || Sony SoftWareUpdater (ELF) || [[0.910.040]] || || || Universal
| 0x200 || 512 || ORBIS_SWU.SELF || {{no}} || Sony SoftWareUpdater (ELF) || [[0.910.040]] || ||
|-
|-
| 0x202 || 514 || ORBIS_SWU.SELF || {{no}} || Sony SoftWareUpdater (Encrypted SELF) || [[0.920.030]] || || || Universal
| 0x202 || 514 || ORBIS_SWU.SELF || {{no}} || Sony SoftWareUpdater (Encrypted SELF) || [[0.920.030]] || ||
|-
|-
| 0x301 || 769 || ??? || {{no}} || /update related || {{no}} || || || ??
| 0x301 || 769 || ??? || {{no}} || /update related || {{no}} || ||
|-
|-
| 0x302 || 770 || ??? || {{no}} || /update related || {{no}} || || || ??
| 0x302 || 770 || ??? || {{no}} || /update related || {{no}} || ||
|-
|-
| 0xD00 || 3328 || SYSCON FW || {{no}} || sc_fw_update0 firmware (4000XXXX)  || [[0.915.010]] || || || Universal Syscon
| 0xD00 || 3328 || SYSCON FW || {{no}} || sc_fw_update0 firmware (4000XXXX)  || [[0.915.010]] || ||
|-
|-
| 0xD01 || 3329 || BLURAY DRIVE FW || {{no}} || Bluray drive firmware (all revisions) (4XXR) || [[0.920.030]] || || || Universal Bluray Drive
| 0xD01 || 3329 || BLURAY FW || {{no}} || bluray firmware (all revisions) (4XXR) || [[0.920.030]] || ||
|-
|-
| 0xD02 || 3330 || USB SATA BRIDGE FW || {{no}} || USB SATA bridge firmware (da0) || 1.00 || || || [[MB86C311B]]
| 0xD02 || 3330 || USB SATA BRIDGE FW || {{no}} || usb sata bridge firmware (da0) || 1.00 || ||
|-
|-
| 0xD07 || 3335 || SYSCON PATCH || {{no}} || sc_fw_update0 patch (4001XXXX)  || 2.50 Test/Retail || || || Universal Syscon
| 0xD07 || 3335 || SYSCON PATCH || {{no}} || sc_fw_update0 patch (4001XXXX)  || 2.50 Test/Retail || ||
|-
|-
| 0xD08 || 3336 || SYSCON FW || {{no}} || sc_fw_update0 firmware (4000XXXX)  || 1.00 Devkit || || || Universal Syscon
| 0xD08 || 3336 || SYSCON FW || {{no}} || sc_fw_update0 firmware (4000XXXX)  || 1.00 Devkit || ||
|-
|-
| 0xD09 || 3337 || COMMUNICATION PROCESSOR FW || {{no}} || cpfirm || 3.50 Devkit || || || Neo DevKit Component (unknown)
| 0xD09 || 3337 || COMMUNICATION PROCESSOR FW || {{no}} || cpfirm || 3.50 Devkit || ||
|-
|-
|}
|}
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