on GitHub for a technical deep dive into interacting with Jieli chips via command line. Refer to the Studiomaster Professional Manual
provides technical specs for the update tool used to program BR21 and similar chips. For firmware insights, the JieLi-AC690X GitHub Repository
: For advanced users or developers, Jieli's official GitHub hosts SDKs and bootloaders for their various series (AC63, AC69, etc.), which power BR21-class hardware. Troubleshooting Tips