iOS 14.8.1 (build 18H107) is an official Apple over-the-air update for the iPhone X (GSM), released on 2021-10-26T17:00:00Z. The update package is 166.16 MB. This is a delta (partial) update that requires 14.8 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: bd54797f5d5bffb05b5bcdde7fcf0c425134df5b.zip.