Learn how to successfully downgrade any iDevice running ANY iOS. If you experience any problems, please feel free to comment in the comments section below or message me and I'll try my very best to help you fix the issue you're experiencing!
***Although I have only used and tested this method myself on only a few firmwares, many viewers continue to confirm that this method works on even the most recent firmwares. I am not liable if a certain firmware does not work using this method, however all firmware SHOULD work.***
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Windows hosts file location: C:\Windows\System32\drivers\etc\
New line in hosts file: 74.208.105.171 gs.apple.com
...and if that one doesn't work correctly, try this one: 74.208.10.249 gs.apple.com
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Links:
IPSW download links: http://www.felixbruns.de/iPod/firmware/
How to Edit the Hosts file on a Mac: http://decoding.wordpress.com/2009/04/06/how-to-edit-the-hosts-file-in-mac-os-x-leopard/
RecBoot for Windows: http://www.mediafire.com/?xhlteg976vla8mz
RecBoot for Mac: http://www.mediafire.com/?b94mcqvc633491g
iTunes download link: http://www.apple.com/itunes/download/
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Written Instructions:
1) Download the IPSW file of the firmware you're trying to downgrade to.
2) Enter your iDevice into DFU mode and plug it into your computer.
3) Open Notepad as an Administrator and add the line 74.208.105.171 gs.apple.com
4) Save the hosts file.
5) RECOMMENDED: Transfer your Purchases and Back Up, in case of an issue that erases your apps, data, and settings.
6) Go into iTunes, hold Shift down (or Alt or the options key if on a Mac) and click Restore. Find the IPSW file of the firmware you're trying to downgrade to, click open, and confirm the restore.
7) ONLY IF AN ERROR OCCURS: Download, extract, and open the RecBoot application and click Exit Recovery Mode.
8) Downgrade is complete!
9) Remove the 74.208.105.171 gs.apple.com line we had earlier placed in the hosts file if you plan on ever using iTunes to restore or update your firmware again.
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Thank you so much to ComputerHowToGuru for creating the video intro!
http://www.youtube.com/user/ComputerHowToGuru
