| 1 | An upgrade is in progress. The system supports only one upgrade at a time. |
| 2 | The image is corrupt. This typically occurs because of a bad image or errors during upload to the device. |
| 3 | The encryption signature is invalid. This typically occurs if the image is corrupt or compromised. |
| 4 | The image is missing an upgrade script. After the image has been successfully uploaded, the system runs an upgrade script for final processing. This error indicates a failure in that script. |
| 5 | The manifest is corrupt or missing. |
| 6 | The serial number is invalid. |
| 7 | The build date is invalid. |
| 8 | The software image is for a different system type. |
| 9 | Unable to downgrade to the image version. |
| 10 | The upgrade license expired. A current license key for upgrading the system software does not exist on the device. Contact your Lifesize Partner to renew your maintenance agreement. |
| 11 | You cannot upgrade while calls are connected. |
| 12 | A restore to defaults is required. The upgrade requires a reset. Navigate to Maintenance > System Reset and reset the system to its default state before proceeding with the upgrade. |
| 13 | A system error occurred. |
| 16 | Insufficient space to store the image. |
| 17 | Failed to verify the image. |
| 18 | The license server is unreachable. |
| 19 | Failed to download the upgrade image. |