Download iOS 5.1 for iPod touch 4 (iPod4,1)
Signed IPSW files can be restored via iTunes, 3uTools. Unsigned IPSWs cannot currently be restored via iTunes, 3uTools.
Signed status can change daily, you should check signed status before restored
Firmware information
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File name
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VersioniOS 5.1 This firmware is unsigned. You can not restore to it
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Build ID9B176
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Size750.00MB
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Release date
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Upload date2012-02-29 22:42:56
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MD5
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SHA1
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SHA256
iPod touch 4
iPod4,1
* Apple server is official from Apple. Other links are re-upload to other hosts.