Apple has pulled iOS 8.0.1 after it emerged that the update was preventing some iPhone features from working correctly.
The update was designed to provide some minor bug fixes, and largely to make sure HealthKit was working correctly.
In reality, the software Apple pushed over actually stopped the TouchID sensor from working, as well as removing cellular data networks, for a large number of users.
A Redditor (hamy89) reported an official response from Apple via online chat that read: "we have identified an issue with the new iOS 8.0.1 release and our engineering team is hard at work to correct this for all of our customers as quickly as possible."
The message continued: "We greatly apologise for the inconvenience and greatly appreciate your patience. As of right now there is not ETA on the fix but we will have one shortly."
Following the (unsurprising) internet furore, Apple offered a fix that would re-install iOS 8.
"We have a workaround for you if you have an iPhone 6 or iPhone 6 Plus and you lost cellular service and TouchID functionality today after updating to iOS 8.0.1," reads the statement.
"We are also preparing iOS 8.0.2 with a fix for the issue, and will release it as soon as it's ready in the next few days."
Unfortunately, re-installing iOS 8.0 means the Health app is not working once again, so it's not short of trading one problem for another.
This fiasco follows an on-going en masse complaint over iPhone 6 Plus handsets reportedly 'bending' or 'warping' for many users under normal usage.