Where on my pc does iTunes store the backup?
Solution 1:
From Locate backups of your iPhone, iPad, and iPod touch:
iTunes places the backup files in the following places:
Mac:
~/Library/Application Support/MobileSync/Backup/
Windows XP:
\Documents and Settings\(username)\Application Data\Apple Computer\MobileSync\Backup\
Note: To quickly access the Application Data folder, click Start, and choose Run. Type %appdata% and click OK.
Windows Vista, 7, 8, 10:
\Users\(username)\AppData\Roaming\Apple Computer\MobileSync\Backup\
Note: To quickly access the AppData folder, click Start. In the search bar, type %appdata% and press the ↩ Return key.