watchOS 6.1 (build 17S5068e) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-10-10T17:09:03Z. The update package is 270.86 MB. This is a delta (partial) update that requires 6.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2159c522bfcaa28fcc9278d664104291b5742cdb.zip.