OS downgrade or upgrade, or even during some restores. If you experience the error on your i. OS device, heres how you can quickly resolve it so that i. Tunes will function with the restore or i. OS update as intended. This applies to all versions of i. Tunes on both Mac and Windows PC, heres how to resole the error. The fix is the same regardless of what operating system you are using Quit i. Tunes. Locate your hosts file, in Mac OS X this is etchosts and in Windows this is c windowssystem. Open the hosts file with Administrator privileges. Add the following lines to the very bottom of the hosts file and save the change 7. Connect your i. Phone to the computer. Launch i. Tunes. Put the i. Phonei. Padi. Pod into DFU mode by turning the phone off and then holding down the sleep and power button for 1. Tunes tells you that the device is now in recover mode. Use the i. Tunes Restore feature as usual with the i. OS device. You may need to flush your DNS cache for the change to take effect, though usually just quitting and relaunching i. Tunes is sufficient to get the app to recognize the change. Once your i. OS update is finished, go back to the hosts file and remove the 7. Tunes can properly update as usual. This is an essential step otherwise you may encounter future errors when trying to update or install i. OS versions. Note that i. Tunes Error 3. 19. This device isnt eligible for the requested build, which is why its necessary to always use the appropriate firmware files for your device if you are performing manual updates. Or better yet, just let i. Tunes or i. OS update itself without trying to use the firmware files manually. If you need them, you can get the latest versions of i. Phone firmware, i. Pad firmware, and i. Pod touch firmware directly from Apple. Keep in mind that the signing window for downgrading i. OS versions has shrank dramatically, and without a history of storing SHSH blobs there is no way to revert back to prior versions of i. OS once that happens. In that case, no amount of tweaking hosts or adjusting IPs is going to make a difference to restore to older IPSW, and thus you would have to either keep the current i. OS version or opt to upgrade to a newer version to escape the 3. For those who want to know, the IP address being temporarily used and re associating gs. Cydia fame signing server. If youre having trouble figuring out the whole hosts file situation, click here for a walkthrough on the process, demonstrating how to make changes to hosts and how to make those changes take effect if they are not instantly recognized by the OS. Still Getting Error 3. Tunes What now If you still encounter the error, or you find another i. Tunes error, go back into the hosts file and place pound sign in front of the IP addresses in question, thereby preventing their association. This may look something like the following 7. Save the file and try to restore the i. OS device again. Flushing DNS cache is sometimes necessary. Each IP rule with a in front of it becomes voided. You can also delete the IPs and their associated domains, but that isnt entirely necessary. Why does error 3. For most users, the 3. OS device, and in that process of modification the jailbreak tweak modified the hosts file thereby blocking Apples servers. Windows Vista Activation Crack Working Preacher. Initially thats not a problem, but it can trigger the error when i. OS is later attempted to be updated to a new version, restored from a backup, or modified. Most modern jailbreak apps will make the necessary changes to prevent the error from ever being triggered, but that isnt always the case. In more rare occurrences, Error 3. OS upgrade or restore. In those cases, usually attempting again in another minute or two will let the issue sort itself out and things will be working again as usual. Thank you to Parakeet for providing this fix. Updated 142. 01. How to Jailbreak an i. Phone. 1Ensure your i. Phone is compatible with this jailbreak. You can jailbreak i. OS 8. 0 8. 4 using the Tai. G utility, but there is no jailbreak available for i. OS 8. 4. 1. It is not possible to downgrade to i. OS 8. 1. 3 8. 4. Download Tai. G. Click the download button for your operating system and wait for the download to complete. When downloading the Windows version, be sure to download V2. OS 8. 1. 3 8. 4. If youre jailbreaking 8. V1. 2. 1 of Tai. G. Open the Tai. G program. When you launch Tai. G, youll see your device displayed in the main window. It may take a moment for it to appear. Uncheck the 3. K Assistant box. This program is not required for the jailbreak to be successful. Make sure to keep the Cydia box checked, as this is essential jailbreak software. Click Start in the Tai. G window. The jailbreak will begin on your i. Phone. You can monitor the progress in the Tai. G window. Your i. Phone will likely reboot several times during the jailbreak. Launch Cydia on your i. Phone once the jailbreak is complete. Once you see Jailbreak succeeded in the Tai. G window, you should be able to find Cydia on one of your i. Phones Home screens. If you cant find it, swipe down on your screen and search for Cydia. Wait for Cydia to configure and reboot. When you launch Cydia for the first time, it will configure its file system and then reboot your i. Phone. Once the i. Phone has been rebooted, the jailbreak is complete. Avoid future updates. If you update your device to the latest version of i. OS, youll lose your jailbreak as well as your ability to revert to i. OS 8. If you want to keep using your jailbreak, avoid official updates.