General advice regarding themes/wallpaper, etc. sought
I'm not a noob to everything, but I have never added wallpaper or a theme to my psp. I have had CFW for a long time. I had a virgin 1.50 for years and then took the plunge to 3.10 OE in order to play my PS1 games. I recently upgraded to 3.52 M33-4. I am very happy with it b/c I can now play all of my PS1 games. (Ghost in the Shell, Front Mission 3 and Brave Fencer Musashi all work now). I also have tons of emulators and homebrew games running so I am familiar with how to set things up.
I am now thinking of branching out and adding a custom theme or wallpaper. I have always been very hesitant to do anything that might cause a brick or throw things off.
How big of a deal is it to add a wallpaper from an image on the memory stick? Does this flash the PSP?
If I want to do a whole theme, I know that I use one that is compatible with my firmware, but is there a way to do it without flashing? Is it possible to use XMB Theme Manager on 3.52 M33? Will that use the flash?
I appreciate any help/advice that anyone can offer. Thanks in advance.