Daily Tip: How to fix iTunes restore errors by manually editing host files on your Mac
Getting the dreaded "This device isn't eligible for the requested build" error when trying to install an iOS 5 beta, and wondering how to edit your hosts file to get around the problem? Host files can often be used to resolve issues with an iTunes restore, even those that happen due to SHSH saves on jailbroken devices. Follow along for a quick walkthrough, and I'll show you how.
If you're getting an iTunes restore error message, first you'll want to make sure your host file is the problem. As a side note, I am only demonstrating this on a Mac as I don't have a PC but much of the same commands and edits can be done through command prompt on a PC as well.
- Open Terminal
- Type in ping gs.apple.com and hit Enter
- If you see something other than 18.104.22.168: bytes=32 as the reply, you'll need to edit your host file, so continue to the next section.
- If you do see the above, you may want to try forcing your device into DFU mode and then restoring. Or try restoring from a different computer as that seems to work sometimes. Your host file is not causing your restore to fail. Something else is causing it.
If you "do" need to edit your host file, follow the steps below to do so.
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