theblackwind And, I understand - when you want to return the standard official theme.
Well, after all, the background and part of the theme is saved in flash1 and from there it is constantly read. Therefore, if at all you want to get rid of the theme, then you will need to format this area of ​​Flash1, where the PSP configuration is stored. Full format Flash1 can be arranged with 4 buttons. Or climb through the VSH Menu there and manually remove the background and part of the theme. I don’t remember exactly, but it seems like the Theme folder is being created there.
Well, another way is to use the CTF theme, which contains the files from the original firmware, without changes, then, when applying such a theme, the original files will be written to Flash1 and the original design will be returned, even after the plug-in is turned off. There is such a topic "
Original_Sony_Theme_660.ctf ", for example, it is included in the firmware installation via
6.60 PROMOD-C1 Installer or
6.61 AIO Installer .