"Sign" PSP ISO's to run on Unmodified PSVita Firmware.
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Bluzume cdb7b7e3f1
2 years ago
CHOVY-GEN Sign-Nplessness! almost works ! 2 years ago
CHOVY-KIRK no message 2 years ago
CHOVY-SIGN Add stuff 2 years ago
packages Finish POPS Gui, and include https://github.com/RupertAvery/PSXPackager 2 years ago
CHOVY-SIGN.sln Update files more... 2 years ago
LICENSE Update LICENSE 2 years ago
README.md Update README.md 2 years ago


#ChovyProject Created by the CBPS Team! https://discord.gg/2nDCbxJ

  • chovy-sign is an application to allow you to convert PSP ISO's to be playable on unmodified PSVita's

Setups: You need a "base" psp game, petz saddle club, locoroco midnight carnival, or ape quest starter pack all work some games dont work properly (where working on it). just try another if this happens.

as well as "the clone issue" basically games made with this are "clones" of the original "base game" so if u delete any of them it acturlaly deletes the license.rif which breaks all the other "clones", this can be fixed by re-downloading the base game off of the PSN or copying any "clone" over to your psvita again.

create playable PSP ISO bubbles on your PSVita

had to go public early due to qwikrazor.. thank him later..

PSP PIRACY on 3.73
(though, WE DONT CONDONE PIRACY plz ONLY use it for games u acturaly own the UMD for) its purely for BACKUPS xD also, lots of shittily dumped iso's online, however iso's obtained by the NPS Browser should work fine. if you want to dump your own ISO's use UMD Dumper or something that isnt ftp-ing over all the files and building it into an ISO with UMDgen or some other tool

dots-tb (for chovy-gen (__sce_ebootpbp signing)

SilicaAndPina: DLL fork of chovy-gen
Developing GUI, finding the psp bubbles method and psvimgtools .NET port and
Sfo.NET A Simple SFO Parser.

Motoharu (For helping dots with __sce_ebootpbp)

xXxTheDarkprogramerxXx (For PSPTools)

RupertAvery (For PSXPackager and his fork of DiscUtils)

Dark_Alex (For POPStation)

swarzesherz (For sign_np)

tpunix (For kirk_engine)

yifanlu & xyz for psvimgtools. (Chovy-Sign beta02 and lower)

Mathieulh (Found psp signing keys?)

MobyGames (mobygames.com for PS1 Cover Art)

What are the files

  • CHOVY-GEN is a fork of dots_tb's chovy-gen to MSVC as a DLL
  • CHOVY-KIRK parts of kirk_engine and sign_np code. ported to MSVC as a DLL.
  • CHOVY-SIGN Main GUI code, also statically includes some code from PSXPackager for POPS. It also handles .psvimg / psvmd creation, CMA Key derivation and SFO Parsing (edited Sfo.NET It also contains a fork of DiscUtils to add support for reading PS1 Disc Images.


In order to build CHOVY-SIGN.DLL you need OpenSSL libary
Extract to C:/OpenSSL or change linking settings in the solution to match your install location
Open the SLN in Viual Studio 2019 and press "Build Solution"