OTA Updates/iPod touch/5.1

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iPod touch (3rd generation)

Version Build Prerequisite Version Prerequisite Build Release Date Release Type OTA Download URL File Size
5.1 9B169 5.0 9A334 7 Feb 2012 N/A f14cd8f13e65a026f4caa749061f2bd364ffd3ce.zip 110,922,788
5.0.1 9A405 N/A 28e2bc62cec0d0f383e74131a3e273f6d093ba6e.zip 110,780,760
9B172 5.0 9A334 13 Feb 2012[1] N/A 1249a3c776789f818ec47c5dfeb7d0f6685d45ac.zip 110,986,288
5.0.1 9A405 N/A 766e18054d6be2a8b3b63e2b3957c8b2f24c4697.zip 110,696,283
9B174 5.0 9A334 13 Feb 2012 N/A cdd15e750a70de846445fe3cdb97ac965547a728.zip 110,983,245
5.0.1 9A405 N/A 0daa167da674f37888e17e9511e83199a27335a3.zip 110,822,843
9B176 5.0 9A334 7 Mar 2012 N/A 0a49ee919215f6a8cabccf4c34c2df848d85025f.zip 111,015,655
5.0.1 9A405 N/A 470a2df0e401405c9bdc52e627172193fe38750f.zip 110,901,484

iPod touch (4th generation)

Version Build Prerequisite Version Prerequisite Build Release Date Release Type OTA Download URL File Size
5.1 9B169 5.0 9A334 7 Feb 2012 N/A b36452039935c15be02b837c1f1bb16cf0e52211.zip 183,689,952
5.0.1 9A405 N/A 2f121c1d804e3ef67c0d616d5f89b9cc1d81ea7f.zip 183,491,885
9B172 5.0 9A334 13 Feb 2012[1] N/A 304546b98592028756b9d976ead21c73e05ed92a.zip 183,585,451
5.0.1 9A405 N/A 40eabfb4a75f2b9e3a1f2d12788d26ed2ce3b9c1.zip 183,396,971
9B174 5.0 9A334 13 Feb 2012 N/A 4871de932099fa5c44bdd60660affbda3518be7c.zip 183,576,223
5.0.1 9A405 N/A e73796038caf38e18e342f9f1444e685d91a428a.zip 183,347,405
9B176 5.0 9A334 7 Mar 2012 N/A 8af6942d8211bb00fb32b93aafeeba1c4b8e1e32.zip 183,616,163
5.0.1 9A405 N/A 62866fb35adf18d8a0ffbdf0fa340b95297c90d3.zip 183,366,472

Notes

  1. ^ a b This release was never actually published; it was discovered from a technical leak.