Why can't I restore backup on my iPhone?

Related questions

1. Can you recover an erased iPhone?
2. Will setup as new iPhone erase everything?
3. Can you unlock your iPhone if you forgot the password?
4. Will resetting iPhone delete anything?
5. How do I reset my iPhone without losing everything?
6. Can I undo an iPhone restore?
7. Does rebooting iPhone delete everything?
8. Can you reset a locked iPhone?
9. Do you lose pictures if you restore iPhone?
10. How do I restore my iPhone without losing my pictures?

Tags

1. #backup
2. #might
3. #incompatible
4. #error
5. #because
6. #corrupt
7. #updated
8. #still
9. #itunes
10. #device
11. #software
12. #restore
13. #update