原帖由： Chris Green ,
It's running custom firmware, so you're in luck. I'm not too familiar with the slims, but you need to download the stock 6.35 update, and boot your PSP into recovery mode. Do this by turning it off, and turning it back on while holding down the right bumper. A menu should come up on the screen. Select "Toggle USB" and connect it to your computer. Now, rename the 6.35 Update that you downloaded "EBOOT.PBP" (if it isn't already named that), and copy it to "/PSP/GAME/RECOVERY/" directory on your PSP's memory stick. Now on the recovery menu, select "Run program at /PSP/GAME/RECOVERY/EBOOT.PBP" Your PSP should procede to reinstall stock 6.35 Firmware. Once the firmware installs, reboot the PSP. It should now be working on stock 6.35 firmware. You can now go back, and reinstall your custom firmware.