To resolve the issue with your .380 not working while your 9mm is functioning fine in iTarget Pro, follow these detailed steps:

1. Check Compatibility of the Laser Cartridge: Ensure that the .380 laser cartridge you are using is compatible with your specific firearm. Generally, the iTarget Pro system works well with various calibers, but certain setups may have unique requirements or restrictions - learn more.

2. Inspect the Laser Cartridge: Examine the .380 laser cartridge for any physical damage or defects. Sometimes, wear on the cartridge can prevent it from functioning properly. Ensure the lens is clean, and no debris is obstructing the laser's path.

3. Test the Laser Functionality: Insert the .380 laser cartridge into your firearm and perform a dry-fire test. Ensure you can visibly see the laser dot appear consistently on a target when you pull the trigger. If the laser does not activate, replacing the cartridge may be necessary - learn more.

4. Examine the App Settings: Check the iTarget Pro app settings to ensure that it recognizes the .380 laser cartridge. Sometimes, the app may require specific configuration for different calibers that need adjustment or recalibration.

5. Look into Device Requirements: Verify that your iOS device is functioning correctly and is up to date with the latest iTarget Pro app version. An outdated app can sometimes lead to compatibility issues with newer data or devices - learn more.

6. Consult User Forums or Support: If the issue persists, consider consulting user forums such as the Smith & Wesson Forum to see if others have encountered similar issues with their .380 setups. User experiences can provide insights into specific challenges and solutions - learn more.

7. Contact iTarget Support: Finally, if none of the above steps help, you may directly contact iTarget Pro's customer support for personalized troubleshooting assistance. They can provide specific guidance based on your setup and potential known issues - learn more.

By systematically following these steps, you should be able to identify and potentially resolve the issue with your .380 not functioning in the iTarget Pro system.