AmigaOS 4.1 installation process freezes (solved/manual ins. + bug/problem)

I got my copy of 4.1 today. It loads Kickstart from CD and then opens "AmigaOS 4.1" boot screen (booting from CD of course). After that nothing happens no matter how long I wait. Keyboard reset doesn't work either. So I assume its totally frozen. Are there any other methods to install this to my HD f.ex. is manual installation possible. I have SE mobo so I'll guess it might be related to USB (no any USB stuff connected to my machine) or one possibility is it's my LiteOn DVD drive. So what to do next ?

I have serial port output log. Should I paste it here or somewhere else ? There's not any crashes reported.

(There's this strange thing in serial output "Flash 0 kB". But I'll get this also when booting 4.0 from the HD succesfully.)

@TSK

I solved the problem doing manual installation copying all files manually to existing OS4.0 partition. At first I forgot to comment all usb and a1ide related lines in kicklayout and machine froze like when booting from the 4.1 installation CD. Then I booted with 4.0 installation CD and commented those usb and a1ide related lines in kicklayout and now after doing so 4.1 boots and works fine.

(I had USB disabled in Uboot settings but enabling them didn't change anything. I tested this before doing manual installation.)