Craig Federighi, Apple senior vice president of Software Engineering, speaks about iOS 9 during Apple WWDC on June 8, 2015 in San Francisco, California / Getty Images

The small update also brings fixes that could mean alarms wouldn't go off

Apple has released its first update since the release of iOS 9, fixing an issue that stopped some people getting hold of the major new release.

Apple released iOS 9 last week, bringing with it new features including a cleverer search and virtual assistant that is built to recognise what users want to do before they do it. But some people couldn’t get onto the new update, because of a “Slide to Upgrade” bug that left phones hanging during the attempted install.

The new update fixes that issue, and should mean that people are able to download the new update without any major problems.

As well as the Slide to Upgrade bug, the new update fixes a problem that meant alarms might not actually sound, stops problems with videos in Safari and Photos that distorted paused frames and fixes and fixes an issue that brought connectivity problems for those on a specific internet setup.

It’s not clear how many people were affected by the Slide to Upgrade bug. Apple has said that most iPhones have already upgraded to the new operating system — but some may have done so by using a workaround that allows phones to be reset if hit by the problem.

In the event that the issues occur, Apple has a special page for how to get around it. New phones shouldn’t be hit by the issue, since they’ll go straight through to the iOS 9.0.1 update process.

iOS 9.0.1 can be downloaded in the same way as previous updates.

Heading to the Settings app, clicking general and selecting Software update will start the process on the phone, which will then automatically download and install it. Otherwise, Apple is likely to send out a notification in a few days, reminding people to update.

The update is 35MB, so shouldn’t take long to download on a connection with any reasonable speed.

Apple has already released the next major update of iOS to developers and those on its beta programme, which allows people to test out early versions of the software. That brings with it new emoji — including a middle finger — and settings to help Hey Siri get better at recognising its owner’s voice.

Apple often sends out minor updates shortly after its major ones, correcting bugs and other issues that have been found since the release was pushed out to the public.