iPod touch (3rd generation)[edit]
| Version | Build | Prerequisite Version | Prerequisite Build | Release Date | OTA Download URL | File Size |
|---|---|---|---|---|---|---|
| 5.1 beta 3 | 9B5141a | 5.1 beta 2 | 9B5127c | 9 January 2012 | 6997c9f76060dde8071a3c02d07359dd2d702009.zip | 63,554,861 |
iPod touch (4th generation)[edit]
| Version | Build | Prerequisite Version | Prerequisite Build | Release Date | OTA Download URL | File Size |
|---|---|---|---|---|---|---|
| 5.1 beta 3 | 9B5141a | 5.1 beta 2 | 9B5127c | 9 January 2012 | e718832f57845f146010545386f1949a1353999b.zip | 66,859,676 |