Hi Shuairan, Don't be surprised if it works without changes, I've been spending many many days of work making the necessary changes for that!! And believe me it was really not so simple.. There is still a lot of work to do before having a properly working version, and with a reasonable speed. I didn't wanted to make this information public so early, but no that you found it by yourself.. I own myself a N900 and plan to make a proper complete version within the next months. It will of course include GPS, accelerometers as well as improved GUI. Contact me if you want to help coding on that. Cheers, Fabien (Stellarium's project lead)