WHILE KEEP TRYING TO RESTORE MY IPHONE 4 IT KEEPS SAYING ERROR 21 AFTER ITUNES EXTRACTS SOFTWARE TUNRS OFF AND ON BACK SHOWS APPLE LOGO THAN GOES BACK TO THE ITUNES SCREEN WITH THE CHARGER LOGO, WHAT CAN I DO? ANY BODY KNOW? PLEASE LET ME KNOW, THANKS. NOT SURE OF THE OPERATING SYSTEM BUT THINK IT IS IOS 7.1 OR 7..0.6
iPhone 4, iOS 7.1, ERROR 21 ON IPHONE
From TS3694 Resolve Specific iTunes update and restore errors:
Check for hardware issues
Related errors: 1, 3, 10-47, 1002, 1011, 1012, 1014, 1000-1020, 1669.
Try to restore your iOS device two more times while connected with a cable, computer, and network you know are good. Also, confirm your security software and settings are allowing communication between your device and update servers. If you still see the error message when you update or restore, contact Apple support.
It worked for one:
Close iTunes........move hosts file to desktop............try Restoring in iTunes. Put back Hosts file back to its location once restored.
error 21 comes up while trying to restore iphone 4?
