MacOS 13.6.4 - USB error 3: Unable to claim interface: Access denied (insufficient permissions)

[elgrandifico1]

Hi,
As I understand it, TomTomWatch can not access the watch because of insufficient permissions.
Does anyone has the same issue on macOS ?

best regards,
Julien

[tigermick]

Hi
I have the same issue on Linux Ubuntu.
I use "sudo" to start the application with root permission.
You can start an application with admin permission on MACOS I think ...

[scubajorgen]

Unfortunatelly I cannot support MacOS simply because I do not have Apple (I once bought a MacBook pro but was so disappointed that I sold it 3 days later; but I won't bother you with that ;-) ).
On Linux you need to have access to the USB (add user to the proper group) and you have to add your device to /etc/udev/rules.d. Add a file here like 50-myusb.rules with next content:

SUBSYSTEMS=="usb", ATTRS{idVendor}=="1390", ATTRS{idProduct}=="7475", GROUP="users", MODE="0666"

Again, this is Linux.

[elgrandifico1]

Unfortunatelly I cannot support MacOS simply because I do not have Apple

Ok, I can understand of course!
I've used my son's PC under Windows and I could access to my watch :-)
Thank you very much !

[axgd-code]

Hi,

I had the exact same issue on macOS Apple Silicon (M3, macOS 15 Sequoia) and managed to fix it using GitHub Copilot agent mode ("VibeCode") in VS Code.

Two things were needed:

1. Build the missing darwin-aarch64 native library

The app crashes before even trying USB access because the native library libusb4java-1.3.0-darwin-aarch64.jar doesn't exist in the official release. You need to build it from source. The upstream build script fails on Apple Silicon due to missing macOS framework linker flags — I've submitted a fix: usb4java/libusb4java#18.

2. Run with sudo

Even after fixing the native library, on macOS you need to run TomTomWatch with administrator privileges so libusb can detach the IOKit kernel driver:

sudo java -jar TomTomWatch.jar

Ready-to-build fork

I've prepared a fork with all these fixes already integrated: https://github.com/axgd-code/TomTomWatch

Just build with mvn package and run with sudo java -jar target/TomTomWatch.jar. Confirmed working on macOS 15 Apple Silicon 🎉