OTA Update 9.9.11.2.1 (build 15C153) is an official Apple over-the-air update for the iPod touch 6, released on 2017-12-13T18:15:19Z. The update package is 1.36 GB. This is a delta (partial) update that requires 8.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e5c6290f5be6ffc2f799c2b5e6aacd850432af1c.zip.