iPadOS 9.1 (build 13B5119e) is an official Apple over-the-air update for the iPad 2 (GSM), released on 2015-09-23T17:55:02Z. The update package is 993.38 MB. This is a delta (partial) update that requires null already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: adc2e0203da5e8a07bc1bdd449f4e2222aa1045e.zip.