After reporting record iPhone 6 and 6 Plus sales, Apple Inc. (NASDAQ:AAPL) has admitted that it is ruining your new devices. The company’s attempt to fix some existing bugs in iOS 8 misfired Wednesday. The Cupertino-based tech giant released iOS 8.0.1 to patch an issue with the Health app. The update allowed the Health app to be installed on the iPhone 6 and 6 Plus.

Apple iOS 8

Apple advises users to downgrade to iOS 8

But the update came with some big surprises for users. The TouchID fingerprint scanner stopped functioning. Cellular service was disrupted. After widespread criticism, Apple pulled back the iOS 8.0.1 update. The company said on Support page of its website that it would release the iOS 8.0.2 in the next few days. Meanwhile, the iPhone maker instructed users to downgrade to the original iOS 8 that was released last week.

The forthcoming update will fix the lost TouchID functionality and cellular service issues. The problems were mostly noticed in the newer iPhone 6 and 6 Plus. The bug wasn’t specific to a particular network or country. It affected the iPhone 6 devices in several countries. As the company continues to work on the iOS 8.0.2, it has released a step-by-step guide to downgrade to iOS 8.

Rollback to iOS 8 will kill the Health app

Once you downgrade the OS, you’ll be able to use TouchID and cellular service. Note that the Health app won’t work after the rollback to iOS 8. Before downgrading, make sure you are using the latest version of iTunes on your Mac or PC. The company advises customers to back up their iPhones in iTunes to a Mac or PC. Apple’s new phone is also suffering from the bending issues.

The iPhone 6 Plus has been criticized for its bendability. Many users reported that the device would bend in their pockets. Some users have also complained about reduced battery life and sluggish WiFi after updating to the iOS 8.

Apple shares plunged 3.49% to $98.21 at 11:16 AM EDT on Thursday.