Nokia N9 - What to do if I get continuously an error in my Nokia N9 while installing an application from Nokia Store?

If you encounter 'unable to complete installation' error during installation, check first that you have the latest phone software installed in your phone (PR1.2). Select Settings > Applications > Manage applications > Updates to check for updates.

If the problem persists or there is no software update available for your phone, you can try the following:

  • Enable the developer mode temporarily in Settings > Security > Developer mode and try the installation again. After the installation you can disable the developer mode.
  • Check if you can install any other applications from Nokia Store (in which case the fault may be in the application you are trying to install).
  • If the problems still continue, you can try to reset the device with Clear device command in Settings > Reset. Note that this will delete all the data from your device, including the media files and map data. Before resetting the device, take a backup and copy your media files (photos, videos, music) with Nokia Link to your PC.