Les Custom Firmwares TN développés par Total_Noob étaient très populaires sur la scène PSP, car très complets en fonctionnalités et doublés d'une formidable stabilité, ont été portés il y a quelques temps sur PS Vita, pour retrouver l'interface XMB et lancer des backups de jeux PSP.
Download 660.PBP Here. (choose the PSP 1000/2000/3000 version, *not* the PSP Go version). Depending on the download links, if the file you download is named EBOOT.PBP, rename it into 660.PBP
Download TN-V4′s binary files here
Download the TN-V4 Loader for your game here. Choose the download that matches your game and region!
If you don’t have it already, download and install OpenCMA
Preparation
Extract the savedata from the TN-V4 loader of your game on your hard drive, in your CMA’s PSAVEDATA/xxxxx folder (where xxxx are a bunch of letters and numbers).
Copy TN.BIN, FLASH0.TN, and 660.PBP in the game’s savedata folder (where you can find ‘H.BIN’)
Copy the game’s savedata to your Vita, using OpenCMA
Running TN-V4
Now run the exploit for the game (the trigger varies on the game. For 101-in-1 megamix, just loading the savedata should be enough) and TN-V should start.
On the first boot, the recovery menu will appear automatically.
Select ‘Advanced ->’ menu and then select ‘Install 6.60 files’ (this step is only needed if you’ve never used TN-V4 before).
Enjoy the install progress.
After the install is done, go back and exit the recovery menu.
Enjoy TN’s awesome work.