Screen Rotation for a N810 running Diablo

• Make sure you know what you are doing!
• Update to the latest firmware
• Enable Extras.
• Get root access.
• Open X-Term.
• Become root.
• Connect your device to the power supply.
• Type: wget http://outpo.st/rotate/kernel-diablo-flasher_2.6.21-200842maemo1rotationfast_all.deb http://outpo.st/rotate/osso-software-version-rx44-unlocked_1%3a5.2008.43-7_all.deb http://outpo.st/rotate/xserver-xomap_1.3.99.0~git20070321-0osso20083801rotation_armel.deb
• Type: apt-get install advanced-backlight
• Type: dpkg -i kernel-diablo-flasher_2.6.21-200842maemo1rotationfast_all.deb osso-software-version-rx44-unlocked_1%3a5.2008.43-7_all.deb xserver-xomap_1.3.99.0~git20070321-0osso20083801rotation_armel.deb
• When finished, reboot.

REF:http://wiki.maemo.org/Rotation