This article has been updated to mention Apple’s iOS 8 workaround.

Apple has already pulled back the iOS 8.0.1 update after complaints surfaced about the software tweak causing issues with cellular service and Touch ID.

The update was sent out to address a number of early bugs with iOS 8, primarily critical flaws in HealthKit, the company’s new fitness-tracking application.

“We are actively investigating these reports and will provide information as quickly as we can,” Apple said in a statement published by CNET. “In the meantime, we have pulled back the iOS 8.0.1 update.”

Apple has posted a workaround allowing iPhone 6 and iPhone 6 Plus owners to revert their devices back to iOS 8. It’s promised to release iOS 8.0.2 in the “next few days.”

Apple last week released iOS 8 two days ahead of the release of the iPhone 6 and 6 Plus.

Along with HealthKit problems, and issues arising from the first iOS 8 update, Apple’s latest iteration of its mobile operating system has been causing a higher than normal amount of crashes on user devices. Crittercism this week releases data indicating crashes rates for iOS 8 are 78 percent higher than they were for iOS 7.

In 2013, iOS 7.0.1, an update addressing early bugs with iOS 7, came only one day after the release of the new iOS and one day before the release of the iPhone 5S and 5C.