Does SAF (Storage Access Framework) support for FireTV

I’m testing Storage Access Framework (SAF) on Fire TV:

  • On Fire OS 7 → SAF works, I can select USB/external storage normally

  • On Fire OS 8 → SAF picker does not show and app has crashed

Is SAF fully supported on Fire OS 8 or any above OS?
Are there any restrictions (scoped storage, permissions, or Fire TV limitations) that prevent accessing external storage via SAF?

Any workaround to allow exporting data to USB/NAS on Fire OS 8 and above if SAF not supported?