Upgrading PSP from 3.52 to 5.55 Custom Firmware: Guide and Risks
You cannot officially update from 3.52 to 5.55. Sony's last official firmware is 6.61. 5.55 is a Custom Firmware (CFW) requiring a specific installation process.
Steps to Install 5.55 CFW (General Outline)
BACK UP: Save games, photos, music to PC/PS3.
Understand risks: Voids warranty; can brick (permanently break) your PSP if done wrong. Proceed at own risk.
Find a reputable guide: Search "PSP 3.52 to 5.55 CFW guide" + your model (1000/2000/3000/Go). Use trusted sites (wololo.net, PSX-Place, GitHub repos).
Download files: CFW installer (e.g., PRO-C2, ME/LME), possibly a kernel exploit (like 6.61 Infinity for permanent patch).
Install: Usually: copy files to Memory Stick → run installer from Game menu → follow prompts.
Benefits of 5.55 CFW
Homebrew games/apps (emulators, media players, utilities).
Custom themes/backgrounds.
ISO/CSO loading (play UMD backups from Memory Stick—only for games you own).
Plugins (cheats, screenshots, remapping).
Performance tweaks.
If unsure, seek help from experienced modders on forums. Don't rush.
