A week after releasing iOS 8, Apple on Wednesday dropped it first update for the new mobile operating system.

But you might want to hold off downloading it for now, because the software appears to have some major issues. A number of users are reporting that the update, iOS 8.0.1, has disabled their cellular reception and Touch ID.

Apple did not immediately respond to a request for comment about the issue. Affected individuals are seeing a dreaded "No Service" banner after downloading the update, and powering the phone off and on isn't correcting the issue.

According to Apple's release notes, the update contains a number of improvements and bug fixes for third-party keyboards, Photo Library, and other apps and features. There's also a fix for a problem that caused third-party keyboards to become deselected when you enter your passcode.

There's also a fix for a HealthKit bug that delayed the iOS 8 launch of some third-party apps, and an issue that prevented some apps from accessing photos in the Photo Library. The update also improves the reliability of the Reachability feature on the iPhone 6 and 6 Plus and offers better support of Ask To Buy for Family Sharing for in-app purchases.

It also corrects other issues that could have caused unexpected cellular data usage when receiving SMS/MMS messages, prevented the uploading of photos and videos from Safari, and prevented ringtones from being restored from iCloud backups.

PC Magazine