An Unknown Error Occurred 21 Ios 5
Contents |
not post a blank message. Please type your message and try again. _Alama_ Level 1 (0 points) Q: Can "unknown error 21" be fixed ?? (iphone 4) Recently my iPhone an unknown error occurred (21) iphone 5 4 just reset itself out of nowhere and wouldn't turn back on.
An Unknown Error Occurred 21 Itunes
I placed it on a dock & the connect to itunes screen showed up. I plugged it into my an unknown error occurred 21 the iphone could not be restored computer and when it began to restore it stopped and the unknown error 21 window popped up. This has occured on 3 different computers & now I'm unsure how to
An Unknown Error Occurred (21) Iphone 4
handle this. -Please help. iPhone 4, iOS 6 Posted on Jun 20, 2013 1:54 PM I have this question too Close Q: Can "unknown error 21" be fixed ?? (iphone 4) All replies Helpful answers Page 1 Next by KiltedTim, KiltedTim Jun 20, 2013 1:59 PM in response to _Alama_ Level 9 (55,712 points) Mac OS X Jun 20, 2013 1:59 the ipad could not be restored an unknown error occurred 21 PM in response to _Alama_ http://support.apple.com/kb/ts3694#error21Error 20, 21, 23, 26, 28, 29, 34, 36, 37, 40These errors typically occur when security software interferes with the restore and update process. FollowTroubleshooting security software issues to resolve this issue. In rare cases, these errors may be a hardware issue. If the errors persist on another computer, the device may need service.Also, check your hosts file to verify that it's not blocking iTunes from communicating with the update server. See iTunes: Advanced iTunes Store troubleshooting--follow steps under the heading Blocked by configuration (Mac OS X / Windows) > Rebuild network information > Mac OS X > The hosts file may also be blocking the iTunes Store. If you have software used to perform unauthorized modifications to the iOS device, uninstall this software prior to editing the hosts file to prevent that software from automatically modifying the hosts file again on restart. Helpful (0) Reply options Link to this post by simonege, simonege Sep 3, 2013 7:03 AM in response to _Alama_ Level 1 (0 points) Sep 3, 2013 7:03 AM in response to _Alama_ Did
Error 21 If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you http://www.mac-forums.com/showthread.php?t=275081 can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. Welcome to Mac-Forums! Join us to http://www.survivalguide4idiots.com/fix-iphone-restore-error-21-how-to.html comment and to customize your site experience! Members have access to different forum appearance options, and many more functions. Results 1 to 8 of 8 Thread: iphone restore impossible. Error 21 an unknown Tweet Thread Tools Show Printable Version Subscribe to this Thread… 05-17-2012,05:08 PM #1 dimlocator View Profile View Forum Posts Member Since May 05, 2008 Posts 6 iphone restore impossible. Error 21 I tried to update the software on my iphone 4S today. It stopped working, & now won't even restore - I get "the iphone could not be restored. An unknown error occurred an unknown error (21)' It's a completely unhacked/jailbroken iphone, & I have the latest version of itunes (10.6.1), & run the latest OS X (10.7.4). A bit of googling suggests that it might be firewalls or some such might be blocking the connection, but I don't have one of these. Any ideas? Reply With Quote 05-17-2012,06:53 PM #2 Ttaylor394 View Profile View Forum Posts Member Since Feb 15, 2011 Location West Virginia Posts 384 Specs:13in rMBP 2014 Yosemite what does iTunes say when you plug it into the computer? does it say anything? Reply With Quote 05-18-2012,01:12 AM #3 Jro View Profile View Forum Posts Member Since May 17, 2012 Posts 13 Originally Posted by Ttaylor394 what does iTunes say when you plug it into the computer? does it say anything? the iphone could not be restored. An unknown error occurred (21) Try putting the phone into DFU mode and see if you can restore it. Reply With Quote 05-18-2012,02:25 AM #4 dimlocator View Profile View Forum Posts Member Since May 05, 2008 Posts 6 Still getting error 21 I've tried using DFU mode several times, but k
I had jailbroken and unlocked one of my iPhones. To prepare for WWDC 2012 starting next week, I decided to restore my iPhone to be in the good books of Apple and not having to carry around a jailbroken iPhone. However, when I tried to upgrade my iPhone to the latest version of iOS 5.1.1, I was greeted with error 21. Error 21 goes like this " The iPhone could not be restored. An unknown error occurred (21)." Go to Apple Support forum to look for a resolution of error 21 and you'd probably find one of the most generic and useless information out there. Have a look yourself here. If you're also facing error 21, in all likelyhood, the phone was either jailbroken or physically damaged. In the latter case, you can get a replacement from Apple. US$149 for a 3Gs or 4 (or 3G, but that wouldn't be worth it at this point), US$199 for a 4S. If it was jailbroken, they won't touch it. So, what do you do? Don't worry, we're here! Some of the scenarios in which "An unknown error occurred (21)" shows up: Upgrading to a newer version of iOS on your iPhone Restoring your iPhone There are 2 easy solutions to resolve error 21. Use either one, which best suits you. You will find plenty of solutions on the internet, do not try one which seems risky, else your iPhone will turn into a brick in no time! How to Fix iPhone Restore Error 21 - Option # 1 Easiest option is to upgrade or restore using a computer, which you've not used before or belongs to someone else. Bottom line is that you need to use a computer (Mac or PC) other than the one, which gave you error 21. If you have only one computer, you will have to edit your host file (option # 2) because it has an entry, which is preventing upgrade or restore of your iPhone and resulting in error 21. How to Fix iPhone Restore Error 21 - Option # 2 If you do not want or have another computer to resolve iTunes error 21, you can edit your host file. Windows users - Navigate to C:WindowsSystem32dr