There is an issue with your iPhone’s firmware IPSW. This error happens occasionally with any backup device. Please follow the following steps to update IPSW:
- Step 1. Backup your iPhone by iTunes
Please backup your data before setting your iPhone to factory setting.
- Step 2. Restore iPhone to factory setting
- Step 3. Restore your iPhone from backup
Once you’ve updated IPSW, you should be able to use Qubii to backup.
Please note: Updating IPSW will set your iPhone to default setting. Be sure to backup your iPhone data to your computer before formatting.