V2.1 Documentation and API Change Notes

This document applies only to A2 Ultra software version 2.1.x.

AI Support

To help quickly answer AimDK-related questions, this platform provides an AI SDK support service free of charge at: https://aimdk-support.agibot.com/

V2.1 Documentation Updates

Date	Update Details	Latest AimDK Package Name
2026-06-03	Released the A2 Ultra Development Guide (v2.1) Added APIs for requesting audio focus, abandoning audio focus, and streaming audio playback Added some APIs for deployment mode	AimDK-A2-Ultra-V2.1-0603

V2.1 API Change Notes

The update log lists API changes introduced after V2.1, as well as other modifications that may significantly affect secondary development. Incompatible changes are highlighted in bold.

1. Microphone Management
   • Fixed an issue where the noise-reduction microphone audio topic API output an incorrect state when using an external microphone