hi,I written the details of this issue in the comment below.

Tested the suggested workaround. Our firmware no longer gates on Host Version 0.0. After visionOS writes 00 00 01 79, TimeSync reaches READY, IMU remains stable at ~398.9 Hz with no errors or drops, and mode-2 LED reports continue (count >769, late=0, queue_overflow=0). However, Apple's Generic Spatial Accessories sample still shows authorization=allowed, Provider State unavailable, Is Tracked=false, and no AccessoryAnchor.

hello，Tested the suggested workaround. Our firmware no longer gates on Host Version 0.0. After visionOS writes 00 00 01 79, TimeSync reaches READY, IMU remains stable at ~398.9 Hz with no errors or drops, and mode-2 LED reports continue (count >769, late=0, queue_overflow=0). However, Apple's Generic Spatial Accessories sample still shows authorization=allowed, Provider State unavailable, Is Tracked=false, and no AccessoryAnchor.

hello，Tested the suggested workaround. Our firmware no longer gates on Host Version 0.0. After visionOS writes 00 00 01 79, TimeSync reaches READY, IMU remains stable at ~398.9 Hz with no errors or drops, and mode-2 LED reports continue (count >769, late=0, queue_overflow=0). However, Apple's Generic Spatial Accessories sample still shows authorization=allowed, Provider State unavailable, Is Tracked=false, and no AccessoryAnchor.

Tested the suggested workaround. Our firmware no longer gates on Host Version 0.0. After visionOS writes 00 00 01 79, TimeSync reaches READY, IMU remains stable at ~398.9 Hz with no errors or drops, and mode-2 LED reports continue (count >769, late=0, queue_overflow=0). However, Apple's Generic Spatial Accessories sample still shows authorization=allowed, Provider State unavailable, Is Tracked=false, and no AccessoryAnchor.

Hi, thank you very much for the detailed guidance. Your suggestions helped me isolate a separate blocker before the optical constellation matching stage. While retesting with Apple’s “Working with generic spatial accessories” sample, I encountered an ASA version-negotiation issue similar to the one reported here: https://developer.apple.com/forums/thread/838291