I need some help here. My psp (v4.01 M33-2) wont boot up. But if i took out the memory stick, it can boot up perfectly. I just done upgrade from V3.90M33-3 to the latest M33 firmware. I can get into the M33 Recovery Menu but the psp wont boot up to XMB. Anyway, here's the info on the Recovery menu, i hope someone can help me about the settings here.

Configuration
skip sony logo -> disable
hide corrupt icons -> disable
game folder homebrew -> currently 4.XX kernel
autorun program at /PSP/GAME/BOOT/EBOOT.PBP -> disable
UMD Mode -> normal umd required
fake region -> disabled
use vshmenu -> enable
xmb usb device -> mem stick
charge batt when usb cable plugged -> disable
use m33 network update -> enabled
hide pic0.png & pic1.png in game menu -> disable

I hope someone out there can help me with my settings.

I tried that but still cant fix. I format my mem stick, then it turn normal again. Anyway, thanks for your help ikan_semilang

Its ok. After formatting my memory stick, i can boot normally. Thanks for your effort anyway. Btw, anyone know where can i find custom theme for firmware v4.01 M33-2?