hosts various SDKs and firmware update protocols for their chipsets, including the AC63 and AC69 series often associated with the BR21 family. Gitee (Technical Docs) : For compiler tools and updater programs, Jieli uses Gitee repositories to distribute build environments. Update Tools : Manuals for the Jieli USB Dongle 4.0 Update Tool
Jieli USB Driver Download – from official chip vendor (Source: jielicol.com – actual chip manufacturer) jieli br21 driver link
For hobbyists and makers, once the driver is installed, your PC will assign a COM port (e.g., COM3). You can use a serial terminal (like PuTTY or Arduino IDE Serial Monitor) to send directly to the BR21. hosts various SDKs and firmware update protocols for
Are you trying to with a Bluetooth dongle, or are you looking to reprogram/flash the chip? christian-kramer/JieLi-AC690X-Familiarization - GitHub You can use a serial terminal (like PuTTY