I've find how to change your native language in RunUMD & MPHloader.
1 - Download Fileassistant++
( Note for 4Gb Datel users : You must find a modified eboot to work !! )
2 - Use Fileassistant++ to copy your own Flash1\Registry\system.dreg and Flash1\Registry\system.ireg to your memorystick.
3 - Now Copy system files to :
- [PSP_drive]\MPHGameLoader\Flash1\registry\ ( For MPHloader )
- [PSP_drive]\x\flash1\registry\ ( For RunUMD )
Note: You can use system config from your own Firmware 1.5 !
With this you keep your : - Wifi setting
- Button setting ( X or O to confirm )
- Language setting
Skunk25