You can make the CFW , meaning it will stay installed even if you turn the PSP off completely.
The Ultimate Guide to PSP 6.61 Custom Firmware (CFW) Installing Custom Firmware (CFW) on your PlayStation Portable (PSP) is the best way to unlock its full potential. Whether you want to run homebrew apps, play backups (ISOs/CSOs), or use emulators for retro gaming, version 6.61 is the definitive stable environment for all PSP models (1000, 2000, 3000, and Street/E1000). Why Choose 6.61 CFW? Maximum Compatibility psp 6.61 custom firmware
Modifying your system software carries a small risk. While this method is generally very safe, proceed at your own risk. Ensure your battery is charged above 50% before starting. You can make the CFW , meaning it