Communication Processor Update Package
Updates to the communication processor are stored within a special CPUP package contained within Development kit (DEM or PDEL) PUP files. In firmware .940 and .945 (and their subsets) exclusively, the CPUP are embedded within encrypted Update packages.
Each CPUP shares a common header.
| Offset | Size | Description |
|---|---|---|
| 0x0 | 0x4 | MAGIC (CpUp in Little Endian) |
| 0x4 | 0x4 | Version (in Little Endian) |
| 0x13 | 0x1 | Unknown, always 0x01 |
| 0x14 | 0x4 | Full CPUP Size (in Little Endian) |
| 0x18 | 0x1 | Unknown, always 0x20 |
| 0x1C | 0x4 | Extracted/Decrypted CPUP size (in Little Endian) |
Every CP updates below version 1000 (found in firmware 1.00) are divided in 2 parts (2 separate CPUP files set to the same version value), every version after version 1000 is only comprised of a single part.
The communication processor is updated through the use of the SceDeci4pCpup module.
Here are the different CP versions identified as of today:
| CPUP Header | Version | Firmware |
|---|---|---|
| 00060004 | 0604 | 0.902 |
| 00080508 | 0858 | 0.931 |
| 00090100 | 0910 | 0.940 |
| 00090203 | 0923 | 0.945 |
| 00090501 | 0951 | 0.990 |
| 00090600 | 0960 | 0.995.000 |
| 00090700 | 0970 | 0.995.070 |
| 00090708 | 0978 | 0.996 |
| 01000000 | 1000 | 1.000 |
| 01000001 | 1001 | 1.030 |
| 01000002 | 1002 | 1.040 |
| 01000106 | 1016 | 1.500 |
| 01000300 | 1030 | 1.600 |
| 01000800 | 1080 | 1.800 |
| 01010000 | 1100 | 2.000 |
| 01010702 | 1172 | 2.120 |
| 01010904 | 1194 | 2.500 |
| 01020001 | 1201 | 3.000 |
| 01030001 | 1301 | 3.100 |
The Kernel Boot Loader outputs the current CP version in the console, this follows the below standard:
Board.id ver.version
for example "bid.4 ver.1301" stands for board id 4 CP version 1301 DEM-3000H uses the CP board id 3 PDEL-1001 uses the CP board id 4
Note: The Communication Processor on PS Vita Development units is not downgradable within normal operations (even when downgrading the unit itself using a PUP).