Article: Lack of storage space can often prevent Blackberry Desktop Software from successfully updating your device software. Try deleting text messages, third-party applications, Internet browsing history, and other data you no longer need to free up memory on your device. if updating your device results in software malfunction. In some cases, a corrupted update or an update that fails to complete can cause software problems, but performing a reset can help restore your Blackberry to a working state. In some cases, faulty hardware can interfere with your being able to update your Blackberry.

What is a summary?
Delete data on your Blackberry to free up memory if the software update fails to complete. Try resetting your Blackberry Try using another USB cable or USB port on your computer if your computer or Blackberry Desktop Software fail to recognize your Blackberry Curve.