From wololo's blog: Important update: it seems for the EU version, you need your console to be set to English language in order for the exploit to work. I’m sure Frostegater will look into this, but in the meantime, if you use the EU version, please switch your console language to English!
Happy new year again! We eventually got convinced to not wait any longer and release the files for Frostegater’s port of Total_Noob’s CEF for Vita Firmware 2.02.
As a reminder, this tool relies on an exploit in the PSP Game UNO. You must own a legit copy of the UNO game on your PS Vita Firmware 2.02 in order for this exploit to run. CEF will let you play PSP Homebrews and PSP backups on your Vita. It does not allow you to play pirated Vita games, or PS Vita native content. To summarize, CEF does what a CFW or a HEN would do on a PSP.
Installation / How to use
Installation and how to run are explained in the readme, but for the sake of it:
1. Extract the zip, and copy the folder that matches your version of the game (EU, JP, or US) to your content Manager PSAVEDATA folder. For example: My Documents/CMA/PSAVEDATA/1234567890abcdef/NPEH00020DATA00
2. It is recommended to install OpenCMA, although until Sony releases a new firmware, the regular CMA client is ok too
3. Copy the UNO savedata to your PS Vita with the content Manager
4. Run UNO on your PS Vita, and press X (or O) to continue, this should load the exploit
Finally, here is my video tutorial for the new CFW on PS vita 2.02 and the exploit game UNO (now pulled from PSN by Sony).
It shows everything: Installing the Exploit, Installing Homebrew, Installing Backups. Have fun
Update: ARK eCFW for the UNO exploit is now released, and to quote (via wololo.net/2013/01/12/ps-vita-release-ark-ecfw-for-the-uno-exploit/):
The PRO team (the people behind the PRO Custom Firmware, probably the most popular piece of software of the PSP scene these days) are back with a huge release: a PSP CFW for the Vita, running on the recently revealed UNO exploit. Codename: ARK
If you've been using the UNO exploit, ARK is basically an alternative to Total_Noob’s CEF. At the core, ARK is a port of Pro CFW to the PS Vita, and seems to bring features that might be lacking in CEF. In particular, the Readme emphasizes the following:
PSX game support (soundless so far, our sound plugin is too glitchy for public use at the moment)
ISO/CSO game support
NoDRM Engine for decrypted dlc playback
MS-SpeedBoost (most noticable on games like soul calibur)
Stargate Game Patches (fixes several anti-cfw games)
Customizable Main Menu
ISO-cache support (speed up ISO gaming)
Some of you might remember a leak of some of Coldbird's work a few months ago, which led him to leave the scene. ARK is the project that was leaked back then (although the leak was encrypted, and therefore not usable), and that the Pro team decided to release today. I assume the decision was taken a while ago, but porting the existing work to the new firmware 2.02 might have taken some time.
Although I haven’t tried this specific build, I was lucky enough to try early builds of the ARK project a few months ago, and overall I was impressed. Coldbird left the scene while he was in the middle of bringing sound support to PS1 games, so it is unclear if the sound plugin for PS1 will ever see the light of day, but independently of that, I am pretty sure ARK brings a nice new option to those of you looking for alternatives to CEF.
Credits for the ARK project are the following (from the readme):
Dark_Alex for the initial M33 CFW who guided us mentally through several CFW generations by giving good examples on how to patch Sony OFW.
VirtuousFlame: For the ISO Loading Code, Custom PSX EBOOT Support, PSPCipher and most of the CFW related code.
Coldbird: For Proshell, and all his CFW related code & Vita redesign of PROCFW.
Yosh: For the initial sceWlanGetEtherAddr leaked kxploit, yMenu, other kxploit related things and various pieces of code.
thecobra & frostegater: For precisions about this kxploit.
neur0n for his syscall execution in kernel mode, several bug fixes and other CFW related code.
ardi for his umd4homebrew to enable UMD in homebrews.
Zer01ne for the initial Uno exploit discovery.
All our testers.
And last but not least – Sony for making wonderful, however very locked down, portable gaming handhelds.
In order to install, just unzip the savedata matching your region to your CMA folder, and install the savedata using CMA, like you would install any other PSP savedata to your vita (more details in the readme). If you’re on Windows, we recommend to use OpenCMA when you copy files to and from your vita.
To run ARK, once you've installed the Savedata to your Vita, just run UNO, and press “X” when asked to do so by the game, this should load the eCFW menu.
Coldbird's FTP for Vita is also a recommended tool to install once you’re all set, to make copying backups and homebrews easier.
As I said, I haven’t tested this build yet, so give the files a try, and post your comments here. In particular, I'm sure we’d all like to know how it compares to CEF
Important note: This release requires that you are running on a PS Vita with firmware 2.02 or lower. It also requires you to have a legit copy of the PSP game UNO installed on your Vita. UNO has been removed from the PSN by Sony a few days ago, so if you missed the exploit announcement and don’t have the game on your Vita, you’re out of luck, this release will not help you in that case.
Those of you enjoying CEF on the 2.02 Uno exploit will be happy to learn that the source code for both Frostegater's port of CEF, and the kxploit he used on top of the uno exploit are now available (linked above).
Update #2: According to joblabbo, Uno is back on PSN usa store and can be used again with the save exploit. To quote: "I manually upgraded from 1.81 to 2.02 and confirmed it still works. The PSP Game version is listed for $1."