Download M33's custom 3.60 firmware here (scroll down to the bottom of the first post).[via DCEmu, thanks everyone who sent this in!This is designed to remove custom firmware easily and restore a classic 1.5 firmware back to your psp. Version 1.5 firmware does not work on the 'Slim" or later models and will 'brick' them.This means that some homebrew that was developed specifically for 1.50 (e.g.homebrew games that would go into the GAME150 folder) will not work with the custom firmware.Do you really want to go back to official firmware?There are really no downsides to custom firmware..it doesn't really matter to me which firmware i'm on i just want the psp to work.The installation is complex, requiring a Pandora Battery and Pandora memory stick, a non-Slim PSP with firmware 1.50 or custom firmware that supports 1.50 kernel, and of course, a PSP-2000.
F8660_fbz_button[type="button"]:active, .ezoic-wrapper . Most PSP Slims cannot be downgraded with out a Pandora's Battery (Pandora Battery Co.com).The easiest and simplest way to run homebrew is by running official firmware 1.5. The PSP Slim can now run M33's 3.60 custom firmware.The new firmware has "all the features of 3.52 M33, except the 1.50 kernel support".These updates add new features, but they can also install authentication and security features which make playing older games or installing hacks like Homebrew impossible.