Please HELP!!! my N900 goes dead-loop after installing NITDroid.

I followed everything on the NITDroid forum to install android and multiboot my N900.

After I finish the last step and reboot the N900 with keyboard out, there is only one option "1 - NITdroid on MMCp2 - 2.6.28.NIT.05" on multiboot menu. when I select it the N900 seems reboot and after NOKIA logo and some command lines it simply goes back to the same multiboot menu AGAIN.

I tried go back to Maemo by taking battery out and reboot machine with keyboard CLOSED. however, it goes straight to the multiboot menu...

I also tried reboot machine without memory card but still it goes to multiboot menu...

it looks like I made the configuration of multiboot wrong by typo or something... so is there anyway I can fix it, like bypass multiboot menu?

thank you very much in advance...