I downloaded a few java games onto my computer and copied them via the usb cable to the root directory of my n-gage, but I cannot install them. I currently use the 32MB MMC card that came with my n-gage. Also when I copied these files to my n-gage, the nokiagame does not work anymore and I receive a system fault. What can I do to solve this ?
install games and applications on ngage
Put the .jar (or .sis files, if native Symbian installation files) in the top/root of the MMC. Then, if you can't use "Manager" (Application Manager) to launch the installation, use FExplorer (http://www.gosymbian.com/) to navigate to the the files (on the E-drive) and launch the installation from there.
As to the Nokia Game problem. Reinstall it. You probably copied over something that you shouldn't have, or deleted something you shouldn't have.