Summary
PTF and CTF Formats: Official themes usually used the .ptf format, which changed icons and backgrounds. The "hot" versions enthusiasts wanted were often .ctf files, which required custom firmware to completely overhaul the XMB's layout, sounds, and animations. the walking dead psp theme hot
.ptf themes are 100% safe, .ctf themes require Custom Firmware. Incorrectly modifying your flash0 memory (for "flash" themes) can "brick" your PSP (make it unusable). Stick to .ctf and .ptf formats for safety.00:00:03
00:00:02
00:00:01