If you’ve just picked up a new iPhone 15 device, before you transfer over your data from an older phone, make sure to update that new phone to iOS 17.0.2 first. An Apple support document says that the update, which came out on Thursday, fixes an issue that “may prevent transferring data directly from another iPhone during setup” (via MacRumors).

Initially, iOS 17.0.2 was only available for the just-launched iPhone 15 phones; the most current software for older iPhones available last week was iOS 17.0.1, which also launched on Thursday and included some big security updates. On September 26th, 9to5Mac reported that Apple released a new build of 17.0.2 with the same release notes available for all iPhones capable of running the current software.

After attempting to start a transfer, your new phone might prompt you to update — at least, that’s what happened to one colleague of mine at The Verge.

The iPhone 15 and iPhone 15 Pro are officially available as of Friday, bringing upgrades like USB-C ports, updated external designs (titanium for the Pro models!), and improved cameras.

Update September 26th, 5:15PM ET: Added note that a new build of iOS 17.0.2 has been released that’s available for older iPhones too.