Software Update Failed 1421. IPhone 12 DEP iOS 1421 fails to download - Microsoft Tech Community. The iOS 1421 software update is available now to all eligible iPhone 12 iPhone 12 Pro iPhone 12 Pro Max and iPhone 12 Mini.
Once the process has been completed you can restore it from your backup to get back all your data and files. It seems users that the iOS 1421 update has landed at least one users device into a bootloop. I am not the only one with this issue.
This update will fix issues with the database upgrade that failed for 1420 users.
IPhone 12 series users can update their smartphones by going into Settings Software Update in order to bring their iPhone 12 device up to date. It was not addressing the absent text alertnotifications bug of not knowing you have a new text. Hold the Shift key in Windows or AltOption key on Mac and click the Restore iPhone button. The new iOS 1421 for HomePods weighs in at just 338MB and is showing up now when you pull up Apples smart speaker settings in the Home app.