Can't boot after following MER install instructions
 

I was following these instructions http://wiki.maemo.org/Mer/Documentat...n#N8x0_Install to install MER on my N800. The device reboots after bootmenu instalation.

Now my n800 doesn't boot, I turn it on and all I get is nokia's logo. No boot menu, no progress bar...
The screen blink sometimes and then it's back to nokia's.

What have I done wrong? How can I restore my device?

I still want to install MER :)