Garmin has never built a native Apple Silicon version of Garmin Express. That neglect has become critical now that Fenix 9 owners depend on Express as their only recovery path when a mandatory firmware update fails. The release of macOS 27 has made things worse.
Garmin Express is Garmin’s free Mac and Windows software for updating watch software and installing offline maps. Most everyday syncing happens through the Garmin Connect phone app, but Express is still useful for firmware updates, maps and some recovery situations.
Thanks to: @Awesome Maps
The main issue
Apple moved its Macs to its own processors, called Apple Silicon, several years ago.
Garmin Express was originally designed for older Mac processors. It currently relies on Apple’s Rosetta 2 compatibility software to run on Apple Silicon Macs rather than running natively.
Apple is gradually phasing out this compatibility system, so Garmin will need to update Express to support newer Macs directly.
This has led to installation and map-transfer issues for some users. In particular, people setting up Express on a new Mac or reinstalling it after a macOS upgrade have reported installer problems.
Users who already had Express installed before upgrading macOS generally have a smoother experience. macOS can reinstall the required compatibility software, allowing Express to continue running.
Map and update issues
There have also been reports involving the Fenix 9.
Some owners have found that Express connects to the watch but doesn’t display installed maps correctly. New map downloads can also stop during the transfer to the watch.
In some cases, watches have also gotten stuck mid-update. When that happens, Garmin may require a computer connection to recover the device, which makes a working copy of Express especially important.
Some users have found workarounds using third-party software. These tools aren’t provided or supported by Garmin.
Other Garmin users are developing independent Mac software that can transfer maps without relying on Garmin Express.
Garmin’s response
Garmin has acknowledged the issue.
A Garmin representative said on the company’s support forum that Garmin is aware Apple is phasing out the compatibility software Express uses. Garmin said it is developing a version of Express for newer Macs and aims to release it within the year.
No specific release date was provided.
Since that statement, Apple has released macOS 27, and users continue to report installation problems when setting up Express from scratch.
What Mac users should know
If you installed Garmin Express before upgrading macOS, it should generally keep working after macOS reinstalls the required compatibility software.
If you’re installing Garmin Express on a new Mac, or reinstalling it after an upgrade, you may encounter compatibility problems.
Garmin owners who mainly use Express for maps should check the watch itself to make sure the maps have transferred correctly.
If you need to update or recover a watch and Express isn’t working on your Mac, a Windows PC is currently an alternative.
Quick answers
Does Garmin Express work on Apple Silicon Macs?
Yes, through Apple’s Rosetta 2 compatibility software, but Garmin hasn’t released a version built to run natively on Apple Silicon. As a result, a clean install on the newest macOS version can fail.
Why won't Garmin Express install on my Mac?
The installer can fail an Intel processor check when installed fresh on newer macOS versions because Express still depends on translation software Apple is phasing out rather than running natively on Apple Silicon.
What can I do if Garmin Express won't work with my Fenix 9?
Check the watch itself to confirm maps have transferred correctly, and use a Windows PC as a fallback if you need to recover a stuck watch, until Garmin releases a native Apple Silicon version of Express.
Last Updated on 16 September 2026 by the5krunner
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tfk is the founder and author of the5krunner, an independent endurance sports technology publication. With 20 years of hands-on testing of GPS watches and wearables, and competing in triathlons at an international age-group level, tfk provides in-depth expert analysis of fitness technology for serious athletes and endurance sport competitors. ID
