I am giving you full instruction, Which will not need mmc: 1. Install root (apps manager ) 2.Install leafpad (apps manager) 3.Download gingerbread for your n900 (google) Plz don't do any mess with x-terminal Now, Open x-terminal type: root apt-get update apt-get install nitdroid-installer then it ask to type "Yes" Open new x-terminal type root cd /home/user/MyDocs/ bzip2 -d gingerbread.tar.bz2 (wait for some time) cd / mkdir /and cd / mount /home /and cd /and tar xvf /home/user/MyDocs/gingerbread.tar dpkg -i /home/user/MyDocs/NITDroid-kernel-Mido.Fayad.deb (you have to download this file) open new x-termnal leafpad /etc/multiboot.d/1 (then press tab on your screen) The its done don't forget to press thamks button